node-av / constants / EncoderOptionsMap
Interface: EncoderOptionsMap
Defined in: src/constants/options.ts:349
Properties
aac
aac:
object
Defined in: src/constants/options.ts:354
AAC (Advanced Audio Coding)
aac_coder?
optionalaac_coder?:"fast"|"twoloop"
Coding algorithm
aac_is?
optionalaac_is?:boolean
Intensity stereo coding
aac_ms?
optionalaac_ms?:boolean
Force M/S stereo coding
aac_pce?
optionalaac_pce?:boolean
Forces the use of PCEs
aac_pns?
optionalaac_pns?:boolean
Perceptual noise substitution
aac_tns?
optionalaac_tns?:boolean
Temporal noise shaping
See
https://ffmpeg.org/ffmpeg-codecs.html#aac
alac
alac:
object
Defined in: src/constants/options.ts:372
ALAC (Apple Lossless Audio Codec)
max_prediction_order?
optionalmax_prediction_order?:number
min_prediction_order?
optionalmin_prediction_order?:number
See
https://ffmpeg.org/ffmpeg-codecs.html#alac
amv
amv:
object
Defined in: src/constants/options.ts:380
AMV Video
border_mask?
optionalborder_mask?:number
increase the quantizer for macroblocks close to borders
chroma_elim_threshold?
optionalchroma_elim_threshold?:number
single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)
error_rate?
optionalerror_rate?:number
Simulate errors in the bitstream to test error concealment.
lmax?
optionallmax?:number
maximum Lagrange factor (VBR)
lmin?
optionallmin?:number
minimum Lagrange factor (VBR)
luma_elim_threshold?
optionalluma_elim_threshold?:number
single coefficient elimination threshold for luminance (negative values also consider dc coefficient)
mpv_flags?
optionalmpv_flags?:string&object|"skip_rd"|"strict_gop"|"qp_rd"|"cbp_rd"|"naq"
Flags common for all mpegvideo-based encoders.
noise_reduction?
optionalnoise_reduction?:number
Noise reduction
ps?
optionalps?:number
RTP payload size in bytes
qsquish?
optionalqsquish?:number
how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function)
quantizer_noise_shaping?
optionalquantizer_noise_shaping?:number
rc_buf_aggressivity?
optionalrc_buf_aggressivity?:number
currently useless
rc_eq?
optionalrc_eq?:string
Set rate control equation. When computing the expression, besides the standard functions
rc_init_cplx?
optionalrc_init_cplx?:number
initial complexity for 1-pass encoding
rc_qmod_amp?
optionalrc_qmod_amp?:number
experimental quantizer modulation
rc_qmod_freq?
optionalrc_qmod_freq?:number
experimental quantizer modulation
skip_cmp?
optionalskip_cmp?:"psnr"|"rd"|"sad"|"sse"|"satd"|"dct"|"bit"|"zero"|"vsad"|"vsse"|"nsse"|"dctmax"|"chroma"|"msad"|"dct264"
Frame skip compare function
skip_exp?
optionalskip_exp?:number
Frame skip exponent
skip_factor?
optionalskip_factor?:number
Frame skip factor
skip_threshold?
optionalskip_threshold?:number
Frame skip threshold
See
https://ffmpeg.org/ffmpeg-codecs.html#amv
apng
apng:
object
Defined in: src/constants/options.ts:425
APNG (Animated Portable Network Graphics) image
dpi?
optionaldpi?:number
Set image resolution (in dots per inch)
dpm?
optionaldpm?:number
Set image resolution (in dots per meter)
pred?
optionalpred?:"none"|"sub"|"up"|"avg"|"paeth"|"mixed"
Prediction method
See
https://ffmpeg.org/ffmpeg-codecs.html#apng
av1_amf
av1_amf:
object
Defined in: src/constants/options.ts:437
AMD AMF AV1 encoder
align?
optionalalign?:"none"|"64x16"|"1080p"
alignment mode
aq_mode?
optionalaq_mode?:"none"|"caq"
adaptive quantization mode
async_depth?
optionalasync_depth?:number
Set maximum encoding parallelism. Higher values increase output latency.
bf?
optionalbf?:number
B Picture Pattern
bitdepth?
optionalbitdepth?:"8"|"10"
Set color bit deph
enforce_hrd?
optionalenforce_hrd?:boolean
Enforce HRD
filler_data?
optionalfiller_data?:boolean
Filler Data Enable
forced_idr?
optionalforced_idr?:boolean
Force I frames to be IDR frames
header_insertion_mode?
optionalheader_insertion_mode?:"none"|"frame"|"gop"
Set header insertion mode
high_motion_quality_boost_enable?
optionalhigh_motion_quality_boost_enable?:boolean
Enable High motion quality boost mode
latency?
optionallatency?:"none"|"power_saving_real_time"|"real_time"|"lowest_latency"
Set the encoding latency mode
level?
optionallevel?:"auto"|"2.0"|"2.1"|"2.2"|"2.3"|"3.0"|"3.1"|"3.2"|"3.3"|"4.0"|"4.1"|"4.2"|"4.3"|"5.0"|"5.1"|"5.2"|"5.3"|"6.0"|"6.1"|"6.2"|"6.3"|"7.0"|"7.1"|"7.2"|"7.3"
Set the encoding level (default auto)
max_b_frames?
optionalmax_b_frames?:number
Maximum number of consecutive B Pictures
max_qp_b?
optionalmax_qp_b?:number
max quantization parameter for B-frame
max_qp_i?
optionalmax_qp_i?:number
max quantization parameter for I-frame
max_qp_p?
optionalmax_qp_p?:number
max quantization parameter for P-frame
min_qp_b?
optionalmin_qp_b?:number
min quantization parameter for B-frame
min_qp_i?
optionalmin_qp_i?:number
min quantization parameter for I-frame
min_qp_p?
optionalmin_qp_p?:number
min quantization parameter for P-frame
pa_activity_type?
optionalpa_activity_type?:"y"|"yuv"
Set the type of activity analysis
pa_adaptive_mini_gop?
optionalpa_adaptive_mini_gop?:boolean
Enable Adaptive B-frame
pa_caq_strength?
optionalpa_caq_strength?:"low"|"medium"|"high"
Content Adaptive Quantization strength
pa_frame_sad_enable?
optionalpa_frame_sad_enable?:boolean
Enable Frame SAD algorithm
pa_high_motion_quality_boost_mode?
optionalpa_high_motion_quality_boost_mode?:"none"|"auto"
Sets the PA high motion quality boost mode
pa_initial_qp_after_scene_change?
optionalpa_initial_qp_after_scene_change?:number
The QP value that is used immediately after a scene change
pa_lookahead_buffer_depth?
optionalpa_lookahead_buffer_depth?:number
Sets the PA lookahead buffer size
pa_ltr_enable?
optionalpa_ltr_enable?:boolean
Enable long term reference frame management
pa_max_qp_before_force_skip?
optionalpa_max_qp_before_force_skip?:number
The QP threshold to allow a skip frame
pa_paq_mode?
optionalpa_paq_mode?:"none"|"caq"
Sets the perceptual adaptive quantization mode
pa_scene_change_detection_enable?
optionalpa_scene_change_detection_enable?:boolean
Enable scene change detection
pa_scene_change_detection_sensitivity?
optionalpa_scene_change_detection_sensitivity?:"low"|"medium"|"high"
Set the sensitivity of scene change detection
pa_static_scene_detection_enable?
optionalpa_static_scene_detection_enable?:boolean
Enable static scene detection
pa_static_scene_detection_sensitivity?
optionalpa_static_scene_detection_sensitivity?:"low"|"medium"|"high"
Set the sensitivity of static scene detection
pa_taq_mode?
optionalpa_taq_mode?:"none"|"1"|"2"
Sets the temporal adaptive quantization mode
preanalysis?
optionalpreanalysis?:boolean
Enable preanalysis
preencode?
optionalpreencode?:boolean
Enable preencode
preset?
optionalpreset?:"high_quality"|"quality"|"balanced"|"speed"
Set the encoding quality preset
profile?
optionalprofile?:"main"
Set the profile
qp_b?
optionalqp_b?:number
quantization parameter for B-frame
qp_i?
optionalqp_i?:number
quantization parameter for I-frame
qp_p?
optionalqp_p?:number
quantization parameter for P-frame
quality?
optionalquality?:"high_quality"|"quality"|"balanced"|"speed"
Set the encoding quality preset
qvbr_quality_level?
optionalqvbr_quality_level?:number
Sets the QVBR quality level
rc?
optionalrc?:"cqp"|"vbr_latency"|"vbr_peak"|"cbr"|"qvbr"|"hqvbr"|"hqcbr"
Set the rate control mode
skip_frame?
optionalskip_frame?:boolean
Rate Control Based Frame Skip
smart_access_video?
optionalsmart_access_video?:boolean
Enable Smart Access Video to enhance performance by utilizing both APU and dGPU memory access
usage?
optionalusage?:"transcoding"|"ultralowlatency"|"lowlatency"|"webcam"|"high_quality"|"lowlatency_high_quality"
Set the encoding usage
See
https://ffmpeg.org/ffmpeg-codecs.html#av1_005famf
av1_d3d12va
av1_d3d12va:
object
Defined in: src/constants/options.ts:562
D3D12VA av1 encoder
async_depth?
optionalasync_depth?:number
Maximum processing parallelism.
b_depth?
optionalb_depth?:number
Maximum B-frame reference depth
idr_interval?
optionalidr_interval?:number
Distance (in I-frames) between key frames
intra_refresh_duration?
optionalintra_refresh_duration?:number
Number of frames over which to spread intra refresh (0 = GOP size)
intra_refresh_mode?
optionalintra_refresh_mode?:"none"|"row_based"
Set intra refresh mode
level?
optionallevel?:number
Set level (general_level_idc)
max_frame_size?
optionalmax_frame_size?:number
Maximum frame size (in bytes)
me_precision?
optionalme_precision?:"maximum"|"full_pixel"|"half_pixel"|"quarter_pixel"|"eighth_pixel"
Motion estimation precision mode
profile?
optionalprofile?:number
Set profile (general_profile_idc)
qp?
optionalqp?:number
Constant QP (for P-frames; scaled by qfactor/qoffset for I/B)
rc_mode?
optionalrc_mode?:"auto"|"CQP"|"CBR"|"VBR"|"QVBR"
Set rate control mode
tier?
optionaltier?:number
Set tier (general_tier_flag)
See
https://ffmpeg.org/ffmpeg-codecs.html#av1_005fd3d12va
av1_nvenc
av1_nvenc:
object
Defined in: src/constants/options.ts:592
NVIDIA NVENC av1 encoder
a53cc?
optionala53cc?:boolean
Use A53 Closed Captions (if available)
aq-strength?
optionalaq-strength?:number
When Spatial AQ is enabled, this field is used to specify AQ strength. AQ strength scale is from 1 (low) - 15 (aggressive)
b_adapt?
optionalb_adapt?:boolean
When lookahead is enabled, set this to 0 to disable adaptive B-frame decision
b_ref_mode?
optionalb_ref_mode?:"disabled"|"each"|"middle"|"hierarchical"
Use B frames as references
cbr_padding?
optionalcbr_padding?:boolean
Pad the bitstream to ensure bitrate does not drop below the target in CBR mode
cq?
optionalcq?:number
Set target quality level (0 to 63, 0 means automatic) for constant quality mode in VBR rate control
delay?
optionaldelay?:number
Delay frame output by the given amount of frames
dpb_size?
optionaldpb_size?:number
Specifies the DPB size used for encoding (0 means automatic)
extra_sei?
optionalextra_sei?:boolean
Pass on extra SEI data (e.g. a53 cc) to be included in the bitstream
forced-idr?
optionalforced-idr?:boolean
If forcing keyframes, force them as IDR frames.
gpu?
optionalgpu?:"any"|"list"
Selects which NVENC capable GPU to use. First GPU is 0, second is 1, and so on.
highbitdepth?
optionalhighbitdepth?:boolean
Enable 10 bit encode for 8 bit input
init_qpB?
optionalinit_qpB?:number
Initial QP value for B frame
init_qpI?
optionalinit_qpI?:number
Initial QP value for I frame
init_qpP?
optionalinit_qpP?:number
Initial QP value for P frame
intra-refresh?
optionalintra-refresh?:boolean
Use Periodic Intra Refresh instead of IDR frames
ldkfs?
optionalldkfs?:number
Low delay key frame scale; Specifies the Scene Change frame size increase allowed in case of single frame VBV and CBR
level?
optionallevel?:"auto"|"2.0"|"2.1"|"2.2"|"2.3"|"3.0"|"3.1"|"3.2"|"3.3"|"4.0"|"4.1"|"4.2"|"4.3"|"5.0"|"5.1"|"5.2"|"5.3"|"6.0"|"6.1"|"6.2"|"6.3"|"7.0"|"7.1"|"7.2"|"7.3"|"2"|"3"|"4"|"5"|"6"|"7"
Set the encoding level restriction
lookahead_level?
optionallookahead_level?:"0"|"auto"|"1"|"2"|"3"
Specifies the lookahead level. Higher level may improve quality at the expense of performance.
multipass?
optionalmultipass?:"disabled"|"qres"|"fullres"
Set the multipass encoding
no-scenecut?
optionalno-scenecut?:boolean
When lookahead is enabled, set this to 1 to disable adaptive I-frame insertion at scene cuts
nonref_p?
optionalnonref_p?:boolean
Set this to 1 to enable automatic insertion of non-reference P-frames
preset?
optionalpreset?:"fast"|"default"|"medium"|"slow"|"p1"|"p2"|"p3"|"p4"|"p5"|"p6"|"p7"
Set the encoding preset
qmax?
optionalqmax?:number
Specifies the maximum QP used for rate control
qmin?
optionalqmin?:number
Specifies the minimum QP used for rate control
qp?
optionalqp?:number
Constant quantization parameter rate control method
qp_cb_offset?
optionalqp_cb_offset?:number
Quantization parameter offset for cb channel
qp_cr_offset?
optionalqp_cr_offset?:number
Quantization parameter offset for cr channel
rc?
optionalrc?:"cbr"|"constqp"|"vbr"
Override the preset rate-control
rc-lookahead?
optionalrc-lookahead?:number
Number of frames to look ahead for rate-control
rgb_mode?
optionalrgb_mode?:"disabled"|"yuv420"|"yuv444"
Configure how nvenc handles packed RGB input.
s12m_tc?
optionals12m_tc?:boolean
Use timecode (if available)
spatial-aq?
optionalspatial-aq?:boolean
set to 1 to enable Spatial AQ
split_encode_mode?
optionalsplit_encode_mode?:"auto"|"2"|"3"|"4"|"disabled"|"forced"
Specifies the split encoding mode
strict_gop?
optionalstrict_gop?:boolean
Set 1 to minimize GOP-to-GOP rate fluctuations
surfaces?
optionalsurfaces?:number
Number of concurrent surfaces
temporal-aq?
optionaltemporal-aq?:boolean
set to 1 to enable Temporal AQ
tf_level?
optionaltf_level?:"0"|"4"
Specifies the strength of the temporal filtering
tier?
optionaltier?:"0"|"1"
Set the encoding tier
tile-columns?
optionaltile-columns?:number
Number of tile columns to encode with
tile-rows?
optionaltile-rows?:number
Number of tile rows to encode with
timing-info?
optionaltiming-info?:boolean
Include timing info in sequence/frame headers
tune?
optionaltune?:"hq"|"uhq"|"ll"|"ull"|"lossless"
Set the encoding tuning info
weighted_pred?
optionalweighted_pred?:boolean
Enable weighted prediction
zerolatency?
optionalzerolatency?:boolean
Set 1 to indicate zero latency operation (no reordering delay)
See
https://ffmpeg.org/ffmpeg-codecs.html#av1_005fnvenc
av1_qsv
av1_qsv:
object
Defined in: src/constants/options.ts:719
AV1 (Intel Quick Sync Video acceleration)
adaptive_b?
optionaladaptive_b?:number
Adaptive B-frame placement
adaptive_i?
optionaladaptive_i?:number
Adaptive I-frame placement
async_depth?
optionalasync_depth?:number
Maximum processing parallelism
b_strategy?
optionalb_strategy?:number
Strategy to choose between I/P/B-frames
extbrc?
optionalextbrc?:number
Extended bitrate control
forced_idr?
optionalforced_idr?:boolean
Forcing I frames as IDR frames
look_ahead_depth?
optionallook_ahead_depth?:number
Depth of look ahead in number frames, available when extbrc option is enabled
low_delay_brc?
optionallow_delay_brc?:boolean
Allow to strictly obey avg frame size
low_power?
optionallow_power?:boolean
enable low power mode(experimental: many limitations by mfx version, BRC modes, etc.)
max_frame_size?
optionalmax_frame_size?:number
Maximum encoded frame size in bytes
max_frame_size_i?
optionalmax_frame_size_i?:number
Maximum encoded I frame size in bytes
max_frame_size_p?
optionalmax_frame_size_p?:number
Maximum encoded P frame size in bytes
preset?
optionalpreset?:"fast"|"medium"|"slow"|"veryfast"|"faster"|"slower"|"veryslow"
profile?
optionalprofile?:"unknown"|"main"
qsv_params?
optionalqsv_params?:string
Set QSV encoder parameters as key1=value1:key2=value2:...
tile_cols?
optionaltile_cols?:number
Number of columns for tiled encoding
tile_rows?
optionaltile_rows?:number
Number of rows for tiled encoding
See
https://ffmpeg.org/ffmpeg-codecs.html#av1_005fqsv
av1_vaapi
av1_vaapi:
object
Defined in: src/constants/options.ts:757
AV1 (VAAPI)
async_depth?
optionalasync_depth?:number
Maximum processing parallelism.
b_depth?
optionalb_depth?:number
Maximum B-frame reference depth
blbrc?
optionalblbrc?:boolean
Block level based bitrate control
idr_interval?
optionalidr_interval?:number
Distance (in I-frames) between key frames
level?
optionallevel?:"2.0"|"2.1"|"3.0"|"3.1"|"4.0"|"4.1"|"5.0"|"5.1"|"5.2"|"5.3"|"6.0"|"6.1"|"6.2"|"6.3"
Set level (seq_level_idx)
low_power?
optionallow_power?:boolean
Use low-power encoding mode (only available on some platforms;
max_frame_size?
optionalmax_frame_size?:number
Maximum frame size (in bytes)
profile?
optionalprofile?:"main"|"high"|"professional"
Set profile (seq_profile)
rc_mode?
optionalrc_mode?:"auto"|"CQP"|"CBR"|"VBR"|"QVBR"|"ICQ"|"AVBR"
Set rate control mode
tier?
optionaltier?:"main"|"high"
Set tier (seq_tier)
tile_groups?
optionaltile_groups?:number
Number of tile groups for encoding
tiles?
optionaltiles?:string
Tile columns x rows (Use minimal tile column/row number automatically by default)
See
https://ffmpeg.org/ffmpeg-codecs.html#av1_005fvaapi
av1_vulkan
av1_vulkan:
object
Defined in: src/constants/options.ts:787
AV1 (Vulkan)
async_depth?
optionalasync_depth?:number
Maximum processing parallelism.
b_depth?
optionalb_depth?:number
Maximum B-frame reference depth
content?
optionalcontent?:string
Select content type
idr_interval?
optionalidr_interval?:number
Distance (in I-frames) between key frames
level?
optionallevel?:"20"|"21"|"22"|"23"|"30"|"31"|"32"|"33"|"40"|"41"|"42"|"43"|"50"|"51"|"52"|"53"|"60"|"61"|"62"|"63"|"70"|"71"|"72"|"73"
Set level (level_idc)
profile?
optionalprofile?:"main"|"high"|"professional"
Set profile
qp?
optionalqp?:number
Use an explicit constant quantizer for the whole stream
quality?
optionalquality?:number
Set encode quality (trades off against speed, higher is slower)
rc_mode?
optionalrc_mode?:number
Select rate control type
tier?
optionaltier?:"main"|"high"
Set tier (seq_tier)
tune?
optionaltune?:number
Select tuning type
units?
optionalunits?:string
Set units to include
usage?
optionalusage?:string
Select usage type
See
https://ffmpeg.org/ffmpeg-codecs.html#av1_005fvulkan
cfhd
cfhd:
object
Defined in: src/constants/options.ts:843
GoPro CineForm HD
quality?
optionalquality?:"low"|"medium"|"high"|"film3+"|"film3"|"film2+"|"film2"|"film1.5"|"film1+"|"film1"|"high+"|"medium+"|"low+"
set quality
See
https://ffmpeg.org/ffmpeg-codecs.html#cfhd
cinepak
cinepak:
object
Defined in: src/constants/options.ts:851
Cinepak
max_extra_cb_iterations?
optionalmax_extra_cb_iterations?:number
Max extra codebook recalculation passes, more is better and slower
max_strips?
optionalmax_strips?:number
Limit strips/frame, vintage compatible is 1..3, otherwise the more the better
min_strips?
optionalmin_strips?:number
Enforce min strips/frame, more is worse and faster, must be <= max_strips
skip_empty_cb?
optionalskip_empty_cb?:boolean
Avoid wasting bytes, ignore vintage MacOS decoder
strip_number_adaptivity?
optionalstrip_number_adaptivity?:number
How fast the strip number adapts, more is slightly better, much slower
See
https://ffmpeg.org/ffmpeg-codecs.html#cinepak
cljr
cljr:
object
Defined in: src/constants/options.ts:867
Cirrus Logic AccuPak
dither_type?
optionaldither_type?:number
Dither type
See
https://ffmpeg.org/ffmpeg-codecs.html#cljr
dca
dca:
object
Defined in: src/constants/options.ts:875
DCA (DTS Coherent Acoustics)
dca_adpcm?
optionaldca_adpcm?:boolean
Use ADPCM encoding
See
https://ffmpeg.org/ffmpeg-codecs.html#dca
dnxhd
dnxhd:
object
Defined in: src/constants/options.ts:883
VC3/DNxHD
ibias?
optionalibias?:number
intra quant bias
nitris_compat?
optionalnitris_compat?:boolean
encode with Avid Nitris compatibility
profile?
optionalprofile?:"dnxhd"|"dnxhr_444"|"dnxhr_hqx"|"dnxhr_hq"|"dnxhr_sq"|"dnxhr_lb"
See
https://ffmpeg.org/ffmpeg-codecs.html#dnxhd
dvbsub
dvbsub:
object
Defined in: src/constants/options.ts:894
DVB subtitles
min_bpp?
optionalmin_bpp?:number
minimum bits-per-pixel for subtitle colors (2, 4 or 8)
See
https://ffmpeg.org/ffmpeg-codecs.html#dvbsub
dvdsub
dvdsub:
object
Defined in: src/constants/options.ts:902
DVD subtitles
even_rows_fix?
optionaleven_rows_fix?:boolean
Make number of rows even (workaround for some players)
palette?
optionalpalette?:string
set the global palette
See
https://ffmpeg.org/ffmpeg-codecs.html#dvdsub
dvvideo
dvvideo:
object
Defined in: src/constants/options.ts:912
DV (Digital Video)
quant_deadzone?
optionalquant_deadzone?:number
Quantizer dead zone
See
https://ffmpeg.org/ffmpeg-codecs.html#dvvideo
dxv
dxv:
object
Defined in: src/constants/options.ts:920
Resolume DXV
format?
optionalformat?:"dxt1"
See
https://ffmpeg.org/ffmpeg-codecs.html#dxv
exr
exr:
object
Defined in: src/constants/options.ts:927
OpenEXR image
compression?
optionalcompression?:"none"|"rle"|"zip1"|"zip16"
set compression type
format?
optionalformat?:"half"|"float"
set pixel type
gamma?
optionalgamma?:number
set gamma
See
https://ffmpeg.org/ffmpeg-codecs.html#exr
ffv1
ffv1:
object
Defined in: src/constants/options.ts:939
FFmpeg video codec #1
coder?
optionalcoder?:"rice"|"range_def"|"range_tab"|"ac"
Coder type
context?
optionalcontext?:number
Context model
qtable?
optionalqtable?:"default"|"8bit"|"greater8bit"
Quantization table
remap_mode?
optionalremap_mode?:"auto"|"off"|"dualrle"|"flipdualrle"
Remap Mode
remap_optimizer?
optionalremap_optimizer?:number
Remap Optimizer
slicecrc?
optionalslicecrc?:number
Protect slices with CRCs
See
https://ffmpeg.org/ffmpeg-codecs.html#ffv1
ffv1_vulkan
ffv1_vulkan:
object
Defined in: src/constants/options.ts:957
FFmpeg video codec #1 (Vulkan)
async_depth?
optionalasync_depth?:number
Internal parallelization depth
coder?
optionalcoder?:"rice"|"range_def"|"range_tab"
Coder type
context?
optionalcontext?:number
Context model
force_pcm?
optionalforce_pcm?:boolean
Code all slices with no prediction
qtable?
optionalqtable?:"default"|"8bit"|"greater8bit"
Quantization table
rct_search?
optionalrct_search?:boolean
Run a search for RCT parameters (level 4 only)
remap_mode?
optionalremap_mode?:"auto"|"off"|"dualrle"|"flipdualrle"
Remap Mode
slicecrc?
optionalslicecrc?:number
Protect slices with CRCs
slices_h?
optionalslices_h?:number
Number of horizontal slices
slices_v?
optionalslices_v?:number
Number of vertical slices
See
https://ffmpeg.org/ffmpeg-codecs.html#ffv1_005fvulkan
ffvhuff
ffvhuff:
object
Defined in: src/constants/options.ts:983
Huffyuv FFmpeg variant
context?
optionalcontext?:number
Set per-frame huffman tables
non_deterministic?
optionalnon_deterministic?:boolean
Allow multithreading for e.g. context=1 at the expense of determinism
pred?
optionalpred?:"left"|"plane"|"median"
Prediction method
See
https://ffmpeg.org/ffmpeg-codecs.html#ffvhuff
flac
flac:
object
Defined in: src/constants/options.ts:995
FLAC (Free Lossless Audio Codec)
ch_mode?
optionalch_mode?:"auto"|"indep"|"left_side"|"right_side"|"mid_side"
Stereo decorrelation mode
exact_rice_parameters?
optionalexact_rice_parameters?:boolean
Calculate rice parameters exactly
lpc_coeff_precision?
optionallpc_coeff_precision?:number
LPC coefficient precision
lpc_passes?
optionallpc_passes?:number
Number of passes to use for Cholesky factorization during LPC analysis
lpc_type?
optionallpc_type?:"none"|"fixed"|"levinson"|"cholesky"
LPC algorithm
max_partition_order?
optionalmax_partition_order?:number
max_prediction_order?
optionalmax_prediction_order?:number
min_partition_order?
optionalmin_partition_order?:number
min_prediction_order?
optionalmin_prediction_order?:number
multi_dim_quant?
optionalmulti_dim_quant?:boolean
Multi-dimensional quantization
prediction_order_method?
optionalprediction_order_method?:"log"|"estimation"|"2level"|"4level"|"8level"|"search"
Search method for selecting prediction order
See
https://ffmpeg.org/ffmpeg-codecs.html#flac
g726
g726:
object
Defined in: src/constants/options.ts:1019
G.726 ADPCM
code_size?
optionalcode_size?:number
Bits per code
See
https://ffmpeg.org/ffmpeg-codecs.html#g726
g726le
g726le:
object
Defined in: src/constants/options.ts:1027
G.726 little endian ADPCM ("right-justified")
code_size?
optionalcode_size?:number
Bits per code
See
https://ffmpeg.org/ffmpeg-codecs.html#g726le
gif
gif:
object
Defined in: src/constants/options.ts:1035
GIF (Graphics Interchange Format)
gifflags?
optionalgifflags?:string&object|"offsetting"|"transdiff"
set GIF flags
gifimage?
optionalgifimage?:boolean
enable encoding only images per frame
global_palette?
optionalglobal_palette?:boolean
write a palette to the global gif header where feasible
See
https://ffmpeg.org/ffmpeg-codecs.html#gif
h263
h263:
object
Defined in: src/constants/options.ts:1047
H.263 / H.263-1996
border_mask?
optionalborder_mask?:number
increase the quantizer for macroblocks close to borders
chroma_elim_threshold?
optionalchroma_elim_threshold?:number
single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)
error_rate?
optionalerror_rate?:number
Simulate errors in the bitstream to test error concealment.
intra_penalty?
optionalintra_penalty?:number
Penalty for intra blocks in block decision
lmax?
optionallmax?:number
maximum Lagrange factor (VBR)
lmin?
optionallmin?:number
minimum Lagrange factor (VBR)
luma_elim_threshold?
optionalluma_elim_threshold?:number
single coefficient elimination threshold for luminance (negative values also consider dc coefficient)
mb_info?
optionalmb_info?:number
emit macroblock info for RFC 2190 packetization, the parameter value is the maximum payload size
mepc?
optionalmepc?:number
Motion estimation bitrate penalty compensation (1.0 = 256)
mepre?
optionalmepre?:number
pre motion estimation
motion_est?
optionalmotion_est?:"zero"|"epzs"|"xone"
motion estimation algorithm
mpv_flags?
optionalmpv_flags?:string&object|"skip_rd"|"strict_gop"|"qp_rd"|"cbp_rd"|"naq"|"mv0"
Flags common for all mpegvideo-based encoders.
noise_reduction?
optionalnoise_reduction?:number
Noise reduction
obmc?
optionalobmc?:boolean
use overlapped block motion compensation.
ps?
optionalps?:number
RTP payload size in bytes
qsquish?
optionalqsquish?:number
how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function)
quantizer_noise_shaping?
optionalquantizer_noise_shaping?:number
rc_buf_aggressivity?
optionalrc_buf_aggressivity?:number
currently useless
rc_eq?
optionalrc_eq?:string
Set rate control equation. When computing the expression, besides the standard functions
rc_init_cplx?
optionalrc_init_cplx?:number
initial complexity for 1-pass encoding
rc_qmod_amp?
optionalrc_qmod_amp?:number
experimental quantizer modulation
rc_qmod_freq?
optionalrc_qmod_freq?:number
experimental quantizer modulation
sc_threshold?
optionalsc_threshold?:number
Scene change threshold
skip_cmp?
optionalskip_cmp?:"psnr"|"rd"|"sad"|"sse"|"satd"|"dct"|"bit"|"zero"|"vsad"|"vsse"|"nsse"|"dctmax"|"chroma"|"msad"|"dct264"
Frame skip compare function
skip_exp?
optionalskip_exp?:number
Frame skip exponent
skip_factor?
optionalskip_factor?:number
Frame skip factor
skip_threshold?
optionalskip_threshold?:number
Frame skip threshold
See
https://ffmpeg.org/ffmpeg-codecs.html#h263
h263p
h263p:
object
Defined in: src/constants/options.ts:1106
H.263+ / H.263-1998 / H.263 version 2
aiv?
optionalaiv?:boolean
Use alternative inter VLC.
border_mask?
optionalborder_mask?:number
increase the quantizer for macroblocks close to borders
chroma_elim_threshold?
optionalchroma_elim_threshold?:number
single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)
error_rate?
optionalerror_rate?:number
Simulate errors in the bitstream to test error concealment.
intra_penalty?
optionalintra_penalty?:number
Penalty for intra blocks in block decision
lmax?
optionallmax?:number
maximum Lagrange factor (VBR)
lmin?
optionallmin?:number
minimum Lagrange factor (VBR)
luma_elim_threshold?
optionalluma_elim_threshold?:number
single coefficient elimination threshold for luminance (negative values also consider dc coefficient)
mepc?
optionalmepc?:number
Motion estimation bitrate penalty compensation (1.0 = 256)
mepre?
optionalmepre?:number
pre motion estimation
motion_est?
optionalmotion_est?:"zero"|"epzs"|"xone"
motion estimation algorithm
mpv_flags?
optionalmpv_flags?:string&object|"skip_rd"|"strict_gop"|"qp_rd"|"cbp_rd"|"naq"|"mv0"
Flags common for all mpegvideo-based encoders.
noise_reduction?
optionalnoise_reduction?:number
Noise reduction
obmc?
optionalobmc?:boolean
use overlapped block motion compensation.
ps?
optionalps?:number
RTP payload size in bytes
qsquish?
optionalqsquish?:number
how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function)
quantizer_noise_shaping?
optionalquantizer_noise_shaping?:number
rc_buf_aggressivity?
optionalrc_buf_aggressivity?:number
currently useless
rc_eq?
optionalrc_eq?:string
Set rate control equation. When computing the expression, besides the standard functions
rc_init_cplx?
optionalrc_init_cplx?:number
initial complexity for 1-pass encoding
rc_qmod_amp?
optionalrc_qmod_amp?:number
experimental quantizer modulation
rc_qmod_freq?
optionalrc_qmod_freq?:number
experimental quantizer modulation
sc_threshold?
optionalsc_threshold?:number
Scene change threshold
skip_cmp?
optionalskip_cmp?:"psnr"|"rd"|"sad"|"sse"|"satd"|"dct"|"bit"|"zero"|"vsad"|"vsse"|"nsse"|"dctmax"|"chroma"|"msad"|"dct264"
Frame skip compare function
skip_exp?
optionalskip_exp?:number
Frame skip exponent
skip_factor?
optionalskip_factor?:number
Frame skip factor
skip_threshold?
optionalskip_threshold?:number
Frame skip threshold
structured_slices?
optionalstructured_slices?:boolean
Write slice start position at every GOB header instead of just GOB number.
umv?
optionalumv?:boolean
Use unlimited motion vectors.
See
https://ffmpeg.org/ffmpeg-codecs.html#h263p
h264_amf
h264_amf:
object
Defined in: src/constants/options.ts:1169
AMD AMF H.264 Encoder
async_depth?
optionalasync_depth?:number
Set maximum encoding parallelism. Higher values increase output latency.
aud?
optionalaud?:boolean
Inserts AU Delimiter NAL unit
bf?
optionalbf?:number
B Picture Pattern
bf_delta_qp?
optionalbf_delta_qp?:number
B-Picture Delta QP
bf_ref?
optionalbf_ref?:boolean
Enable Reference to B-Frames
bf_ref_delta_qp?
optionalbf_ref_delta_qp?:number
Reference B-Picture Delta QP
coder?
optionalcoder?:"auto"|"cavlc"|"cabac"
Coding Type
enforce_hrd?
optionalenforce_hrd?:boolean
Enforce HRD
filler_data?
optionalfiller_data?:boolean
Filler Data Enable
forced_idr?
optionalforced_idr?:boolean
Force I frames to be IDR frames
frame_skipping?
optionalframe_skipping?:boolean
Rate Control Based Frame Skip
header_spacing?
optionalheader_spacing?:number
Header Insertion Spacing
high_motion_quality_boost_enable?
optionalhigh_motion_quality_boost_enable?:boolean
Enable High motion quality boost mode
intra_refresh_mb?
optionalintra_refresh_mb?:number
Intra Refresh MBs Number Per Slot in Macroblocks
latency?
optionallatency?:boolean
enables low latency mode
level?
optionallevel?:"auto"|"2.0"|"2.1"|"2.2"|"3.0"|"3.1"|"3.2"|"4.0"|"4.1"|"4.2"|"5.0"|"5.1"|"5.2"|"6.0"|"6.1"|"6.2"|"1.0"|"1.1"|"1.2"|"1.3"
Profile Level
max_au_size?
optionalmax_au_size?:number
Maximum Access Unit Size for rate control (in bits)
max_b_frames?
optionalmax_b_frames?:number
Maximum number of consecutive B Pictures
me_half_pel?
optionalme_half_pel?:boolean
Enable ME Half Pixel
me_quarter_pel?
optionalme_quarter_pel?:boolean
Enable ME Quarter Pixel
pa_activity_type?
optionalpa_activity_type?:"y"|"yuv"
Set the type of activity analysis
pa_adaptive_mini_gop?
optionalpa_adaptive_mini_gop?:boolean
Enable Adaptive MiniGOP
pa_caq_strength?
optionalpa_caq_strength?:"low"|"medium"|"high"
Content Adaptive Quantization strength
pa_frame_sad_enable?
optionalpa_frame_sad_enable?:boolean
Enable Frame SAD algorithm
pa_high_motion_quality_boost_mode?
optionalpa_high_motion_quality_boost_mode?:"none"|"auto"
Sets the PA high motion quality boost mode
pa_initial_qp_after_scene_change?
optionalpa_initial_qp_after_scene_change?:number
The QP value that is used immediately after a scene change
pa_lookahead_buffer_depth?
optionalpa_lookahead_buffer_depth?:number
Sets the PA lookahead buffer size
pa_ltr_enable?
optionalpa_ltr_enable?:boolean
Enable long term reference frame management
pa_max_qp_before_force_skip?
optionalpa_max_qp_before_force_skip?:number
The QP threshold to allow a skip frame
pa_paq_mode?
optionalpa_paq_mode?:"none"|"caq"
Sets the perceptual adaptive quantization mode
pa_scene_change_detection_enable?
optionalpa_scene_change_detection_enable?:boolean
Enable scene change detection
pa_scene_change_detection_sensitivity?
optionalpa_scene_change_detection_sensitivity?:"low"|"medium"|"high"
Set the sensitivity of scene change detection
pa_static_scene_detection_enable?
optionalpa_static_scene_detection_enable?:boolean
Enable static scene detection
pa_static_scene_detection_sensitivity?
optionalpa_static_scene_detection_sensitivity?:"low"|"medium"|"high"
Set the sensitivity of static scene detection
pa_taq_mode?
optionalpa_taq_mode?:"none"|"1"|"2"
Sets the temporal adaptive quantization mode
preanalysis?
optionalpreanalysis?:boolean
Enable preanalysis
preencode?
optionalpreencode?:boolean
Pre-encode assisted rate control
preset?
optionalpreset?:"high_quality"|"quality"|"balanced"|"speed"
Set the encoding quality preset
profile?
optionalprofile?:"main"|"high"|"constrained_baseline"|"constrained_high"
Profile
qp_b?
optionalqp_b?:number
Quantization Parameter for B-Frame
qp_i?
optionalqp_i?:number
Quantization Parameter for I-Frame
qp_p?
optionalqp_p?:number
Quantization Parameter for P-Frame
quality?
optionalquality?:"high_quality"|"quality"|"balanced"|"speed"
Set the encoding quality preset
qvbr_quality_level?
optionalqvbr_quality_level?:number
Sets the QVBR quality level
rc?
optionalrc?:"cqp"|"vbr_latency"|"vbr_peak"|"cbr"|"qvbr"|"hqvbr"|"hqcbr"
Rate Control Method
smart_access_video?
optionalsmart_access_video?:boolean
Enable Smart Access Video to enhance performance by utilizing both APU and dGPU memory access
usage?
optionalusage?:"transcoding"|"ultralowlatency"|"lowlatency"|"webcam"|"high_quality"|"lowlatency_high_quality"
Encoder Usage
vbaq?
optionalvbaq?:boolean
Enable VBAQ
See
https://ffmpeg.org/ffmpeg-codecs.html#h264_005famf
h264_d3d12va
h264_d3d12va:
object
Defined in: src/constants/options.ts:1272
D3D12VA h264 encoder
async_depth?
optionalasync_depth?:number
Maximum processing parallelism.
b_depth?
optionalb_depth?:number
Maximum B-frame reference depth
coder?
optionalcoder?:number
Entropy coder type
constrained_intra_pred?
optionalconstrained_intra_pred?:boolean
Constrained intra prediction (constrained_intra_pred_flag)
deblock?
optionaldeblock?:boolean
Deblocking filter mode
idr_interval?
optionalidr_interval?:number
Distance (in I-frames) between key frames
intra_refresh_duration?
optionalintra_refresh_duration?:number
Number of frames over which to spread intra refresh (0 = GOP size)
intra_refresh_mode?
optionalintra_refresh_mode?:"none"|"row_based"
Set intra refresh mode
level?
optionallevel?:number
Set level (general_level_idc)
max_frame_size?
optionalmax_frame_size?:number
Maximum frame size (in bytes)
me_precision?
optionalme_precision?:"maximum"|"full_pixel"|"half_pixel"|"quarter_pixel"|"eighth_pixel"
Motion estimation precision mode
profile?
optionalprofile?:number
Set profile (general_profile_idc)
qp?
optionalqp?:number
Constant QP (for P-frames; scaled by qfactor/qoffset for I/B)
rc_mode?
optionalrc_mode?:"auto"|"CQP"|"CBR"|"VBR"|"QVBR"
Set rate control mode
See
https://ffmpeg.org/ffmpeg-codecs.html#h264_005fd3d12va
h264_nvenc
h264_nvenc:
object
Defined in: src/constants/options.ts:1306
NVIDIA NVENC H.264 encoder
2pass?
optional2pass?:boolean
Use 2pass encoding mode
a53cc?
optionala53cc?:boolean
Use A53 Closed Captions (if available)
aq-strength?
optionalaq-strength?:number
When Spatial AQ is enabled, this field is used to specify AQ strength. AQ strength scale is from 1 (low) - 15 (aggressive)
aud?
optionalaud?:boolean
Use access unit delimiters
b_adapt?
optionalb_adapt?:boolean
When lookahead is enabled, set this to 0 to disable adaptive B-frame decision
b_ref_mode?
optionalb_ref_mode?:"disabled"|"each"|"middle"
Use B frames as references
bluray-compat?
optionalbluray-compat?:boolean
Bluray compatibility workarounds
cbr?
optionalcbr?:boolean
Use cbr encoding mode
cbr_padding?
optionalcbr_padding?:boolean
Pad the bitstream to ensure bitrate does not drop below the target in CBR mode
coder?
optionalcoder?:"auto"|"default"|"ac"|"cavlc"|"cabac"|"vlc"
Coder type
constrained-encoding?
optionalconstrained-encoding?:boolean
Enable constrainedFrame encoding where each slice in the constrained picture is independent of other slices
cq?
optionalcq?:number
Set target quality level (0 to 51, 0 means automatic) for constant quality mode in VBR rate control
delay?
optionaldelay?:number
Delay frame output by the given amount of frames
dpb_size?
optionaldpb_size?:number
Specifies the DPB size used for encoding (0 means automatic)
extra_sei?
optionalextra_sei?:boolean
Pass on extra SEI data (e.g. a53 cc) to be included in the bitstream
forced-idr?
optionalforced-idr?:boolean
If forcing keyframes, force them as IDR frames.
gpu?
optionalgpu?:"any"|"list"
Selects which NVENC capable GPU to use. First GPU is 0, second is 1, and so on.
highbitdepth?
optionalhighbitdepth?:boolean
Enable 10 bit encode for 8 bit input
init_qpB?
optionalinit_qpB?:number
Initial QP value for B frame
init_qpI?
optionalinit_qpI?:number
Initial QP value for I frame
init_qpP?
optionalinit_qpP?:number
Initial QP value for P frame
intra-refresh?
optionalintra-refresh?:boolean
Use Periodic Intra Refresh instead of IDR frames
ldkfs?
optionalldkfs?:number
Low delay key frame scale; Specifies the Scene Change frame size increase allowed in case of single frame VBV and CBR
level?
optionallevel?:"auto"|"2.0"|"2.1"|"2.2"|"3.0"|"3.1"|"3.2"|"4.0"|"4.1"|"4.2"|"5.0"|"5.1"|"5.2"|"6.0"|"6.1"|"6.2"|"1"|"2"|"3"|"4"|"5"|"1.0"|"1.1"|"1.2"|"1.3"|"1b"|"1.0b"
Set the encoding level restriction
lookahead_level?
optionallookahead_level?:"0"|"auto"|"1"|"2"|"3"
Specifies the lookahead level. Higher level may improve quality at the expense of performance.
max_slice_size?
optionalmax_slice_size?:number
Maximum encoded slice size in bytes
multipass?
optionalmultipass?:"disabled"|"qres"|"fullres"
Set the multipass encoding
no-scenecut?
optionalno-scenecut?:boolean
When lookahead is enabled, set this to 1 to disable adaptive I-frame insertion at scene cuts
nonref_p?
optionalnonref_p?:boolean
Set this to 1 to enable automatic insertion of non-reference P-frames
preset?
optionalpreset?:"fast"|"default"|"medium"|"slow"|"p1"|"p2"|"p3"|"p4"|"p5"|"p6"|"p7"|"hq"|"ll"|"lossless"|"hp"|"bd"|"llhq"|"llhp"|"losslesshp"
Set the encoding preset
profile?
optionalprofile?:"main"|"high"|"baseline"|"high10"|"high422"|"high444p"
Set the encoding profile
qmax?
optionalqmax?:number
Specifies the maximum QP used for rate control
qmin?
optionalqmin?:number
Specifies the minimum QP used for rate control
qp?
optionalqp?:number
Constant quantization parameter rate control method
qp_cb_offset?
optionalqp_cb_offset?:number
Quantization parameter offset for cb channel
qp_cr_offset?
optionalqp_cr_offset?:number
Quantization parameter offset for cr channel
rc?
optionalrc?:"cbr"|"constqp"|"vbr"|"vbr_minqp"|"ll_2pass_quality"|"ll_2pass_size"|"vbr_2pass"|"cbr_ld_hq"|"cbr_hq"|"vbr_hq"
Override the preset rate-control
rc-lookahead?
optionalrc-lookahead?:number
Number of frames to look ahead for rate-control
rgb_mode?
optionalrgb_mode?:"disabled"|"yuv420"|"yuv444"
Configure how nvenc handles packed RGB input.
s12m_tc?
optionals12m_tc?:boolean
Use timecode (if available)
single-slice-intra-refresh?
optionalsingle-slice-intra-refresh?:boolean
Use single slice intra refresh
spatial_aq?
optionalspatial_aq?:boolean
set to 1 to enable Spatial AQ
spatial-aq?
optionalspatial-aq?:boolean
set to 1 to enable Spatial AQ
strict_gop?
optionalstrict_gop?:boolean
Set 1 to minimize GOP-to-GOP rate fluctuations
surfaces?
optionalsurfaces?:number
Number of concurrent surfaces
temporal_aq?
optionaltemporal_aq?:boolean
set to 1 to enable Temporal AQ
temporal-aq?
optionaltemporal-aq?:boolean
set to 1 to enable Temporal AQ
tf_level?
optionaltf_level?:"0"|"4"
Specifies the strength of the temporal filtering
tune?
optionaltune?:"hq"|"ll"|"ull"|"lossless"
Set the encoding tuning info
udu_sei?
optionaludu_sei?:boolean
Pass on user data unregistered SEI if available
weighted_pred?
optionalweighted_pred?:number
Set 1 to enable weighted prediction
zerolatency?
optionalzerolatency?:boolean
Set 1 to indicate zero latency operation (no reordering delay)
See
https://ffmpeg.org/ffmpeg-codecs.html#h264_005fnvenc
h264_omx
h264_omx:
object
Defined in: src/constants/options.ts:1444
OpenMAX IL H.264 video encoder
omx_libname?
optionalomx_libname?:string
OpenMAX library name
omx_libprefix?
optionalomx_libprefix?:string
OpenMAX library prefix
profile?
optionalprofile?:"main"|"high"|"baseline"
Set the encoding profile
zerocopy?
optionalzerocopy?:number
Try to avoid copying input frames if possible
See
https://ffmpeg.org/ffmpeg-codecs.html#h264_005fomx
h264_qsv
h264_qsv:
object
Defined in: src/constants/options.ts:1458
H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (Intel Quick Sync Video acceleration)
a53cc?
optionala53cc?:boolean
Use A53 Closed Captions (if available)
adaptive_b?
optionaladaptive_b?:number
Adaptive B-frame placement
adaptive_i?
optionaladaptive_i?:number
Adaptive I-frame placement
async_depth?
optionalasync_depth?:number
Maximum processing parallelism
aud?
optionalaud?:boolean
Insert the Access Unit Delimiter NAL
avbr_accuracy?
optionalavbr_accuracy?:number
Accuracy of the AVBR ratecontrol (unit of tenth of percent)
avbr_convergence?
optionalavbr_convergence?:number
Convergence of the AVBR ratecontrol (unit of 100 frames)
b_strategy?
optionalb_strategy?:number
Strategy to choose between I/P/B-frames
bitrate_limit?
optionalbitrate_limit?:number
Toggle bitrate limitations
cavlc?
optionalcavlc?:boolean
Enable CAVLC
dblk_idc?
optionaldblk_idc?:number
This option disable deblocking. It has value in range 0~2.
dual_gfx?
optionaldual_gfx?:"off"|"on"|"adaptive"
Prefer processing on both iGfx and dGfx simultaneously
extbrc?
optionalextbrc?:number
Extended bitrate control
forced_idr?
optionalforced_idr?:boolean
Forcing I frames as IDR frames
idr_interval?
optionalidr_interval?:number
Distance (in I-frames) between IDR frames
int_ref_cycle_dist?
optionalint_ref_cycle_dist?:number
Distance between the beginnings of the intra-refresh cycles in frames
int_ref_cycle_size?
optionalint_ref_cycle_size?:number
Number of frames in the intra refresh cycle
int_ref_qp_delta?
optionalint_ref_qp_delta?:number
QP difference for the refresh MBs
int_ref_type?
optionalint_ref_type?:"none"|"slice"|"vertical"|"horizontal"
Intra refresh type. B frames should be set to 0.
look_ahead?
optionallook_ahead?:boolean
Use VBR algorithm with look ahead
look_ahead_depth?
optionallook_ahead_depth?:number
Depth of look ahead in number frames
look_ahead_downsampling?
optionallook_ahead_downsampling?:"unknown"|"auto"|"off"|"2x"|"4x"
Downscaling factor for the frames saved for the lookahead analysis
low_delay_brc?
optionallow_delay_brc?:boolean
Allow to strictly obey avg frame size
low_power?
optionallow_power?:boolean
enable low power mode(experimental: many limitations by mfx version, BRC modes, etc.)
max_dec_frame_buffering?
optionalmax_dec_frame_buffering?:number
Maximum number of frames buffered in the DPB
max_frame_size?
optionalmax_frame_size?:number
Maximum encoded frame size in bytes
max_frame_size_i?
optionalmax_frame_size_i?:number
Maximum encoded I frame size in bytes
max_frame_size_p?
optionalmax_frame_size_p?:number
Maximum encoded P frame size in bytes
max_qp_b?
optionalmax_qp_b?:number
Maximum video quantizer scale for B frame
max_qp_i?
optionalmax_qp_i?:number
Maximum video quantizer scale for I frame
max_qp_p?
optionalmax_qp_p?:number
Maximum video quantizer scale for P frame
max_slice_size?
optionalmax_slice_size?:number
Maximum encoded slice size in bytes
mbbrc?
optionalmbbrc?:number
MB level bitrate control
mfmode?
optionalmfmode?:"auto"|"off"
Multi-Frame Mode
min_qp_b?
optionalmin_qp_b?:number
Minimum video quantizer scale for B frame
min_qp_i?
optionalmin_qp_i?:number
Minimum video quantizer scale for I frame
min_qp_p?
optionalmin_qp_p?:number
Minimum video quantizer scale for P frame
p_strategy?
optionalp_strategy?:number
Enable P-pyramid: 0-default 1-simple 2-pyramid(bf need to be set to 0).
pic_timing_sei?
optionalpic_timing_sei?:boolean
Insert picture timing SEI with pic_struct_syntax element
preset?
optionalpreset?:"fast"|"medium"|"slow"|"veryfast"|"faster"|"slower"|"veryslow"
profile?
optionalprofile?:"unknown"|"main"|"high"|"baseline"
qsv_params?
optionalqsv_params?:string
Set QSV encoder parameters as key1=value1:key2=value2:...
rdo?
optionalrdo?:number
Enable rate distortion optimization
recovery_point_sei?
optionalrecovery_point_sei?:number
Insert recovery point SEI messages
repeat_pps?
optionalrepeat_pps?:boolean
repeat pps for every frame
scenario?
optionalscenario?:"unknown"|"displayremoting"|"videoconference"|"archive"|"livestreaming"|"cameracapture"|"videosurveillance"|"gamestreaming"|"remotegaming"
A hint to encoder about the scenario for the encoding session
single_sei_nal_unit?
optionalsingle_sei_nal_unit?:number
Put all the SEI messages into one NALU
skip_frame?
optionalskip_frame?:"no_skip"|"insert_dummy"|"insert_nothing"|"brc_only"
Allow frame skipping
vcm?
optionalvcm?:boolean
Use the video conferencing mode ratecontrol
See
https://ffmpeg.org/ffmpeg-codecs.html#h264_005fqsv
h264_vaapi
h264_vaapi:
object
Defined in: src/constants/options.ts:1560
H.264/AVC (VAAPI)
async_depth?
optionalasync_depth?:number
Maximum processing parallelism.
aud?
optionalaud?:boolean
Include AUD
b_depth?
optionalb_depth?:number
Maximum B-frame reference depth
blbrc?
optionalblbrc?:boolean
Block level based bitrate control
coder?
optionalcoder?:"ac"|"cavlc"|"cabac"|"vlc"
Entropy coder type
idr_interval?
optionalidr_interval?:number
Distance (in I-frames) between key frames
level?
optionallevel?:"2.1"|"2.2"|"3.1"|"3.2"|"4.1"|"4.2"|"5.1"|"5.2"|"6.1"|"6.2"|"1"|"2"|"3"|"4"|"5"|"6"|"1.1"|"1.2"|"1.3"
Set level (level_idc)
low_power?
optionallow_power?:boolean
Use low-power encoding mode (only available on some platforms;
max_frame_size?
optionalmax_frame_size?:number
Maximum frame size (in bytes)
profile?
optionalprofile?:"main"|"high"|"constrained_baseline"|"high10"
Set profile (profile_idc and constraint_set*_flag)
qp?
optionalqp?:number
Constant QP (for P-frames; scaled by qfactor/qoffset for I/B)
quality?
optionalquality?:number
Set encode quality (trades off against speed, higher is faster)
rc_mode?
optionalrc_mode?:"auto"|"CQP"|"CBR"|"VBR"|"QVBR"|"ICQ"|"AVBR"
Set rate control mode
sei?
optionalsei?:string&object|"identifier"|"timing"|"recovery_point"|"a53_cc"
Set SEI to include
See
https://ffmpeg.org/ffmpeg-codecs.html#h264_005fvaapi
h264_videotoolbox
h264_videotoolbox:
object
Defined in: src/constants/options.ts:1594
VideoToolbox H.264 Encoder
a53cc?
optionala53cc?:boolean
Use A53 Closed Captions (if available)
allow_sw?
optionalallow_sw?:boolean
Allow software encoding
coder?
optionalcoder?:"ac"|"cavlc"|"cabac"|"vlc"
Entropy coding
constant_bit_rate?
optionalconstant_bit_rate?:boolean
Require constant bit rate (macOS 13 or newer)
frames_after?
optionalframes_after?:boolean
Other frames will come after the frames in this session. This helps smooth concatenation issues.
frames_before?
optionalframes_before?:boolean
Other frames will come before the frames in this session. This helps smooth concatenation issues.
level?
optionallevel?:"3.0"|"3.1"|"3.2"|"4.0"|"4.1"|"4.2"|"5.0"|"5.1"|"5.2"|"1.3"
Level
max_ref_frames?
optionalmax_ref_frames?:number
Sets the maximum number of reference frames. This only has an effect when the value is less than the maximum allowed by the profile/level.
max_slice_bytes?
optionalmax_slice_bytes?:number
Set the maximum number of bytes in an H.264 slice.
power_efficient?
optionalpower_efficient?:number
Set to 1 to enable more power-efficient encoding if supported.
prio_speed?
optionalprio_speed?:boolean
prioritize encoding speed
profile?
optionalprofile?:"main"|"high"|"constrained_baseline"|"constrained_high"|"baseline"|"extended"
Profile
realtime?
optionalrealtime?:boolean
Hint that encoding should happen in real-time if not faster (e.g. capturing from camera).
require_sw?
optionalrequire_sw?:boolean
Require software encoding
spatial_aq?
optionalspatial_aq?:number
Set to 1 to enable spatial AQ if supported.
See
https://ffmpeg.org/ffmpeg-codecs.html#h264_005fvideotoolbox
h264_vulkan
h264_vulkan:
object
Defined in: src/constants/options.ts:1630
H.264/AVC (Vulkan)
async_depth?
optionalasync_depth?:number
Maximum processing parallelism.
b_depth?
optionalb_depth?:number
Maximum B-frame reference depth
coder?
optionalcoder?:number
Entropy coder type
content?
optionalcontent?:string
Select content type
idr_interval?
optionalidr_interval?:number
Distance (in I-frames) between key frames
level?
optionallevel?:"2.1"|"2.2"|"3.1"|"3.2"|"4.1"|"4.2"|"5.1"|"5.2"|"6.1"|"6.2"|"1"|"2"|"3"|"4"|"5"|"6"|"1.1"|"1.2"|"1.3"
Set level (level_idc)
profile?
optionalprofile?:"main"|"high"|"constrained_baseline"|"high444p"
Set profile (profile_idc and constraint_set*_flag)
qp?
optionalqp?:number
Use an explicit constant quantizer for the whole stream
quality?
optionalquality?:number
Set encode quality (trades off against speed, higher is slower)
rc_mode?
optionalrc_mode?:number
Select rate control type
tune?
optionaltune?:number
Select tuning type
units?
optionalunits?:string
Set units to include
usage?
optionalusage?:string
Select usage type
See
https://ffmpeg.org/ffmpeg-codecs.html#h264_005fvulkan
hap
hap:
object
Defined in: src/constants/options.ts:1662
Vidvox Hap
chunks?
optionalchunks?:number
chunk count
compressor?
optionalcompressor?:"none"|"snappy"
second-stage compressor
format?
optionalformat?:"hap"|"hap_alpha"|"hap_q"
See
https://ffmpeg.org/ffmpeg-codecs.html#hap
hevc_amf
hevc_amf:
object
Defined in: src/constants/options.ts:1673
AMD AMF HEVC encoder
async_depth?
optionalasync_depth?:number
Set maximum encoding parallelism. Higher values increase output latency.
aud?
optionalaud?:boolean
Inserts AU Delimiter NAL unit
bitdepth?
optionalbitdepth?:"8"|"10"
Set color bit deph
enforce_hrd?
optionalenforce_hrd?:boolean
Enforce HRD
filler_data?
optionalfiller_data?:boolean
Filler Data Enable
forced_idr?
optionalforced_idr?:boolean
Force I frames to be IDR frames
gops_per_idr?
optionalgops_per_idr?:number
GOPs per IDR 0-no IDR will be inserted
header_insertion_mode?
optionalheader_insertion_mode?:"none"|"gop"|"idr"
Set header insertion mode
high_motion_quality_boost_enable?
optionalhigh_motion_quality_boost_enable?:boolean
Enable High motion quality boost mode
latency?
optionallatency?:boolean
enables low latency mode
level?
optionallevel?:"auto"|"2.0"|"2.1"|"3.0"|"3.1"|"4.0"|"4.1"|"5.0"|"5.1"|"5.2"|"6.0"|"6.1"|"6.2"|"1.0"
Set the encoding level (default auto)
max_au_size?
optionalmax_au_size?:number
Maximum Access Unit Size for rate control (in bits)
max_qp_i?
optionalmax_qp_i?:number
max quantization parameter for I-frame
max_qp_p?
optionalmax_qp_p?:number
max quantization parameter for P-frame
me_half_pel?
optionalme_half_pel?:boolean
Enable ME Half Pixel
me_quarter_pel?
optionalme_quarter_pel?:boolean
Enable ME Quarter Pixel
min_qp_i?
optionalmin_qp_i?:number
min quantization parameter for I-frame
min_qp_p?
optionalmin_qp_p?:number
min quantization parameter for P-frame
pa_activity_type?
optionalpa_activity_type?:"y"|"yuv"
Set the type of activity analysis
pa_caq_strength?
optionalpa_caq_strength?:"low"|"medium"|"high"
Content Adaptive Quantization strength
pa_frame_sad_enable?
optionalpa_frame_sad_enable?:boolean
Enable Frame SAD algorithm
pa_high_motion_quality_boost_mode?
optionalpa_high_motion_quality_boost_mode?:"none"|"auto"
Sets the PA high motion quality boost mode
pa_initial_qp_after_scene_change?
optionalpa_initial_qp_after_scene_change?:number
The QP value that is used immediately after a scene change
pa_lookahead_buffer_depth?
optionalpa_lookahead_buffer_depth?:number
Sets the PA lookahead buffer size
pa_ltr_enable?
optionalpa_ltr_enable?:boolean
Enable long term reference frame management
pa_max_qp_before_force_skip?
optionalpa_max_qp_before_force_skip?:number
The QP threshold to allow a skip frame
pa_paq_mode?
optionalpa_paq_mode?:"none"|"caq"
Sets the perceptual adaptive quantization mode
pa_scene_change_detection_enable?
optionalpa_scene_change_detection_enable?:boolean
Enable scene change detection
pa_scene_change_detection_sensitivity?
optionalpa_scene_change_detection_sensitivity?:"low"|"medium"|"high"
Set the sensitivity of scene change detection
pa_static_scene_detection_enable?
optionalpa_static_scene_detection_enable?:boolean
Enable static scene detection
pa_static_scene_detection_sensitivity?
optionalpa_static_scene_detection_sensitivity?:"low"|"medium"|"high"
Set the sensitivity of static scene detection
pa_taq_mode?
optionalpa_taq_mode?:"none"|"1"|"2"
Sets the temporal adaptive quantization mode
preanalysis?
optionalpreanalysis?:boolean
Enable preanalysis
preencode?
optionalpreencode?:boolean
Enable preencode
preset?
optionalpreset?:"high_quality"|"quality"|"balanced"|"speed"
Set the encoding quality preset
profile?
optionalprofile?:"main10"|"main"
Set the profile
profile_tier?
optionalprofile_tier?:"main"|"high"
Set the profile tier (default main)
qp_i?
optionalqp_i?:number
quantization parameter for I-frame
qp_p?
optionalqp_p?:number
quantization parameter for P-frame
quality?
optionalquality?:"high_quality"|"quality"|"balanced"|"speed"
Set the encoding quality preset
qvbr_quality_level?
optionalqvbr_quality_level?:number
Sets the QVBR quality level
rc?
optionalrc?:"cqp"|"vbr_latency"|"vbr_peak"|"cbr"|"qvbr"|"hqvbr"|"hqcbr"
Set the rate control mode
skip_frame?
optionalskip_frame?:boolean
Rate Control Based Frame Skip
smart_access_video?
optionalsmart_access_video?:boolean
Enable Smart Access Video to enhance performance by utilizing both APU and dGPU memory access
usage?
optionalusage?:"transcoding"|"ultralowlatency"|"lowlatency"|"webcam"|"high_quality"|"lowlatency_high_quality"
Set the encoding usage
vbaq?
optionalvbaq?:boolean
Enable VBAQ
See
https://ffmpeg.org/ffmpeg-codecs.html#hevc_005famf
hevc_d3d12va
hevc_d3d12va:
object
Defined in: src/constants/options.ts:1771
D3D12VA hevc encoder
async_depth?
optionalasync_depth?:number
Maximum processing parallelism.
b_depth?
optionalb_depth?:number
Maximum B-frame reference depth
constrained_intra_pred?
optionalconstrained_intra_pred?:boolean
Constrained intra prediction (constrained_intra_pred_flag)
idr_interval?
optionalidr_interval?:number
Distance (in I-frames) between key frames
intra_refresh_duration?
optionalintra_refresh_duration?:number
Number of frames over which to spread intra refresh (0 = GOP size)
intra_refresh_mode?
optionalintra_refresh_mode?:"none"|"row_based"
Set intra refresh mode
level?
optionallevel?:number
Set level (general_level_idc)
max_frame_size?
optionalmax_frame_size?:number
Maximum frame size (in bytes)
me_precision?
optionalme_precision?:"maximum"|"full_pixel"|"half_pixel"|"quarter_pixel"|"eighth_pixel"
Motion estimation precision mode
profile?
optionalprofile?:number
Set profile (general_profile_idc)
qp?
optionalqp?:number
Constant QP (for P-frames; scaled by qfactor/qoffset for I/B)
rc_mode?
optionalrc_mode?:"auto"|"CQP"|"CBR"|"VBR"|"QVBR"
Set rate control mode
tier?
optionaltier?:number
Set tier (general_tier_flag)
See
https://ffmpeg.org/ffmpeg-codecs.html#hevc_005fd3d12va
hevc_nvenc
hevc_nvenc:
object
Defined in: src/constants/options.ts:1803
NVIDIA NVENC hevc encoder
2pass?
optional2pass?:boolean
Use 2pass encoding mode
a53cc?
optionala53cc?:boolean
Use A53 Closed Captions (if available)
aq-strength?
optionalaq-strength?:number
When Spatial AQ is enabled, this field is used to specify AQ strength. AQ strength scale is from 1 (low) - 15 (aggressive)
aud?
optionalaud?:boolean
Use access unit delimiters
b_adapt?
optionalb_adapt?:boolean
When lookahead is enabled, set this to 0 to disable adaptive B-frame decision
b_ref_mode?
optionalb_ref_mode?:"disabled"|"each"|"middle"
Use B frames as references
bluray-compat?
optionalbluray-compat?:boolean
Bluray compatibility workarounds
cbr?
optionalcbr?:boolean
Use cbr encoding mode
cbr_padding?
optionalcbr_padding?:boolean
Pad the bitstream to ensure bitrate does not drop below the target in CBR mode
constrained-encoding?
optionalconstrained-encoding?:boolean
Enable constrainedFrame encoding where each slice in the constrained picture is independent of other slices
cq?
optionalcq?:number
Set target quality level (0 to 51, 0 means automatic) for constant quality mode in VBR rate control
delay?
optionaldelay?:number
Delay frame output by the given amount of frames
dpb_size?
optionaldpb_size?:number
Specifies the DPB size used for encoding (0 means automatic)
extra_sei?
optionalextra_sei?:boolean
Pass on extra SEI data (e.g. a53 cc) to be included in the bitstream
forced-idr?
optionalforced-idr?:boolean
If forcing keyframes, force them as IDR frames.
gpu?
optionalgpu?:"any"|"list"
Selects which NVENC capable GPU to use. First GPU is 0, second is 1, and so on.
highbitdepth?
optionalhighbitdepth?:boolean
Enable 10 bit encode for 8 bit input
init_qpB?
optionalinit_qpB?:number
Initial QP value for B frame
init_qpI?
optionalinit_qpI?:number
Initial QP value for I frame
init_qpP?
optionalinit_qpP?:number
Initial QP value for P frame
intra-refresh?
optionalintra-refresh?:boolean
Use Periodic Intra Refresh instead of IDR frames
ldkfs?
optionalldkfs?:number
Low delay key frame scale; Specifies the Scene Change frame size increase allowed in case of single frame VBV and CBR
level?
optionallevel?:"auto"|"2.0"|"2.1"|"3.0"|"3.1"|"4.0"|"4.1"|"5.0"|"5.1"|"5.2"|"6.0"|"6.1"|"6.2"|"1"|"2"|"3"|"4"|"5"|"6"|"1.0"
Set the encoding level restriction
lookahead_level?
optionallookahead_level?:"0"|"auto"|"1"|"2"|"3"
Specifies the lookahead level. Higher level may improve quality at the expense of performance.
max_slice_size?
optionalmax_slice_size?:number
Maximum encoded slice size in bytes
multipass?
optionalmultipass?:"disabled"|"qres"|"fullres"
Set the multipass encoding
no-scenecut?
optionalno-scenecut?:boolean
When lookahead is enabled, set this to 1 to disable adaptive I-frame insertion at scene cuts
nonref_p?
optionalnonref_p?:boolean
Set this to 1 to enable automatic insertion of non-reference P-frames
preset?
optionalpreset?:"fast"|"default"|"medium"|"slow"|"p1"|"p2"|"p3"|"p4"|"p5"|"p6"|"p7"|"hq"|"ll"|"lossless"|"hp"|"bd"|"llhq"|"llhp"|"losslesshp"
Set the encoding preset
profile?
optionalprofile?:"main10"|"main"|"rext"|"mv"
Set the encoding profile
qmax?
optionalqmax?:number
Specifies the maximum QP used for rate control
qmin?
optionalqmin?:number
Specifies the minimum QP used for rate control
qp?
optionalqp?:number
Constant quantization parameter rate control method
qp_cb_offset?
optionalqp_cb_offset?:number
Quantization parameter offset for cb channel
qp_cr_offset?
optionalqp_cr_offset?:number
Quantization parameter offset for cr channel
rc?
optionalrc?:"cbr"|"constqp"|"vbr"|"vbr_minqp"|"ll_2pass_quality"|"ll_2pass_size"|"vbr_2pass"|"cbr_ld_hq"|"cbr_hq"|"vbr_hq"
Override the preset rate-control
rc-lookahead?
optionalrc-lookahead?:number
Number of frames to look ahead for rate-control
rgb_mode?
optionalrgb_mode?:"disabled"|"yuv420"|"yuv444"
Configure how nvenc handles packed RGB input.
s12m_tc?
optionals12m_tc?:boolean
Use timecode (if available)
single-slice-intra-refresh?
optionalsingle-slice-intra-refresh?:boolean
Use single slice intra refresh
spatial_aq?
optionalspatial_aq?:boolean
set to 1 to enable Spatial AQ
spatial-aq?
optionalspatial-aq?:boolean
set to 1 to enable Spatial AQ
split_encode_mode?
optionalsplit_encode_mode?:"auto"|"2"|"3"|"4"|"disabled"|"forced"
Specifies the split encoding mode
strict_gop?
optionalstrict_gop?:boolean
Set 1 to minimize GOP-to-GOP rate fluctuations
surfaces?
optionalsurfaces?:number
Number of concurrent surfaces
temporal_aq?
optionaltemporal_aq?:boolean
set to 1 to enable Temporal AQ
temporal-aq?
optionaltemporal-aq?:boolean
set to 1 to enable Temporal AQ
tf_level?
optionaltf_level?:"0"|"4"
Specifies the strength of the temporal filtering
tier?
optionaltier?:"main"|"high"
Set the encoding tier
tune?
optionaltune?:"hq"|"uhq"|"ll"|"ull"|"lossless"
Set the encoding tuning info
udu_sei?
optionaludu_sei?:boolean
Pass on user data unregistered SEI if available
unidir_b?
optionalunidir_b?:boolean
Enable use of unidirectional B-Frames.
weighted_pred?
optionalweighted_pred?:number
Set 1 to enable weighted prediction
zerolatency?
optionalzerolatency?:boolean
Set 1 to indicate zero latency operation (no reordering delay)
See
https://ffmpeg.org/ffmpeg-codecs.html#hevc_005fnvenc
hevc_qsv
hevc_qsv:
object
Defined in: src/constants/options.ts:1918
HEVC (Intel Quick Sync Video acceleration)
adaptive_b?
optionaladaptive_b?:number
Adaptive B-frame placement
adaptive_i?
optionaladaptive_i?:number
Adaptive I-frame placement
async_depth?
optionalasync_depth?:number
Maximum processing parallelism
aud?
optionalaud?:boolean
Insert the Access Unit Delimiter NAL
avbr_accuracy?
optionalavbr_accuracy?:number
Accuracy of the AVBR ratecontrol (unit of tenth of percent)
avbr_convergence?
optionalavbr_convergence?:number
Convergence of the AVBR ratecontrol (unit of 100 frames)
b_strategy?
optionalb_strategy?:number
Strategy to choose between I/P/B-frames
dblk_idc?
optionaldblk_idc?:number
This option disable deblocking. It has value in range 0~2.
dual_gfx?
optionaldual_gfx?:"off"|"on"|"adaptive"
Prefer processing on both iGfx and dGfx simultaneously
extbrc?
optionalextbrc?:number
Extended bitrate control
forced_idr?
optionalforced_idr?:boolean
Forcing I frames as IDR frames
gpb?
optionalgpb?:boolean
1: GPB (generalized P/B frame); 0: regular P frame
idr_interval?
optionalidr_interval?:"begin_only"
Distance (in I-frames) between IDR frames
int_ref_cycle_dist?
optionalint_ref_cycle_dist?:number
Distance between the beginnings of the intra-refresh cycles in frames
int_ref_cycle_size?
optionalint_ref_cycle_size?:number
Number of frames in the intra refresh cycle
int_ref_qp_delta?
optionalint_ref_qp_delta?:number
QP difference for the refresh MBs
int_ref_type?
optionalint_ref_type?:"none"|"slice"|"vertical"|"horizontal"
Intra refresh type. B frames should be set to 0
load_plugin?
optionalload_plugin?:"none"|"hevc_sw"|"hevc_hw"
A user plugin to load in an internal session
load_plugins?
optionalload_plugins?:string
A :-separate list of hexadecimal plugin UIDs to load in an internal session
look_ahead_depth?
optionallook_ahead_depth?:number
Depth of look ahead in number frames, available when extbrc option is enabled
low_delay_brc?
optionallow_delay_brc?:boolean
Allow to strictly obey avg frame size
low_power?
optionallow_power?:boolean
enable low power mode(experimental: many limitations by mfx version, BRC modes, etc.)
main10sp?
optionalmain10sp?:boolean
This profile allow to encode 10 bit single still picture
max_frame_size?
optionalmax_frame_size?:number
Maximum encoded frame size in bytes
max_frame_size_i?
optionalmax_frame_size_i?:number
Maximum encoded I frame size in bytes
max_frame_size_p?
optionalmax_frame_size_p?:number
Maximum encoded P frame size in bytes
max_qp_b?
optionalmax_qp_b?:number
Maximum video quantizer scale for B frame
max_qp_i?
optionalmax_qp_i?:number
Maximum video quantizer scale for I frame
max_qp_p?
optionalmax_qp_p?:number
Maximum video quantizer scale for P frame
max_slice_size?
optionalmax_slice_size?:number
Maximum encoded slice size in bytes
mbbrc?
optionalmbbrc?:number
MB level bitrate control
min_qp_b?
optionalmin_qp_b?:number
Minimum video quantizer scale for B frame
min_qp_i?
optionalmin_qp_i?:number
Minimum video quantizer scale for I frame
min_qp_p?
optionalmin_qp_p?:number
Minimum video quantizer scale for P frame
p_strategy?
optionalp_strategy?:number
Enable P-pyramid: 0-default 1-simple 2-pyramid(bf need to be set to 0).
pic_timing_sei?
optionalpic_timing_sei?:boolean
Insert picture timing SEI with pic_struct_syntax element
preset?
optionalpreset?:"fast"|"medium"|"slow"|"veryfast"|"faster"|"slower"|"veryslow"
profile?
optionalprofile?:"unknown"|"main10"|"main"|"rext"|"mainsp"|"scc"
qsv_params?
optionalqsv_params?:string
Set QSV encoder parameters as key1=value1:key2=value2:...
rdo?
optionalrdo?:number
Enable rate distortion optimization
recovery_point_sei?
optionalrecovery_point_sei?:number
Insert recovery point SEI messages
scenario?
optionalscenario?:"unknown"|"displayremoting"|"videoconference"|"archive"|"livestreaming"|"cameracapture"|"videosurveillance"|"gamestreaming"|"remotegaming"
A hint to encoder about the scenario for the encoding session
skip_frame?
optionalskip_frame?:"no_skip"|"insert_dummy"|"insert_nothing"|"brc_only"
Allow frame skipping
tier?
optionaltier?:"main"|"high"
Set the encoding tier (only level >= 4 can support high tier)
tile_cols?
optionaltile_cols?:number
Number of columns for tiled encoding
tile_rows?
optionaltile_rows?:number
Number of rows for tiled encoding
transform_skip?
optionaltransform_skip?:number
Turn this option ON to enable transformskip
See
https://ffmpeg.org/ffmpeg-codecs.html#hevc_005fqsv
hevc_vaapi
hevc_vaapi:
object
Defined in: src/constants/options.ts:2016
H.265/HEVC (VAAPI)
async_depth?
optionalasync_depth?:number
Maximum processing parallelism.
aud?
optionalaud?:boolean
Include AUD
b_depth?
optionalb_depth?:number
Maximum B-frame reference depth
blbrc?
optionalblbrc?:boolean
Block level based bitrate control
idr_interval?
optionalidr_interval?:number
Distance (in I-frames) between key frames
level?
optionallevel?:"2.1"|"3.1"|"4.1"|"5.1"|"5.2"|"6.1"|"6.2"|"1"|"2"|"3"|"4"|"5"|"6"
Set level (general_level_idc)
low_power?
optionallow_power?:boolean
Use low-power encoding mode (only available on some platforms;
max_frame_size?
optionalmax_frame_size?:number
Maximum frame size (in bytes)
profile?
optionalprofile?:"main10"|"main"|"rext"
Set profile (general_profile_idc)
qp?
optionalqp?:number
Constant QP (for P-frames; scaled by qfactor/qoffset for I/B)
rc_mode?
optionalrc_mode?:"auto"|"CQP"|"CBR"|"VBR"|"QVBR"|"ICQ"|"AVBR"
Set rate control mode
sei?
optionalsei?:string&object|"a53_cc"|"hdr"
Set SEI to include
tier?
optionaltier?:"main"|"high"
Set tier (general_tier_flag)
tiles?
optionaltiles?:string
Tile columns x rows
See
https://ffmpeg.org/ffmpeg-codecs.html#hevc_005fvaapi
hevc_videotoolbox
hevc_videotoolbox:
object
Defined in: src/constants/options.ts:2050
VideoToolbox H.265 Encoder
allow_sw?
optionalallow_sw?:boolean
Allow software encoding
alpha_quality?
optionalalpha_quality?:number
Compression quality for the alpha channel
constant_bit_rate?
optionalconstant_bit_rate?:boolean
Require constant bit rate (macOS 13 or newer)
frames_after?
optionalframes_after?:boolean
Other frames will come after the frames in this session. This helps smooth concatenation issues.
frames_before?
optionalframes_before?:boolean
Other frames will come before the frames in this session. This helps smooth concatenation issues.
max_ref_frames?
optionalmax_ref_frames?:number
Sets the maximum number of reference frames. This only has an effect when the value is less than the maximum allowed by the profile/level.
power_efficient?
optionalpower_efficient?:number
Set to 1 to enable more power-efficient encoding if supported.
prio_speed?
optionalprio_speed?:boolean
prioritize encoding speed
profile?
optionalprofile?:"main10"|"main"|"rext"|"main42210"
Profile
realtime?
optionalrealtime?:boolean
Hint that encoding should happen in real-time if not faster (e.g. capturing from camera).
require_sw?
optionalrequire_sw?:boolean
Require software encoding
spatial_aq?
optionalspatial_aq?:number
Set to 1 to enable spatial AQ if supported.
See
https://ffmpeg.org/ffmpeg-codecs.html#hevc_005fvideotoolbox
hevc_vulkan
hevc_vulkan:
object
Defined in: src/constants/options.ts:2080
H.265/HEVC (Vulkan)
async_depth?
optionalasync_depth?:number
Maximum processing parallelism.
b_depth?
optionalb_depth?:number
Maximum B-frame reference depth
content?
optionalcontent?:string
Select content type
idr_interval?
optionalidr_interval?:number
Distance (in I-frames) between key frames
level?
optionallevel?:"2.1"|"3.1"|"4.1"|"5.1"|"5.2"|"6.1"|"6.2"|"1"|"2"|"3"|"4"|"5"|"6"
Set level (general_level_idc)
profile?
optionalprofile?:"main10"|"main"|"rext"
Set profile (profile_idc and constraint_set*_flag)
qp?
optionalqp?:number
Use an explicit constant quantizer for the whole stream
quality?
optionalquality?:number
Set encode quality (trades off against speed, higher is slower)
rc_mode?
optionalrc_mode?:number
Select rate control type
tier?
optionaltier?:"main"|"high"
Set tier (general_tier_flag)
tune?
optionaltune?:number
Select tuning type
units?
optionalunits?:string
Set units to include
usage?
optionalusage?:string
Select usage type
See
https://ffmpeg.org/ffmpeg-codecs.html#hevc_005fvulkan
huffyuv
huffyuv:
object
Defined in: src/constants/options.ts:2112
Huffyuv / HuffYUV
non_deterministic?
optionalnon_deterministic?:boolean
Allow multithreading for e.g. context=1 at the expense of determinism
pred?
optionalpred?:"left"|"plane"|"median"
Prediction method
See
https://ffmpeg.org/ffmpeg-codecs.html#huffyuv
jpeg2000
jpeg2000:
object
Defined in: src/constants/options.ts:2122
JPEG 2000
eph?
optionaleph?:number
EPH marker
format?
optionalformat?:"j2k"|"jp2"
Codec Format
layer_rates?
optionallayer_rates?:string
Layer Rates
pred?
optionalpred?:"dwt97int"|"dwt53"
DWT Type
prog?
optionalprog?:"lrcp"|"rlcp"|"rpcl"|"pcrl"|"cprl"
Progression Order
sop?
optionalsop?:number
SOP marker
tile_height?
optionaltile_height?:number
Tile Height
tile_width?
optionaltile_width?:number
Tile Width
See
https://ffmpeg.org/ffmpeg-codecs.html#jpeg2000
jpegls
jpegls:
object
Defined in: src/constants/options.ts:2144
JPEG-LS
pred?
optionalpred?:"left"|"plane"|"median"
Prediction method
See
https://ffmpeg.org/ffmpeg-codecs.html#jpegls
libaom-av1
libaom-av1:
object
Defined in: src/constants/options.ts:2152
libaom AV1
aom-params?
optionalaom-params?:string
Set libaom options using a :-separated list of key=value pairs
aq-mode?
optionalaq-mode?:"none"|"variance"|"complexity"|"cyclic"
adaptive quantization mode
arnr-max-frames?
optionalarnr-max-frames?:number
altref noise reduction max frame count
arnr-strength?
optionalarnr-strength?:number
altref noise reduction filter strength
auto-alt-ref?
optionalauto-alt-ref?:number
Enable use of alternate reference
cpu-used?
optionalcpu-used?:number
Quality/Speed ratio modifier
crf?
optionalcrf?:number
Select the quality for constant quality mode
denoise-block-size?
optionaldenoise-block-size?:number
Denoise block size
denoise-noise-level?
optionaldenoise-noise-level?:number
Amount of noise to be removed
dolbyvision?
optionaldolbyvision?:"auto"
Enable Dolby Vision RPU coding
drop-threshold?
optionaldrop-threshold?:number
Frame drop threshold
enable-1to4-partitions?
optionalenable-1to4-partitions?:boolean
Enable 1:4/4:1 partitions
enable-ab-partitions?
optionalenable-ab-partitions?:boolean
Enable ab shape partitions
enable-angle-delta?
optionalenable-angle-delta?:boolean
Enable angle delta intra prediction
enable-cdef?
optionalenable-cdef?:boolean
Enable CDEF filtering
enable-cfl-intra?
optionalenable-cfl-intra?:boolean
Enable chroma predicted from luma intra prediction
enable-diff-wtd-comp?
optionalenable-diff-wtd-comp?:boolean
Enable difference-weighted compound
enable-dist-wtd-comp?
optionalenable-dist-wtd-comp?:boolean
Enable distance-weighted compound
enable-dual-filter?
optionalenable-dual-filter?:boolean
Enable dual filter
enable-filter-intra?
optionalenable-filter-intra?:boolean
Enable filter intra predictor
enable-flip-idtx?
optionalenable-flip-idtx?:boolean
Enable extended transform type
enable-global-motion?
optionalenable-global-motion?:boolean
Enable global motion
enable-interinter-wedge?
optionalenable-interinter-wedge?:boolean
Enable interinter wedge compound
enable-interintra-comp?
optionalenable-interintra-comp?:boolean
Enable interintra compound
enable-interintra-wedge?
optionalenable-interintra-wedge?:boolean
Enable interintra wedge compound
enable-intra-edge-filter?
optionalenable-intra-edge-filter?:boolean
Enable intra edge filter
enable-intrabc?
optionalenable-intrabc?:boolean
Enable intra block copy prediction mode
enable-masked-comp?
optionalenable-masked-comp?:boolean
Enable masked compound
enable-obmc?
optionalenable-obmc?:boolean
Enable obmc
enable-onesided-comp?
optionalenable-onesided-comp?:boolean
Enable one sided compound
enable-paeth-intra?
optionalenable-paeth-intra?:boolean
Enable paeth predictor in intra prediction
enable-palette?
optionalenable-palette?:boolean
Enable palette prediction mode
enable-rect-partitions?
optionalenable-rect-partitions?:boolean
Enable rectangular partitions
enable-reduced-reference-set?
optionalenable-reduced-reference-set?:boolean
Use reduced set of single and compound references
enable-ref-frame-mvs?
optionalenable-ref-frame-mvs?:boolean
Enable temporal mv prediction
enable-restoration?
optionalenable-restoration?:boolean
Enable Loop Restoration filtering
enable-smooth-interintra?
optionalenable-smooth-interintra?:boolean
Enable smooth interintra mode
enable-smooth-intra?
optionalenable-smooth-intra?:boolean
Enable smooth intra prediction mode
enable-tx64?
optionalenable-tx64?:boolean
Enable 64-pt transform
error-resilience?
optionalerror-resilience?:string&object|"default"
Error resilience configuration
frame-parallel?
optionalframe-parallel?:boolean
Enable frame parallel decodability features
lag-in-frames?
optionallag-in-frames?:number
Number of frames to look ahead at for
maxsection-pct?
optionalmaxsection-pct?:number
GOP max bitrate (% of target)
minsection-pct?
optionalminsection-pct?:number
GOP min bitrate (% of target)
overshoot-pct?
optionalovershoot-pct?:number
Datarate overshoot (max) target (%)
reduced-tx-type-set?
optionalreduced-tx-type-set?:boolean
Use reduced set of transform types
row-mt?
optionalrow-mt?:boolean
Enable row based multi-threading
static-thresh?
optionalstatic-thresh?:number
A change threshold on blocks below which they will be skipped by the encoder
still-picture?
optionalstill-picture?:boolean
Encode in single frame mode (typically used for still AVIF images).
tile-columns?
optionaltile-columns?:number
Log2 of number of tile columns to use
tile-rows?
optionaltile-rows?:number
Log2 of number of tile rows to use
tiles?
optionaltiles?:string
Tile columns x rows
tune?
optionaltune?:"psnr"|"ssim"
The metric that the encoder tunes for. Automatically chosen by the encoder by default
undershoot-pct?
optionalundershoot-pct?:number
Datarate undershoot (min) target (%)
usage?
optionalusage?:"good"|"realtime"|"allintra"
Quality and compression efficiency vs speed trade-off
use-inter-dct-only?
optionaluse-inter-dct-only?:boolean
Use DCT only for INTER modes
use-intra-dct-only?
optionaluse-intra-dct-only?:boolean
Use DCT only for INTRA modes
use-intra-default-tx-only?
optionaluse-intra-default-tx-only?:boolean
Use default-transform only for INTRA modes
See
https://ffmpeg.org/ffmpeg-codecs.html#libaom_002dav1
libcodec2
libcodec2:
object
Defined in: src/constants/options.ts:2274
codec2 encoder using libcodec2
mode?
optionalmode?:"3200"|"2400"|"1600"|"1400"|"1300"|"1200"|"700"|"700B"|"700C"
codec2 mode
See
https://ffmpeg.org/ffmpeg-codecs.html#libcodec2
libfdk_aac
libfdk_aac:
object
Defined in: src/constants/options.ts:2282
Fraunhofer FDK AAC
afterburner?
optionalafterburner?:number
Afterburner (improved quality)
comp_profile?
optionalcomp_profile?:number
The desired compression profile for AAC DRC
comp_target_ref?
optionalcomp_target_ref?:number
Expected target reference level at decoder side in dB (for clipping prevention/limiter)
drc_profile?
optionaldrc_profile?:number
The desired compression profile for AAC DRC
drc_target_ref?
optionaldrc_target_ref?:number
Expected target reference level at decoder side in dB (for clipping prevention/limiter)
eld_sbr?
optionaleld_sbr?:number
Enable SBR for ELD (for SBR in other configurations, use the -profile parameter)
eld_v2?
optionaleld_v2?:number
Enable ELDv2 (LD-MPS extension for ELD stereo signals)
frame_length?
optionalframe_length?:number
The desired frame length
header_period?
optionalheader_period?:number
StreamMuxConfig and PCE repetition period (in frames)
latm?
optionallatm?:number
Output LATM/LOAS encapsulated data
prog_ref?
optionalprog_ref?:number
The program reference level or dialog level in dB
signaling?
optionalsignaling?:"default"|"implicit"|"explicit_sbr"|"explicit_hierarchical"
SBR/PS signaling style
vbr?
optionalvbr?:number
VBR mode (1-5)
See
https://ffmpeg.org/ffmpeg-codecs.html#libfdk_005faac
libilbc
libilbc:
object
Defined in: src/constants/options.ts:2314
iLBC (Internet Low Bitrate Codec)
mode?
optionalmode?:number
iLBC mode (20 or 30 ms frames)
See
https://ffmpeg.org/ffmpeg-codecs.html#libilbc
libjxl
libjxl:
object
Defined in: src/constants/options.ts:2322
libjxl JPEG XL
distance?
optionaldistance?:number
Maximum Butteraugli distance (quality setting,
effort?
optionaleffort?:number
Encoding effort
modular?
optionalmodular?:number
Force modular mode
xyb?
optionalxyb?:number
Use XYB-encoding for lossy images
See
https://ffmpeg.org/ffmpeg-codecs.html#libjxl
libjxl_anim
libjxl_anim:
object
Defined in: src/constants/options.ts:2336
libjxl JPEG XL animated
distance?
optionaldistance?:number
Maximum Butteraugli distance (quality setting,
effort?
optionaleffort?:number
Encoding effort
modular?
optionalmodular?:number
Force modular mode
xyb?
optionalxyb?:number
Use XYB-encoding for lossy images
See
https://ffmpeg.org/ffmpeg-codecs.html#libjxl_005fanim
libkvazaar
libkvazaar:
object
Defined in: src/constants/options.ts:2350
libkvazaar H.265 / HEVC
kvazaar-params?
optionalkvazaar-params?:string
Set kvazaar parameters as a comma-separated list of key=value pairs.
See
https://ffmpeg.org/ffmpeg-codecs.html#libkvazaar
liblc3
liblc3:
object
Defined in: src/constants/options.ts:2358
LC3 (Low Complexity Communication Codec)
frame_duration?
optionalframe_duration?:number
Duration of a frame in milliseconds
high_resolution?
optionalhigh_resolution?:boolean
Enable High-Resolution mode (48 KHz or 96 KHz)
See
https://ffmpeg.org/ffmpeg-codecs.html#liblc3
libmp3lame
libmp3lame:
object
Defined in: src/constants/options.ts:2368
libmp3lame MP3 (MPEG audio layer 3)
abr?
optionalabr?:boolean
use ABR
copyright?
optionalcopyright?:boolean
set copyright flag
joint_stereo?
optionaljoint_stereo?:boolean
use joint stereo
original?
optionaloriginal?:boolean
set original flag
reservoir?
optionalreservoir?:boolean
use bit reservoir
See
https://ffmpeg.org/ffmpeg-codecs.html#libmp3lame
liboapv
liboapv:
object
Defined in: src/constants/options.ts:2384
liboapv APV
oapv-params?
optionaloapv-params?:string
Override the apv configuration using a :-separated list of key=value parameters
preset?
optionalpreset?:"fast"|"default"|"medium"|"slow"|"fastest"|"placebo"
Encoding preset for setting encoding speed (optimization level control)
qp?
optionalqp?:number
Quantization parameter value for CQP rate control mode
See
https://ffmpeg.org/ffmpeg-codecs.html#liboapv
libopencore_amrnb
libopencore_amrnb:
object
Defined in: src/constants/options.ts:2396
OpenCORE AMR-NB (Adaptive Multi-Rate Narrow-Band)
dtx?
optionaldtx?:number
Allow DTX (generate comfort noise)
See
https://ffmpeg.org/ffmpeg-codecs.html#libopencore_005famrnb
libopenh264
libopenh264:
object
Defined in: src/constants/options.ts:2404
OpenH264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
allow_skip_frames?
optionalallow_skip_frames?:boolean
allow skipping frames to hit the target bitrate
coder?
optionalcoder?:"default"|"ac"|"cavlc"|"cabac"|"vlc"
Coder type
loopfilter?
optionalloopfilter?:number
enable loop filter
max_nal_size?
optionalmax_nal_size?:number
set maximum NAL size in bytes
profile?
optionalprofile?:"main"|"high"|"constrained_baseline"
set profile restrictions
rc_mode?
optionalrc_mode?:"buffer"|"quality"|"off"|"bitrate"|"timestamp"
Select rate control mode
See
https://ffmpeg.org/ffmpeg-codecs.html#libopenh264
libopenjpeg
libopenjpeg:
object
Defined in: src/constants/options.ts:2422
OpenJPEG JPEG 2000
cinema_mode?
optionalcinema_mode?:"off"|"2k_24"|"2k_48"|"4k_24"
Digital Cinema
disto_alloc?
optionaldisto_alloc?:number
fixed_quality?
optionalfixed_quality?:number
format?
optionalformat?:"j2k"|"jp2"
Codec Format
irreversible?
optionalirreversible?:number
numresolution?
optionalnumresolution?:number
profile?
optionalprofile?:"jpeg2000"|"cinema2k"|"cinema4k"
prog_order?
optionalprog_order?:"lrcp"|"rlcp"|"rpcl"|"pcrl"|"cprl"
Progression Order
See
https://ffmpeg.org/ffmpeg-codecs.html#libopenjpeg
libopus
libopus:
object
Defined in: src/constants/options.ts:2439
libopus Opus
application?
optionalapplication?:"audio"|"voip"|"lowdelay"
Intended application type
apply_phase_inv?
optionalapply_phase_inv?:boolean
Apply intensity stereo phase inversion
dtx?
optionaldtx?:boolean
Enable DTX (Discontinuous transmission)
fec?
optionalfec?:boolean
Enable inband FEC. Expected packet loss must be non-zero
frame_duration?
optionalframe_duration?:number
Duration of a frame in milliseconds
mapping_family?
optionalmapping_family?:number
Channel Mapping Family
packet_loss?
optionalpacket_loss?:number
Expected packet loss percentage
vbr?
optionalvbr?:"off"|"on"|"constrained"
Variable bit rate mode
See
https://ffmpeg.org/ffmpeg-codecs.html#libopus
librav1e
librav1e:
object
Defined in: src/constants/options.ts:2461
librav1e AV1
qp?
optionalqp?:number
use constant quantizer mode
rav1e-params?
optionalrav1e-params?:string
set the rav1e configuration using a :-separated list of key=value parameters
speed?
optionalspeed?:number
what speed preset to use
tile-columns?
optionaltile-columns?:number
number of tiles columns to encode with
tile-rows?
optionaltile-rows?:number
number of tiles rows to encode with
tiles?
optionaltiles?:number
number of tiles encode with
See
https://ffmpeg.org/ffmpeg-codecs.html#librav1e
libspeex
libspeex:
object
Defined in: src/constants/options.ts:2479
libspeex Speex
abr?
optionalabr?:number
Use average bit rate
cbr_quality?
optionalcbr_quality?:number
Set quality value (0 to 10) for CBR
dtx?
optionaldtx?:number
Discontinuous Transmission
frames_per_packet?
optionalframes_per_packet?:number
Number of frames to encode in each packet
vad?
optionalvad?:number
Voice Activity Detection
See
https://ffmpeg.org/ffmpeg-codecs.html#libspeex
libsvtav1
libsvtav1:
object
Defined in: src/constants/options.ts:2495
SVT-AV1(Scalable Video Technology for AV1) encoder
crf?
optionalcrf?:number
Constant Rate Factor value
dolbyvision?
optionaldolbyvision?:"auto"
Enable Dolby Vision RPU coding
preset?
optionalpreset?:number
Encoding preset
qp?
optionalqp?:number
Initial Quantizer level value
svtav1-params?
optionalsvtav1-params?:string
Set the SVT-AV1 configuration using a :-separated list of key=value parameters
See
https://ffmpeg.org/ffmpeg-codecs.html#libsvtav1
libsvtjpegxs
libsvtjpegxs:
object
Defined in: src/constants/options.ts:2511
SVT JPEG XS(Scalable Video Technology for JPEG XS) encoder
coding-sigf?
optionalcoding-sigf?:boolean
Enable Significance coding
coding-signs?
optionalcoding-signs?:"fast"|"full"|"disable"
Enable Signs handling strategy
coding-vpred?
optionalcoding-vpred?:"disable"|"no_residuals"|"no_coeffs"
Enable Vertical Prediction coding
decomp_h?
optionaldecomp_h?:number
horizontal decomposition level
decomp_v?
optionaldecomp_v?:number
vertical decomposition level
quantization?
optionalquantization?:"deadzone"|"uniform"
Quantization algorithm
See
https://ffmpeg.org/ffmpeg-codecs.html#libsvtjpegxs
libtheora
libtheora:
object
Defined in: src/constants/options.ts:2529
libtheora Theora
speed_level?
optionalspeed_level?:number
Sets the encoding speed level
See
https://ffmpeg.org/ffmpeg-codecs.html#libtheora
libtwolame
libtwolame:
object
Defined in: src/constants/options.ts:2537
libtwolame MP2 (MPEG audio layer 2)
copyright?
optionalcopyright?:number
set MPEG Audio Copyright flag
energy_levels?
optionalenergy_levels?:number
enable energy levels
error_protection?
optionalerror_protection?:number
enable CRC error protection
mode?
optionalmode?:"auto"|"stereo"|"joint_stereo"|"dual_channel"|"mono"
Mpeg Mode
original?
optionaloriginal?:number
set MPEG Audio Original flag
psymodel?
optionalpsymodel?:number
Psychoacoustic Model
verbosity?
optionalverbosity?:number
set library optput level (0-10)
See
https://ffmpeg.org/ffmpeg-codecs.html#libtwolame
libvo_amrwbenc
libvo_amrwbenc:
object
Defined in: src/constants/options.ts:2557
Android VisualOn AMR-WB (Adaptive Multi-Rate Wide-Band)
dtx?
optionaldtx?:number
Allow DTX (generate comfort noise)
See
https://ffmpeg.org/ffmpeg-codecs.html#libvo_005famrwbenc
libvorbis
libvorbis:
object
Defined in: src/constants/options.ts:2565
libvorbis
iblock?
optionaliblock?:number
Sets the impulse block bias
See
https://ffmpeg.org/ffmpeg-codecs.html#libvorbis
libvpx
libvpx:
object
Defined in: src/constants/options.ts:2573
libvpx VP8
arnr_max_frames?
optionalarnr_max_frames?:number
altref noise reduction max frame count
arnr_strength?
optionalarnr_strength?:number
altref noise reduction filter strength
arnr_type?
optionalarnr_type?:number
altref noise reduction filter type
arnr-maxframes?
optionalarnr-maxframes?:number
altref noise reduction max frame count
arnr-strength?
optionalarnr-strength?:number
altref noise reduction filter strength
arnr-type?
optionalarnr-type?:"backward"|"forward"|"centered"
altref noise reduction filter type
auto-alt-ref?
optionalauto-alt-ref?:number
Enable use of alternate reference
cpu-used?
optionalcpu-used?:number
Quality/Speed ratio modifier
crf?
optionalcrf?:number
Select the quality for constant quality mode
deadline?
optionaldeadline?:"good"|"realtime"|"best"
Time to spend encoding, in microseconds.
drop-threshold?
optionaldrop-threshold?:number
Frame drop threshold
error-resilient?
optionalerror-resilient?:string&object|"default"|"partitions"
Error resilience configuration
lag-in-frames?
optionallag-in-frames?:number
Number of frames to look ahead for
max-intra-rate?
optionalmax-intra-rate?:number
Maximum I-frame bitrate (pct) 0=unlimited
noise-sensitivity?
optionalnoise-sensitivity?:number
Noise sensitivity
overshoot-pct?
optionalovershoot-pct?:number
Datarate overshoot (max) target (%)
quality?
optionalquality?:"good"|"realtime"|"best"
rc_lookahead?
optionalrc_lookahead?:number
Number of frames to look ahead for alternate reference frame selection
screen-content-mode?
optionalscreen-content-mode?:number
Encoder screen content mode
sharpness?
optionalsharpness?:number
Increase sharpness at the expense of lower PSNR
speed?
optionalspeed?:number
static-thresh?
optionalstatic-thresh?:number
A change threshold on blocks below which they will be skipped by the encoder
ts-parameters?
optionalts-parameters?:string
Temporal scaling configuration using a :-separated list of key=value parameters
tune?
optionaltune?:"psnr"|"ssim"
Tune the encoding to a specific scenario
undershoot-pct?
optionalundershoot-pct?:number
Datarate undershoot (min) target (%)
vp8flags?
optionalvp8flags?:string&object|"error_resilient"|"altref"
See
https://ffmpeg.org/ffmpeg-codecs.html#libvpx
libvpx-vp9
libvpx-vp9:
object
Defined in: src/constants/options.ts:2628
libvpx VP9
aq-mode?
optionalaq-mode?:"none"|"variance"|"complexity"|"cyclic"|"equator360"
adaptive quantization mode
arnr_max_frames?
optionalarnr_max_frames?:number
altref noise reduction max frame count
arnr_strength?
optionalarnr_strength?:number
altref noise reduction filter strength
arnr_type?
optionalarnr_type?:number
altref noise reduction filter type
arnr-maxframes?
optionalarnr-maxframes?:number
altref noise reduction max frame count
arnr-strength?
optionalarnr-strength?:number
altref noise reduction filter strength
arnr-type?
optionalarnr-type?:"backward"|"forward"|"centered"
altref noise reduction filter type
auto-alt-ref?
optionalauto-alt-ref?:number
Enable use of alternate reference
corpus-complexity?
optionalcorpus-complexity?:number
corpus vbr complexity midpoint
cpu-used?
optionalcpu-used?:number
Quality/Speed ratio modifier
crf?
optionalcrf?:number
Select the quality for constant quality mode
deadline?
optionaldeadline?:"good"|"realtime"|"best"
Time to spend encoding, in microseconds.
drop-threshold?
optionaldrop-threshold?:number
Frame drop threshold
enable-tpl?
optionalenable-tpl?:boolean
Enable temporal dependency model
error-resilient?
optionalerror-resilient?:string&object|"default"|"partitions"
Error resilience configuration
frame-parallel?
optionalframe-parallel?:boolean
Enable frame parallel decodability features
lag-in-frames?
optionallag-in-frames?:number
Number of frames to look ahead for
level?
optionallevel?:number
Specify level
lossless?
optionallossless?:number
Lossless mode
max-intra-rate?
optionalmax-intra-rate?:number
Maximum I-frame bitrate (pct) 0=unlimited
min-gf-interval?
optionalmin-gf-interval?:number
Minimum golden/alternate reference frame interval
noise-sensitivity?
optionalnoise-sensitivity?:number
Noise sensitivity
overshoot-pct?
optionalovershoot-pct?:number
Datarate overshoot (max) target (%)
quality?
optionalquality?:"good"|"realtime"|"best"
rc_lookahead?
optionalrc_lookahead?:number
Number of frames to look ahead for alternate reference frame selection
row-mt?
optionalrow-mt?:boolean
Row based multi-threading
sharpness?
optionalsharpness?:number
Increase sharpness at the expense of lower PSNR
speed?
optionalspeed?:number
static-thresh?
optionalstatic-thresh?:number
A change threshold on blocks below which they will be skipped by the encoder
tile-columns?
optionaltile-columns?:number
Number of tile columns to use, log2
tile-rows?
optionaltile-rows?:number
Number of tile rows to use, log2
ts-parameters?
optionalts-parameters?:string
Temporal scaling configuration using a :-separated list of key=value parameters
tune?
optionaltune?:"psnr"|"ssim"
Tune the encoding to a specific scenario
tune-content?
optionaltune-content?:"default"|"film"|"screen"
Tune content type
undershoot-pct?
optionalundershoot-pct?:number
Datarate undershoot (min) target (%)
vp8flags?
optionalvp8flags?:string&object|"error_resilient"|"altref"
See
https://ffmpeg.org/ffmpeg-codecs.html#libvpx_002dvp9
libvvenc
libvvenc:
object
Defined in: src/constants/options.ts:2703
libvvenc H.266 / VVC
level?
optionallevel?:string
Specify level (as defined by Annex A)
passlogfile?
optionalpasslogfile?:string
Filename for 2 pass stats
period?
optionalperiod?:number
set (intra) refresh period in seconds
preset?
optionalpreset?:number
set encoding preset
qp?
optionalqp?:number
set quantization
qpa?
optionalqpa?:boolean
set subjective (perceptually motivated) optimization
stats?
optionalstats?:string
Filename for 2 pass stats
tier?
optionaltier?:number
set vvc tier
vvenc-params?
optionalvvenc-params?:string
set the vvenc configuration using a :-separated list of key=value parameters
See
https://ffmpeg.org/ffmpeg-codecs.html#libvvenc
libx262
libx262:
object
Defined in: src/constants/options.ts:2727
libx262 MPEG2VIDEO
8x8dct?
optional8x8dct?:boolean
High profile 8x8 transform.
a53cc?
optionala53cc?:boolean
Use A53 Closed Captions (if available)
aq-mode?
optionalaq-mode?:"none"|"variance"|"autovariance"|"autovariance-biased"
AQ method
aq-strength?
optionalaq-strength?:number
AQ strength. Reduces blocking and blurring in flat and textured areas.
aud?
optionalaud?:boolean
Use access unit delimiters.
avcintra-class?
optionalavcintra-class?:number
AVC-Intra class 50/100/200/300/480
b_strategy?
optionalb_strategy?:number
Strategy to choose between I/P/B-frames
b-bias?
optionalb-bias?:number
Influences how often B-frames are used
b-pyramid?
optionalb-pyramid?:"none"|"strict"|"normal"
Keep some B-frames as references.
bluray-compat?
optionalbluray-compat?:boolean
Bluray compatibility workarounds.
chromaoffset?
optionalchromaoffset?:number
QP difference between chroma and luma
coder?
optionalcoder?:"default"|"ac"|"cavlc"|"cabac"|"vlc"
Coder type
cplxblur?
optionalcplxblur?:number
Reduce fluctuations in QP (before curve compression)
crf?
optionalcrf?:number
Select the quality for constant quality mode
crf_max?
optionalcrf_max?:number
In CRF mode, prevents VBV from lowering quality beyond this point.
deblock?
optionaldeblock?:string
Loop filter parameters, in <alpha:beta> form.
direct-pred?
optionaldirect-pred?:"none"|"auto"|"spatial"|"temporal"
Direct MV prediction mode
fast-pskip?
optionalfast-pskip?:boolean
fastfirstpass?
optionalfastfirstpass?:boolean
Use fast settings when encoding first pass
forced-idr?
optionalforced-idr?:boolean
If forcing keyframes, force them as IDR frames.
intra-refresh?
optionalintra-refresh?:boolean
Use Periodic Intra Refresh instead of IDR frames.
level?
optionallevel?:string
Specify level (as defined by Annex A)
mb_info?
optionalmb_info?:boolean
Set mb_info data through AVSideData, only useful when used from the API
mbtree?
optionalmbtree?:boolean
Use macroblock tree ratecontrol.
me_method?
optionalme_method?:"hex"|"dia"|"umh"|"esa"|"tesa"
Set motion estimation method
mixed-refs?
optionalmixed-refs?:boolean
One reference per partition, as opposed to one reference per macroblock
motion-est?
optionalmotion-est?:"hex"|"dia"|"umh"|"esa"|"tesa"
Set motion estimation method
nal-hrd?
optionalnal-hrd?:"none"|"cbr"|"vbr"
Signal HRD information (requires vbv-bufsize;
noise_reduction?
optionalnoise_reduction?:number
Noise reduction
partitions?
optionalpartitions?:string
A comma-separated list of partitions to consider.
passlogfile?
optionalpasslogfile?:string
Filename for 2 pass stats
preset?
optionalpreset?:string
Set the encoding preset (cf. x264 --fullhelp)
profile?
optionalprofile?:string
Set profile restrictions (cf. x264 --fullhelp)
psy?
optionalpsy?:boolean
Use psychovisual optimizations.
psy-rd?
optionalpsy-rd?:string
Strength of psychovisual optimization, in <psy-rd>:<psy-trellis> format.
qp?
optionalqp?:number
Constant quantization parameter rate control method
rc-lookahead?
optionalrc-lookahead?:number
Number of frames to look ahead for frametype and ratecontrol
sc_threshold?
optionalsc_threshold?:number
Scene change threshold
slice-max-size?
optionalslice-max-size?:number
Limit the size of each slice in bytes
ssim?
optionalssim?:boolean
Calculate and print SSIM stats.
stats?
optionalstats?:string
Filename for 2 pass stats
tune?
optionaltune?:string
Tune the encoding params (cf. x264 --fullhelp)
udu_sei?
optionaludu_sei?:boolean
Use user data unregistered SEI if available
weightb?
optionalweightb?:boolean
Weighted prediction for B-frames.
weightp?
optionalweightp?:"none"|"simple"|"smart"
Weighted prediction analysis method.
wpredp?
optionalwpredp?:string
Weighted prediction for P-frames
x264-params?
optionalx264-params?:string
Override the x264 configuration using a :-separated list of key=value parameters
x264opts?
optionalx264opts?:string
x264 options
See
https://ffmpeg.org/ffmpeg-codecs.html#libx262
libx264
libx264:
object
Defined in: src/constants/options.ts:2828
libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
8x8dct?
optional8x8dct?:boolean
High profile 8x8 transform.
a53cc?
optionala53cc?:boolean
Use A53 Closed Captions (if available)
aq-mode?
optionalaq-mode?:"none"|"variance"|"autovariance"|"autovariance-biased"
AQ method
aq-strength?
optionalaq-strength?:number
AQ strength. Reduces blocking and blurring in flat and textured areas.
aud?
optionalaud?:boolean
Use access unit delimiters.
avcintra-class?
optionalavcintra-class?:number
AVC-Intra class 50/100/200/300/480
b_strategy?
optionalb_strategy?:number
Strategy to choose between I/P/B-frames
b-bias?
optionalb-bias?:number
Influences how often B-frames are used
b-pyramid?
optionalb-pyramid?:"none"|"strict"|"normal"
Keep some B-frames as references.
bluray-compat?
optionalbluray-compat?:boolean
Bluray compatibility workarounds.
chromaoffset?
optionalchromaoffset?:number
QP difference between chroma and luma
coder?
optionalcoder?:"default"|"ac"|"cavlc"|"cabac"|"vlc"
Coder type
cplxblur?
optionalcplxblur?:number
Reduce fluctuations in QP (before curve compression)
crf?
optionalcrf?:number
Select the quality for constant quality mode
crf_max?
optionalcrf_max?:number
In CRF mode, prevents VBV from lowering quality beyond this point.
deblock?
optionaldeblock?:string
Loop filter parameters, in <alpha:beta> form.
direct-pred?
optionaldirect-pred?:"none"|"auto"|"spatial"|"temporal"
Direct MV prediction mode
fast-pskip?
optionalfast-pskip?:boolean
fastfirstpass?
optionalfastfirstpass?:boolean
Use fast settings when encoding first pass
forced-idr?
optionalforced-idr?:boolean
If forcing keyframes, force them as IDR frames.
intra-refresh?
optionalintra-refresh?:boolean
Use Periodic Intra Refresh instead of IDR frames.
level?
optionallevel?:string
Specify level (as defined by Annex A)
mb_info?
optionalmb_info?:boolean
Set mb_info data through AVSideData, only useful when used from the API
mbtree?
optionalmbtree?:boolean
Use macroblock tree ratecontrol.
me_method?
optionalme_method?:"hex"|"dia"|"umh"|"esa"|"tesa"
Set motion estimation method
mixed-refs?
optionalmixed-refs?:boolean
One reference per partition, as opposed to one reference per macroblock
motion-est?
optionalmotion-est?:"hex"|"dia"|"umh"|"esa"|"tesa"
Set motion estimation method
nal-hrd?
optionalnal-hrd?:"none"|"cbr"|"vbr"
Signal HRD information (requires vbv-bufsize;
noise_reduction?
optionalnoise_reduction?:number
Noise reduction
partitions?
optionalpartitions?:string
A comma-separated list of partitions to consider.
passlogfile?
optionalpasslogfile?:string
Filename for 2 pass stats
preset?
optionalpreset?:string
Set the encoding preset (cf. x264 --fullhelp)
profile?
optionalprofile?:string
Set profile restrictions (cf. x264 --fullhelp)
psy?
optionalpsy?:boolean
Use psychovisual optimizations.
psy-rd?
optionalpsy-rd?:string
Strength of psychovisual optimization, in <psy-rd>:<psy-trellis> format.
qp?
optionalqp?:number
Constant quantization parameter rate control method
rc-lookahead?
optionalrc-lookahead?:number
Number of frames to look ahead for frametype and ratecontrol
sc_threshold?
optionalsc_threshold?:number
Scene change threshold
slice-max-size?
optionalslice-max-size?:number
Limit the size of each slice in bytes
ssim?
optionalssim?:boolean
Calculate and print SSIM stats.
stats?
optionalstats?:string
Filename for 2 pass stats
tune?
optionaltune?:string
Tune the encoding params (cf. x264 --fullhelp)
udu_sei?
optionaludu_sei?:boolean
Use user data unregistered SEI if available
weightb?
optionalweightb?:boolean
Weighted prediction for B-frames.
weightp?
optionalweightp?:"none"|"simple"|"smart"
Weighted prediction analysis method.
wpredp?
optionalwpredp?:string
Weighted prediction for P-frames
x264-params?
optionalx264-params?:string
Override the x264 configuration using a :-separated list of key=value parameters
x264opts?
optionalx264opts?:string
x264 options
See
https://ffmpeg.org/ffmpeg-codecs.html#libx264
libx264rgb
libx264rgb:
object
Defined in: src/constants/options.ts:2929
libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 RGB
8x8dct?
optional8x8dct?:boolean
High profile 8x8 transform.
a53cc?
optionala53cc?:boolean
Use A53 Closed Captions (if available)
aq-mode?
optionalaq-mode?:"none"|"variance"|"autovariance"|"autovariance-biased"
AQ method
aq-strength?
optionalaq-strength?:number
AQ strength. Reduces blocking and blurring in flat and textured areas.
aud?
optionalaud?:boolean
Use access unit delimiters.
avcintra-class?
optionalavcintra-class?:number
AVC-Intra class 50/100/200/300/480
b_strategy?
optionalb_strategy?:number
Strategy to choose between I/P/B-frames
b-bias?
optionalb-bias?:number
Influences how often B-frames are used
b-pyramid?
optionalb-pyramid?:"none"|"strict"|"normal"
Keep some B-frames as references.
bluray-compat?
optionalbluray-compat?:boolean
Bluray compatibility workarounds.
chromaoffset?
optionalchromaoffset?:number
QP difference between chroma and luma
coder?
optionalcoder?:"default"|"ac"|"cavlc"|"cabac"|"vlc"
Coder type
cplxblur?
optionalcplxblur?:number
Reduce fluctuations in QP (before curve compression)
crf?
optionalcrf?:number
Select the quality for constant quality mode
crf_max?
optionalcrf_max?:number
In CRF mode, prevents VBV from lowering quality beyond this point.
deblock?
optionaldeblock?:string
Loop filter parameters, in <alpha:beta> form.
direct-pred?
optionaldirect-pred?:"none"|"auto"|"spatial"|"temporal"
Direct MV prediction mode
fast-pskip?
optionalfast-pskip?:boolean
fastfirstpass?
optionalfastfirstpass?:boolean
Use fast settings when encoding first pass
forced-idr?
optionalforced-idr?:boolean
If forcing keyframes, force them as IDR frames.
intra-refresh?
optionalintra-refresh?:boolean
Use Periodic Intra Refresh instead of IDR frames.
level?
optionallevel?:string
Specify level (as defined by Annex A)
mb_info?
optionalmb_info?:boolean
Set mb_info data through AVSideData, only useful when used from the API
mbtree?
optionalmbtree?:boolean
Use macroblock tree ratecontrol.
me_method?
optionalme_method?:"hex"|"dia"|"umh"|"esa"|"tesa"
Set motion estimation method
mixed-refs?
optionalmixed-refs?:boolean
One reference per partition, as opposed to one reference per macroblock
motion-est?
optionalmotion-est?:"hex"|"dia"|"umh"|"esa"|"tesa"
Set motion estimation method
nal-hrd?
optionalnal-hrd?:"none"|"cbr"|"vbr"
Signal HRD information (requires vbv-bufsize;
noise_reduction?
optionalnoise_reduction?:number
Noise reduction
partitions?
optionalpartitions?:string
A comma-separated list of partitions to consider.
passlogfile?
optionalpasslogfile?:string
Filename for 2 pass stats
preset?
optionalpreset?:string
Set the encoding preset (cf. x264 --fullhelp)
profile?
optionalprofile?:string
Set profile restrictions (cf. x264 --fullhelp)
psy?
optionalpsy?:boolean
Use psychovisual optimizations.
psy-rd?
optionalpsy-rd?:string
Strength of psychovisual optimization, in <psy-rd>:<psy-trellis> format.
qp?
optionalqp?:number
Constant quantization parameter rate control method
rc-lookahead?
optionalrc-lookahead?:number
Number of frames to look ahead for frametype and ratecontrol
sc_threshold?
optionalsc_threshold?:number
Scene change threshold
slice-max-size?
optionalslice-max-size?:number
Limit the size of each slice in bytes
ssim?
optionalssim?:boolean
Calculate and print SSIM stats.
stats?
optionalstats?:string
Filename for 2 pass stats
tune?
optionaltune?:string
Tune the encoding params (cf. x264 --fullhelp)
udu_sei?
optionaludu_sei?:boolean
Use user data unregistered SEI if available
weightb?
optionalweightb?:boolean
Weighted prediction for B-frames.
weightp?
optionalweightp?:"none"|"simple"|"smart"
Weighted prediction analysis method.
wpredp?
optionalwpredp?:string
Weighted prediction for P-frames
x264-params?
optionalx264-params?:string
Override the x264 configuration using a :-separated list of key=value parameters
x264opts?
optionalx264opts?:string
x264 options
See
https://ffmpeg.org/ffmpeg-codecs.html#libx264rgb
libx265
libx265:
object
Defined in: src/constants/options.ts:3030
libx265 H.265 / HEVC
a53cc?
optionala53cc?:boolean
Use A53 Closed Captions (if available)
crf?
optionalcrf?:number
set the x265 crf
dolbyvision?
optionaldolbyvision?:"auto"
Enable Dolby Vision RPU coding
forced-idr?
optionalforced-idr?:boolean
if forcing keyframes, force them as IDR frames
preset?
optionalpreset?:string
set the x265 preset
profile?
optionalprofile?:string
set the x265 profile
qp?
optionalqp?:number
set the x265 qp
tune?
optionaltune?:string
set the x265 tune parameter
udu_sei?
optionaludu_sei?:boolean
Use user data unregistered SEI if available
x265-params?
optionalx265-params?:string
set the x265 configuration using a :-separated list of key=value parameters
x265-stats?
optionalx265-stats?:string
Filename for 2 pass stats
See
https://ffmpeg.org/ffmpeg-codecs.html#libx265
libxavs
libxavs:
object
Defined in: src/constants/options.ts:3058
libxavs Chinese AVS (Audio Video Standard)
aud?
optionalaud?:boolean
Use access unit delimiters.
b_strategy?
optionalb_strategy?:number
Strategy to choose between I/P/B-frames
b-bias?
optionalb-bias?:number
Influences how often B-frames are used
chromaoffset?
optionalchromaoffset?:number
QP difference between chroma and luma
cplxblur?
optionalcplxblur?:number
Reduce fluctuations in QP (before curve compression)
crf?
optionalcrf?:number
Select the quality for constant quality mode
direct-pred?
optionaldirect-pred?:"none"|"auto"|"spatial"|"temporal"
Direct MV prediction mode
fast-pskip?
optionalfast-pskip?:boolean
mbtree?
optionalmbtree?:boolean
Use macroblock tree ratecontrol.
mixed-refs?
optionalmixed-refs?:boolean
One reference per partition, as opposed to one reference per macroblock
motion-est?
optionalmotion-est?:"hex"|"dia"|"umh"|"esa"|"tesa"
Set motion estimation method
noise_reduction?
optionalnoise_reduction?:number
Noise reduction
qp?
optionalqp?:number
Constant quantization parameter rate control method
sc_threshold?
optionalsc_threshold?:number
Scene change threshold
See
https://ffmpeg.org/ffmpeg-codecs.html#libxavs
libxavs2
libxavs2:
object
Defined in: src/constants/options.ts:3091
libxavs2 AVS2-P2/IEEE1857.4
initial_qp?
optionalinitial_qp?:number
Quantization initial parameter
lcu_row_threads?
optionallcu_row_threads?:number
number of parallel threads for rows
log_level?
optionallog_level?:number
log level: -1: none, 0: error, 1: warning, 2: info, 3: debug
max_qp?
optionalmax_qp?:number
max qp for rate control
min_qp?
optionalmin_qp?:number
min qp for rate control
qp?
optionalqp?:number
Quantization parameter
speed_level?
optionalspeed_level?:number
Speed level, higher is better but slower
xavs2-params?
optionalxavs2-params?:string
set the xavs2 configuration using a :-separated list of key=value parameters
See
https://ffmpeg.org/ffmpeg-codecs.html#libxavs2
libxeve
libxeve:
object
Defined in: src/constants/options.ts:3113
libxeve MPEG-5 EVC
crf?
optionalcrf?:number
Constant rate factor value for CRF rate control mode
hash?
optionalhash?:number
Embed picture signature (HASH) for conformance checking in decoding
preset?
optionalpreset?:"fast"|"default"|"medium"|"slow"|"placebo"
Encoding preset for setting encoding speed
profile?
optionalprofile?:"main"|"baseline"
Encoding profile
qp?
optionalqp?:number
Quantization parameter value for CQP rate control mode
rc_mode?
optionalrc_mode?:"CQP"|"ABR"|"CRF"
Rate control mode
sei_info?
optionalsei_info?:number
Embed SEI messages identifying encoder parameters and command line arguments
tune?
optionaltune?:"none"|"psnr"|"zerolatency"
Tuning parameter for special purpose operation
xeve-params?
optionalxeve-params?:string
Override the xeve configuration using a :-separated list of key=value parameters
See
https://ffmpeg.org/ffmpeg-codecs.html#libxeve
libxvid
libxvid:
object
Defined in: src/constants/options.ts:3137
libxvidcore MPEG-4 part 2
gmc?
optionalgmc?:number
use GMC
lumi_aq?
optionallumi_aq?:number
Luminance masking AQ
me_quality?
optionalme_quality?:number
Motion estimation quality
mpeg_quant?
optionalmpeg_quant?:number
Use MPEG quantizers instead of H.263
ssim?
optionalssim?:"frame"|"avg"|"off"
Show SSIM information to stdout
ssim_acc?
optionalssim_acc?:number
SSIM accuracy
variance_aq?
optionalvariance_aq?:number
Variance AQ
See
https://ffmpeg.org/ffmpeg-codecs.html#libxvid
ljpeg
ljpeg:
object
Defined in: src/constants/options.ts:3157
Lossless JPEG
pred?
optionalpred?:"left"|"plane"|"median"
Prediction method
See
https://ffmpeg.org/ffmpeg-codecs.html#ljpeg
magicyuv
magicyuv:
object
Defined in: src/constants/options.ts:3165
MagicYUV video
pred?
optionalpred?:"left"|"median"|"gradient"
Prediction method
See
https://ffmpeg.org/ffmpeg-codecs.html#magicyuv
mjpeg
mjpeg:
object
Defined in: src/constants/options.ts:3173
MJPEG (Motion JPEG)
border_mask?
optionalborder_mask?:number
increase the quantizer for macroblocks close to borders
chroma_elim_threshold?
optionalchroma_elim_threshold?:number
single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)
error_rate?
optionalerror_rate?:number
Simulate errors in the bitstream to test error concealment.
force_duplicated_matrix?
optionalforce_duplicated_matrix?:boolean
Always write luma and chroma matrix for mjpeg, useful for rtp streaming.
huffman?
optionalhuffman?:"default"|"optimal"
Huffman table strategy
lmax?
optionallmax?:number
maximum Lagrange factor (VBR)
lmin?
optionallmin?:number
minimum Lagrange factor (VBR)
luma_elim_threshold?
optionalluma_elim_threshold?:number
single coefficient elimination threshold for luminance (negative values also consider dc coefficient)
mpv_flags?
optionalmpv_flags?:string&object|"skip_rd"|"strict_gop"|"qp_rd"|"cbp_rd"|"naq"
Flags common for all mpegvideo-based encoders.
noise_reduction?
optionalnoise_reduction?:number
Noise reduction
ps?
optionalps?:number
RTP payload size in bytes
qsquish?
optionalqsquish?:number
how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function)
quantizer_noise_shaping?
optionalquantizer_noise_shaping?:number
rc_buf_aggressivity?
optionalrc_buf_aggressivity?:number
currently useless
rc_eq?
optionalrc_eq?:string
Set rate control equation. When computing the expression, besides the standard functions
rc_init_cplx?
optionalrc_init_cplx?:number
initial complexity for 1-pass encoding
rc_qmod_amp?
optionalrc_qmod_amp?:number
experimental quantizer modulation
rc_qmod_freq?
optionalrc_qmod_freq?:number
experimental quantizer modulation
skip_cmp?
optionalskip_cmp?:"psnr"|"rd"|"sad"|"sse"|"satd"|"dct"|"bit"|"zero"|"vsad"|"vsse"|"nsse"|"dctmax"|"chroma"|"msad"|"dct264"
Frame skip compare function
skip_exp?
optionalskip_exp?:number
Frame skip exponent
skip_factor?
optionalskip_factor?:number
Frame skip factor
skip_threshold?
optionalskip_threshold?:number
Frame skip threshold
See
https://ffmpeg.org/ffmpeg-codecs.html#mjpeg
mjpeg_qsv
mjpeg_qsv:
object
Defined in: src/constants/options.ts:3222
MJPEG (Intel Quick Sync Video acceleration)
async_depth?
optionalasync_depth?:number
Maximum processing parallelism
See
https://ffmpeg.org/ffmpeg-codecs.html#mjpeg_005fqsv
mjpeg_vaapi
mjpeg_vaapi:
object
Defined in: src/constants/options.ts:3230
MJPEG (VAAPI)
async_depth?
optionalasync_depth?:number
Maximum processing parallelism.
b_depth?
optionalb_depth?:number
Maximum B-frame reference depth
huffman?
optionalhuffman?:boolean
Include huffman tables
idr_interval?
optionalidr_interval?:number
Distance (in I-frames) between key frames
jfif?
optionaljfif?:boolean
Include JFIF header
low_power?
optionallow_power?:boolean
Use low-power encoding mode (only available on some platforms;
max_frame_size?
optionalmax_frame_size?:number
Maximum frame size (in bytes)
See
https://ffmpeg.org/ffmpeg-codecs.html#mjpeg_005fvaapi
mjpeg_videotoolbox
mjpeg_videotoolbox:
object
Defined in: src/constants/options.ts:3250
VideoToolbox MJPEG Encoder
allow_sw?
optionalallow_sw?:boolean
Allow software encoding
See
https://ffmpeg.org/ffmpeg-codecs.html#mjpeg_005fvideotoolbox
mlp
mlp:
object
Defined in: src/constants/options.ts:3258
MLP (Meridian Lossless Packing)
codebook_search?
optionalcodebook_search?:number
Max number of codebook searches
lpc_coeff_precision?
optionallpc_coeff_precision?:number
LPC coefficient precision
lpc_passes?
optionallpc_passes?:number
Number of passes to use for Cholesky factorization during LPC analysis
lpc_type?
optionallpc_type?:"levinson"|"cholesky"
LPC algorithm
max_interval?
optionalmax_interval?:number
Max number of frames between each new header
prediction_order?
optionalprediction_order?:"estimation"|"search"
Search method for selecting prediction order
rematrix_precision?
optionalrematrix_precision?:number
Rematrix coefficient precision
See
https://ffmpeg.org/ffmpeg-codecs.html#mlp
mov_text
mov_text:
object
Defined in: src/constants/options.ts:3278
3GPP Timed Text subtitle
height?
optionalheight?:number
Frame height, usually video height
See
https://ffmpeg.org/ffmpeg-codecs.html#mov_005ftext
mpeg2_qsv
mpeg2_qsv:
object
Defined in: src/constants/options.ts:3286
MPEG-2 video (Intel Quick Sync Video acceleration)
async_depth?
optionalasync_depth?:number
Maximum processing parallelism
forced_idr?
optionalforced_idr?:boolean
Forcing I frames as IDR frames
low_power?
optionallow_power?:boolean
enable low power mode(experimental: many limitations by mfx version, BRC modes, etc.)
preset?
optionalpreset?:"fast"|"medium"|"slow"|"veryfast"|"faster"|"slower"|"veryslow"
profile?
optionalprofile?:"unknown"|"simple"|"main"|"high"
qsv_params?
optionalqsv_params?:string
Set QSV encoder parameters as key1=value1:key2=value2:...
rdo?
optionalrdo?:number
Enable rate distortion optimization
See
https://ffmpeg.org/ffmpeg-codecs.html#mpeg2_005fqsv
mpeg2_vaapi
mpeg2_vaapi:
object
Defined in: src/constants/options.ts:3304
MPEG-2 (VAAPI)
async_depth?
optionalasync_depth?:number
Maximum processing parallelism.
b_depth?
optionalb_depth?:number
Maximum B-frame reference depth
blbrc?
optionalblbrc?:boolean
Block level based bitrate control
idr_interval?
optionalidr_interval?:number
Distance (in I-frames) between key frames
level?
optionallevel?:"main"|"low"|"high"|"high_1440"
Set level (in profile_and_level_indication)
low_power?
optionallow_power?:boolean
Use low-power encoding mode (only available on some platforms;
max_frame_size?
optionalmax_frame_size?:number
Maximum frame size (in bytes)
profile?
optionalprofile?:"simple"|"main"
Set profile (in profile_and_level_indication)
rc_mode?
optionalrc_mode?:"auto"|"CQP"|"CBR"|"VBR"|"QVBR"|"ICQ"|"AVBR"
Set rate control mode
See
https://ffmpeg.org/ffmpeg-codecs.html#mpeg2_005fvaapi
mpeg4
mpeg4:
object
Defined in: src/constants/options.ts:3328
MPEG-4 part 2
alternate_scan?
optionalalternate_scan?:boolean
Enable alternate scantable.
b_sensitivity?
optionalb_sensitivity?:number
Adjust sensitivity of b_frame_strategy 1
b_strategy?
optionalb_strategy?:number
Strategy to choose between I/P/B-frames
border_mask?
optionalborder_mask?:number
increase the quantizer for macroblocks close to borders
brd_scale?
optionalbrd_scale?:number
Downscale frames for dynamic B-frame decision
chroma_elim_threshold?
optionalchroma_elim_threshold?:number
single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)
data_partitioning?
optionaldata_partitioning?:boolean
Use data partitioning.
error_rate?
optionalerror_rate?:number
Simulate errors in the bitstream to test error concealment.
intra_penalty?
optionalintra_penalty?:number
Penalty for intra blocks in block decision
lmax?
optionallmax?:number
maximum Lagrange factor (VBR)
lmin?
optionallmin?:number
minimum Lagrange factor (VBR)
luma_elim_threshold?
optionalluma_elim_threshold?:number
single coefficient elimination threshold for luminance (negative values also consider dc coefficient)
mepc?
optionalmepc?:number
Motion estimation bitrate penalty compensation (1.0 = 256)
mepre?
optionalmepre?:number
pre motion estimation
motion_est?
optionalmotion_est?:"zero"|"epzs"|"xone"
motion estimation algorithm
mpeg_quant?
optionalmpeg_quant?:number
Use MPEG quantizers instead of H.263
mpv_flags?
optionalmpv_flags?:string&object|"skip_rd"|"strict_gop"|"qp_rd"|"cbp_rd"|"naq"|"mv0"
Flags common for all mpegvideo-based encoders.
noise_reduction?
optionalnoise_reduction?:number
Noise reduction
ps?
optionalps?:number
RTP payload size in bytes
qsquish?
optionalqsquish?:number
how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function)
quantizer_noise_shaping?
optionalquantizer_noise_shaping?:number
rc_buf_aggressivity?
optionalrc_buf_aggressivity?:number
currently useless
rc_eq?
optionalrc_eq?:string
Set rate control equation. When computing the expression, besides the standard functions
rc_init_cplx?
optionalrc_init_cplx?:number
initial complexity for 1-pass encoding
rc_qmod_amp?
optionalrc_qmod_amp?:number
experimental quantizer modulation
rc_qmod_freq?
optionalrc_qmod_freq?:number
experimental quantizer modulation
sc_threshold?
optionalsc_threshold?:number
Scene change threshold
skip_cmp?
optionalskip_cmp?:"psnr"|"rd"|"sad"|"sse"|"satd"|"dct"|"bit"|"zero"|"vsad"|"vsse"|"nsse"|"dctmax"|"chroma"|"msad"|"dct264"
Frame skip compare function
skip_exp?
optionalskip_exp?:number
Frame skip exponent
skip_factor?
optionalskip_factor?:number
Frame skip factor
skip_threshold?
optionalskip_threshold?:number
Frame skip threshold
See
https://ffmpeg.org/ffmpeg-codecs.html#mpeg4
mpeg4_omx
mpeg4_omx:
object
Defined in: src/constants/options.ts:3395
OpenMAX IL MPEG-4 video encoder
omx_libname?
optionalomx_libname?:string
OpenMAX library name
omx_libprefix?
optionalomx_libprefix?:string
OpenMAX library prefix
profile?
optionalprofile?:"main"|"high"|"baseline"
Set the encoding profile
zerocopy?
optionalzerocopy?:number
Try to avoid copying input frames if possible
See
https://ffmpeg.org/ffmpeg-codecs.html#mpeg4_005fomx
opus
opus:
object
Defined in: src/constants/options.ts:3409
Opus
apply_phase_inv?
optionalapply_phase_inv?:boolean
Apply intensity stereo phase inversion
opus_delay?
optionalopus_delay?:number
Maximum delay in milliseconds
See
https://ffmpeg.org/ffmpeg-codecs.html#opus
png
png:
object
Defined in: src/constants/options.ts:3419
PNG (Portable Network Graphics) image
dpi?
optionaldpi?:number
Set image resolution (in dots per inch)
dpm?
optionaldpm?:number
Set image resolution (in dots per meter)
pred?
optionalpred?:"none"|"sub"|"up"|"avg"|"paeth"|"mixed"
Prediction method
See
https://ffmpeg.org/ffmpeg-codecs.html#png
prores
prores:
object
Defined in: src/constants/options.ts:3431
Apple ProRes
vendor?
optionalvendor?:string
vendor ID
See
https://ffmpeg.org/ffmpeg-codecs.html#prores
prores_aw
prores_aw:
object
Defined in: src/constants/options.ts:3439
Apple ProRes
vendor?
optionalvendor?:string
vendor ID
See
https://ffmpeg.org/ffmpeg-codecs.html#prores_005faw
prores_ks
prores_ks:
object
Defined in: src/constants/options.ts:3447
Apple ProRes (iCodec Pro)
alpha_bits?
optionalalpha_bits?:number
bits for alpha plane
bits_per_mb?
optionalbits_per_mb?:number
desired bits per macroblock
mbs_per_slice?
optionalmbs_per_slice?:number
macroblocks per slice
profile?
optionalprofile?:"auto"|"hq"|"proxy"|"lt"|"standard"|"4444"|"4444xq"
quant_mat?
optionalquant_mat?:"auto"|"default"|"hq"|"proxy"|"lt"|"standard"
quantiser matrix
vendor?
optionalvendor?:string
vendor ID
See
https://ffmpeg.org/ffmpeg-codecs.html#prores_005fks
prores_ks_vulkan
prores_ks_vulkan:
object
Defined in: src/constants/options.ts:3464
Apple ProRes (iCodec Pro)
alpha_bits?
optionalalpha_bits?:number
bits for alpha plane
async_depth?
optionalasync_depth?:number
Internal parallelization depth
bits_per_mb?
optionalbits_per_mb?:number
desired bits per macroblock
mbs_per_slice?
optionalmbs_per_slice?:number
macroblocks per slice
profile?
optionalprofile?:"auto"|"hq"|"proxy"|"lt"|"standard"|"4444"|"4444xq"
quant_mat?
optionalquant_mat?:"auto"|"default"|"hq"|"proxy"|"lt"|"standard"
quantiser matrix
vendor?
optionalvendor?:string
vendor ID
See
https://ffmpeg.org/ffmpeg-codecs.html#prores_005fks_005fvulkan
prores_videotoolbox
prores_videotoolbox:
object
Defined in: src/constants/options.ts:3483
VideoToolbox ProRes Encoder
allow_sw?
optionalallow_sw?:boolean
Allow software encoding
frames_after?
optionalframes_after?:boolean
Other frames will come after the frames in this session. This helps smooth concatenation issues.
frames_before?
optionalframes_before?:boolean
Other frames will come before the frames in this session. This helps smooth concatenation issues.
max_ref_frames?
optionalmax_ref_frames?:number
Sets the maximum number of reference frames. This only has an effect when the value is less than the maximum allowed by the profile/level.
power_efficient?
optionalpower_efficient?:number
Set to 1 to enable more power-efficient encoding if supported.
prio_speed?
optionalprio_speed?:boolean
prioritize encoding speed
profile?
optionalprofile?:"auto"|"hq"|"proxy"|"lt"|"standard"|"4444"|"xq"
Profile
realtime?
optionalrealtime?:boolean
Hint that encoding should happen in real-time if not faster (e.g. capturing from camera).
require_sw?
optionalrequire_sw?:boolean
Require software encoding
spatial_aq?
optionalspatial_aq?:number
Set to 1 to enable spatial AQ if supported.
See
https://ffmpeg.org/ffmpeg-codecs.html#prores_005fvideotoolbox
roqvideo
roqvideo:
object
Defined in: src/constants/options.ts:3509
id RoQ video
quake3_compat?
optionalquake3_compat?:boolean
Whether to respect known limitations in Quake 3 decoder
See
https://ffmpeg.org/ffmpeg-codecs.html#roqvideo
rpza
rpza:
object
Defined in: src/constants/options.ts:3517
QuickTime video (RPZA)
continue_one_color_thresh?
optionalcontinue_one_color_thresh?:number
sixteen_color_thresh?
optionalsixteen_color_thresh?:number
skip_frame_thresh?
optionalskip_frame_thresh?:number
start_one_color_thresh?
optionalstart_one_color_thresh?:number
See
https://ffmpeg.org/ffmpeg-codecs.html#rpza
sbc
sbc:
object
Defined in: src/constants/options.ts:3527
SBC (low-complexity subband codec)
msbc?
optionalmsbc?:boolean
use mSBC mode (wideband speech mono SBC)
sbc_delay?
optionalsbc_delay?:string
set maximum algorithmic latency
See
https://ffmpeg.org/ffmpeg-codecs.html#sbc
sgi
sgi:
object
Defined in: src/constants/options.ts:3537
SGI image
rle?
optionalrle?:number
Use run-length compression
See
https://ffmpeg.org/ffmpeg-codecs.html#sgi
snow
snow:
object
Defined in: src/constants/options.ts:3545
Snow
intra_penalty?
optionalintra_penalty?:number
Penalty for intra blocks in block decision
iterative_dia_size?
optionaliterative_dia_size?:number
Dia size for the iterative ME
memc_only?
optionalmemc_only?:boolean
Only do ME/MC (I frames -> ref, P frame -> ME+MC).
motion_est?
optionalmotion_est?:"zero"|"epzs"|"xone"|"iter"
motion estimation algorithm
no_bitstream?
optionalno_bitstream?:boolean
Skip final bitstream writeout.
pred?
optionalpred?:"dwt53"|"dwt97"
Spatial decomposition type
rc_eq?
optionalrc_eq?:string
Set rate control equation. When computing the expression, besides the standard functions
sc_threshold?
optionalsc_threshold?:number
Scene change threshold
See
https://ffmpeg.org/ffmpeg-codecs.html#snow
sunrast
sunrast:
object
Defined in: src/constants/options.ts:3567
Sun Rasterfile image
rle?
optionalrle?:number
Use run-length compression
See
https://ffmpeg.org/ffmpeg-codecs.html#sunrast
svq1
svq1:
object
Defined in: src/constants/options.ts:3575
Sorenson Vector Quantizer 1 / Sorenson Video 1 / SVQ1
motion-est?
optionalmotion-est?:"zero"|"epzs"|"xone"
Motion estimation algorithm
See
https://ffmpeg.org/ffmpeg-codecs.html#svq1
targa
targa:
object
Defined in: src/constants/options.ts:3583
Truevision Targa image
rle?
optionalrle?:number
Use run-length compression
See
https://ffmpeg.org/ffmpeg-codecs.html#targa
tiff
tiff:
object
Defined in: src/constants/options.ts:3591
TIFF image
compression_algo?
optionalcompression_algo?:"packbits"|"raw"|"lzw"|"deflate"
dpi?
optionaldpi?:number
set the image resolution (in dpi)
See
https://ffmpeg.org/ffmpeg-codecs.html#tiff
truehd
truehd:
object
Defined in: src/constants/options.ts:3600
TrueHD
codebook_search?
optionalcodebook_search?:number
Max number of codebook searches
lpc_coeff_precision?
optionallpc_coeff_precision?:number
LPC coefficient precision
lpc_passes?
optionallpc_passes?:number
Number of passes to use for Cholesky factorization during LPC analysis
lpc_type?
optionallpc_type?:"levinson"|"cholesky"
LPC algorithm
max_interval?
optionalmax_interval?:number
Max number of frames between each new header
prediction_order?
optionalprediction_order?:"estimation"|"search"
Search method for selecting prediction order
rematrix_precision?
optionalrematrix_precision?:number
Rematrix coefficient precision
See
https://ffmpeg.org/ffmpeg-codecs.html#truehd
utvideo
utvideo:
object
Defined in: src/constants/options.ts:3620
Ut Video
pred?
optionalpred?:"none"|"left"|"median"
Prediction method
See
https://ffmpeg.org/ffmpeg-codecs.html#utvideo
vbn
vbn:
object
Defined in: src/constants/options.ts:3628
Vizrt Binary Image
format?
optionalformat?:"dxt1"|"raw"|"dxt5"
Texture format
See
https://ffmpeg.org/ffmpeg-codecs.html#vbn
vc2
vc2:
object
Defined in: src/constants/options.ts:3636
SMPTE VC-2
qm?
optionalqm?:"flat"|"default"|"color"
Custom quantization matrix
slice_height?
optionalslice_height?:number
Slice height
slice_width?
optionalslice_width?:number
Slice width
tolerance?
optionaltolerance?:number
Max undershoot in percent
wavelet_depth?
optionalwavelet_depth?:number
Transform depth
wavelet_type?
optionalwavelet_type?:"9_7"|"5_3"|"haar"|"haar_noshift"
Transform type
See
https://ffmpeg.org/ffmpeg-codecs.html#vc2
vp8_vaapi
vp8_vaapi:
object
Defined in: src/constants/options.ts:3654
VP8 (VAAPI)
async_depth?
optionalasync_depth?:number
Maximum processing parallelism.
b_depth?
optionalb_depth?:number
Maximum B-frame reference depth
blbrc?
optionalblbrc?:boolean
Block level based bitrate control
idr_interval?
optionalidr_interval?:number
Distance (in I-frames) between key frames
loop_filter_level?
optionalloop_filter_level?:number
Loop filter level
loop_filter_sharpness?
optionalloop_filter_sharpness?:number
Loop filter sharpness
low_power?
optionallow_power?:boolean
Use low-power encoding mode (only available on some platforms;
max_frame_size?
optionalmax_frame_size?:number
Maximum frame size (in bytes)
rc_mode?
optionalrc_mode?:"auto"|"CQP"|"CBR"|"VBR"|"QVBR"|"ICQ"|"AVBR"
Set rate control mode
See
https://ffmpeg.org/ffmpeg-codecs.html#vp8_005fvaapi
vp9_qsv
vp9_qsv:
object
Defined in: src/constants/options.ts:3678
VP9 video (Intel Quick Sync Video acceleration)
async_depth?
optionalasync_depth?:number
Maximum processing parallelism
forced_idr?
optionalforced_idr?:boolean
Forcing I frames as IDR frames
low_power?
optionallow_power?:boolean
enable low power mode(experimental: many limitations by mfx version, BRC modes, etc.)
preset?
optionalpreset?:"fast"|"medium"|"slow"|"veryfast"|"faster"|"slower"|"veryslow"
profile?
optionalprofile?:"unknown"|"profile0"|"profile1"|"profile2"|"profile3"
qsv_params?
optionalqsv_params?:string
Set QSV encoder parameters as key1=value1:key2=value2:...
tile_cols?
optionaltile_cols?:number
Number of columns for tiled encoding
tile_rows?
optionaltile_rows?:number
Number of rows for tiled encoding
See
https://ffmpeg.org/ffmpeg-codecs.html#vp9_005fqsv
vp9_vaapi
vp9_vaapi:
object
Defined in: src/constants/options.ts:3698
VP9 (VAAPI)
async_depth?
optionalasync_depth?:number
Maximum processing parallelism.
b_depth?
optionalb_depth?:number
Maximum B-frame reference depth
blbrc?
optionalblbrc?:boolean
Block level based bitrate control
idr_interval?
optionalidr_interval?:number
Distance (in I-frames) between key frames
loop_filter_level?
optionalloop_filter_level?:number
Loop filter level
loop_filter_sharpness?
optionalloop_filter_sharpness?:number
Loop filter sharpness
low_power?
optionallow_power?:boolean
Use low-power encoding mode (only available on some platforms;
max_frame_size?
optionalmax_frame_size?:number
Maximum frame size (in bytes)
rc_mode?
optionalrc_mode?:"auto"|"CQP"|"CBR"|"VBR"|"QVBR"|"ICQ"|"AVBR"
Set rate control mode
See
https://ffmpeg.org/ffmpeg-codecs.html#vp9_005fvaapi
wavpack
wavpack:
object
Defined in: src/constants/options.ts:3722
WavPack
joint_stereo?
optionaljoint_stereo?:boolean
optimize_mono?
optionaloptimize_mono?:boolean