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node-av / lib / dtsPredict

Function: dtsPredict() ​

dtsPredict(packet, stream, state): DtsPredictState

Defined in: src/lib/utilities.ts:1331

Predict and update DTS timestamps for demuxed packets.

This is a native implementation of FFmpeg's ist_dts_update(). It predicts the next DTS based on codec type and stream metadata, handling both audio (sample-based) and video (frame-rate-based) timing.

Parameters ​

packet ​

NativeWrapper<NativePacket>

Native Packet

stream ​

NativeWrapper<NativeStream>

Native Stream

state ​

DtsPredictState

Current DTS prediction state

Returns ​

DtsPredictState

Updated state with new DTS values

Example ​

typescript
const newState = dtsPredict(packet, stream, {
  sawFirstTs: false,
  dts: AV_NOPTS_VALUE,
  nextDts: AV_NOPTS_VALUE,
  firstDts: AV_NOPTS_VALUE,
});