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node-av / lib / avImageAlloc

Function: avImageAlloc() ​

avImageAlloc(width, height, pixFmt, align): object

Defined in: src/lib/utilities.ts:334

Allocate image buffer.

Allocates a buffer large enough to hold an image with the specified dimensions and pixel format. Returns buffer and layout information.

Direct mapping to av_image_alloc().

Parameters ​

width ​

number

Image width in pixels

height ​

number

Image height in pixels

pixFmt ​

AVPixelFormat

Pixel format

align ​

number

Buffer alignment (typically 1 or 32)

Returns ​

object

Object with buffer, size, and line sizes

buffer ​

buffer: Buffer

linesizes ​

linesizes: number[]

size ​

size: number

Throws ​

If allocation fails

Example ​

typescript
import { AV_PIX_FMT_YUV420P } from 'node-av/constants';

const { buffer, size, linesizes } = avImageAlloc(
  1920, 1080, AV_PIX_FMT_YUV420P, 32
);
console.log(`Allocated ${size} bytes`);
console.log(`Line sizes: ${linesizes}`);

See ​