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canReencodeVideoTrack()

packages/docs/docs/webcodecs/can-reencode-video-track.mdx

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:::warning We are phasing out Remotion WebCodecs and are moving to Mediabunny! :::

Part of the @remotion/webcodecs package.

:::warning Unstable API: This package is experimental. We might change the API at any time, until we remove this notice. :::

Given a VideoTrack, determine if it can be re-encoded to another track.

You can obtain a VideoTrack using parseMedia() or during the conversion process using the onVideoTrack callback of convertMedia().

Examples

tsx
import {parseMedia} from '@remotion/media-parser';
import {canReencodeVideoTrack} from '@remotion/webcodecs';

const {tracks} = await parseMedia({
  src: 'https://remotion.media/BigBuckBunny.mp4',
  fields: {
    tracks: true,
  },
});

const videoTracks = tracks.filter((t) => t.type === 'video');

for (const track of videoTracks) {
  await canReencodeVideoTrack({
    track,
    videoCodec: 'vp8',
    resizeOperation: null,
    rotate: null,
  });
}
tsx
import {convertMedia, canReencodeVideoTrack} from '@remotion/webcodecs';

await convertMedia({
  src: 'https://remotion.media/BigBuckBunny.mp4',
  container: 'webm',
  videoCodec: 'vp8',
  audioCodec: 'opus',
  onVideoTrack: async ({track, resizeOperation, rotate}) => {
    const canReencode = await canReencodeVideoTrack({
      track,
      videoCodec: 'vp8',
      resizeOperation,
      rotate,
    });

    if (canReencode) {
      return {type: 'reencode', videoCodec: 'vp8'};
    }

    return {type: 'drop'};
  },
});

API

track

A VideoTrack object.

videoCodec

string <TsType type="ConvertMediaVideoCodec" source="@remotion/webcodecs" />

One of the supported video codecs: "vp8", "vp9".

resizeOperation

The resize operation you would like to apply.

rotate

The rotate operation you would like to apply.

Return value

Returns a Promise<boolean>.

See also