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canReencodeVideoTrack()

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​

Check if video tracks can be re-encoded to VP8
tsx
import {parseMedia} from '@remotion/media-parser';
import {canReencodeVideoTrack} from '@remotion/webcodecs';
 
const {videoTracks} = await parseMedia({
  src: 'https://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4',
  fields: {
    tracks: true,
  },
});
 
for (const track of videoTracks) {
  await canReencodeVideoTrack({
    track,
    videoCodec: 'vp8',
  });
}
Check if video tracks can be re-encoded to VP8
tsx
import {parseMedia} from '@remotion/media-parser';
import {canReencodeVideoTrack} from '@remotion/webcodecs';
 
const {videoTracks} = await parseMedia({
  src: 'https://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4',
  fields: {
    tracks: true,
  },
});
 
for (const track of videoTracks) {
  await canReencodeVideoTrack({
    track,
    videoCodec: 'vp8',
  });
}
Convert a video track to VP8, otherwise drop it
tsx
import {convertMedia, canReencodeVideoTrack} from '@remotion/webcodecs';
 
await convertMedia({
  src: 'https://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4',
  container: 'webm',
  videoCodec: 'vp8',
  audioCodec: 'opus',
  onVideoTrack: async ({track}) => {
    const canReencode = await canReencodeVideoTrack({
      track,
      videoCodec: 'vp8',
    });
 
    if (canReencode) {
      return {type: 'reencode', videoCodec: 'vp8'};
    }
 
    return {type: 'drop'};
  },
});
Convert a video track to VP8, otherwise drop it
tsx
import {convertMedia, canReencodeVideoTrack} from '@remotion/webcodecs';
 
await convertMedia({
  src: 'https://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4',
  container: 'webm',
  videoCodec: 'vp8',
  audioCodec: 'opus',
  onVideoTrack: async ({track}) => {
    const canReencode = await canReencodeVideoTrack({
      track,
      videoCodec: 'vp8',
    });
 
    if (canReencode) {
      return {type: 'reencode', videoCodec: 'vp8'};
    }
 
    return {type: 'drop'};
  },
});

API​

track​

A VideoTrack object.

videoCodec​

string ConvertMediaVideoCodec

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

Return value​

Returns a Promise<boolean>.

See also​