Supported formats and codecs by Mediabunny

The following features from Remotion are using Mediabunny:

<Video> from @remotion/media
<Audio> from @remotion/media

Therefore, format support is bound to the formats and codecs supported by Mediabunny. Mediabunny's compatibility data is mirrored on this page.

Supported container formats

ISOBMFF-based formats (.mp4, .m4v, .m4a, ...)
QuickTime File Format (.mov)
Matroska (.mkv)
WebM (.webm)
Ogg (.ogg)
MP3 (.mp3)
WAVE (.wav)
ADTS (.aac)
FLAC (.flac)
MPEG Transport Stream (.ts)
HLS (.m3u8) - HTTP Live Streaming playlists (VOD only)

Video codecs

'avc' - Advanced Video Coding (AVC) / H.264
'hevc' - High Efficiency Video Coding (HEVC) / H.265

:::note Chrome Headless Shell does not support HEVC in headless mode. This means that during rendering of Remotion videos server-side, HEVC videos cannot be decoded using <Video> from @remotion/media. :::

'vp8' - VP8
'vp9' - VP9
'av1' - AOMedia Video 1 (AV1)

Audio codecs

'aac' - Advanced Audio Coding (AAC)
'opus' - Opus
'mp3' - MP3
'vorbis' - Vorbis
'flac' - Free Lossless Audio Codec (FLAC)
'pcm-u8' - 8-bit unsigned PCM
'pcm-s8' - 8-bit signed PCM
'pcm-s16' - 16-bit little-endian signed PCM
'pcm-s16be' - 16-bit big-endian signed PCM
'pcm-s24' - 24-bit little-endian signed PCM
'pcm-s24be' - 24-bit big-endian signed PCM
'pcm-s32' - 32-bit little-endian signed PCM
'pcm-s32be' - 32-bit big-endian signed PCM
'pcm-f32' - 32-bit little-endian float PCM
'pcm-f32be' - 32-bit big-endian float PCM
'pcm-f64' - 64-bit little-endian float PCM
'pcm-f64be' - 64-bit big-endian float PCM
'ulaw' - μ-law PCM
'alaw' - A-law PCM

AC-3 and E-AC-3<AvailableFrom v="4.0.427"/>

AC-3 (Dolby Digital) and E-AC-3 (Dolby Digital Plus) are not natively supported by WebCodecs and are not enabled by default in @remotion/media.

If you need AC-3/E-AC-3 support, you can enable it yourself by installing and registering the decoder:

bash

npx remotion add @mediabunny/ac3

tsx

import {registerAc3Decoder, registerAc3Encoder} from '@mediabunny/ac3';

registerAc3Decoder();
registerAc3Encoder();

Compatibility table

Not all codecs can be used with all containers. The following table specifies the supported codec-container combinations:

	.mp4	.mov	.mkv	.webm	.ogg	.mp3	.wav	.aac	.flac	.ts
`'avc'`	✓	✓	✓							✓
`'hevc'`	✓	✓	✓							✓
`'vp8'`	✓	✓	✓	✓
`'vp9'`	✓	✓	✓	✓
`'av1'`	✓	✓	✓	✓
`'aac'`	✓	✓	✓					✓		✓
`'opus'`	✓	✓	✓	✓	✓
`'mp3'`	✓	✓	✓			✓				✓
`'vorbis'`	✓	✓	✓	✓	✓
`'flac'`	✓	✓	✓						✓
`'pcm-u8'`		✓	✓				✓
`'pcm-s8'`		✓
`'pcm-s16'`	✓	✓	✓				✓
`'pcm-s16be'`	✓	✓	✓
`'pcm-s24'`	✓	✓	✓				✓
`'pcm-s24be'`	✓	✓	✓
`'pcm-s32'`	✓	✓	✓				✓
`'pcm-s32be'`	✓	✓	✓
`'pcm-f32'`	✓	✓	✓				✓
`'pcm-f32be'`	✓	✓
`'pcm-f64'`	✓	✓	✓
`'pcm-f64be'`	✓	✓
`'ulaw'`		✓					✓
`'alaw'`		✓					✓
`'ac3'`	✓	✓	✓							✓
`'eac3'`	✓	✓	✓							✓

:::note AC-3 and E-AC-3 entries in the table above require manual registration of the @mediabunny/ac3 decoder. :::

CORS

All media files must be either CORS-enabled or served from the bundle using staticFile().