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Add Mediabunny Codec Registry

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Vanilagy
2026-02-12 11:56:37 +01:00
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docs/guide/supported-formats-and-codecs.md
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@@ -21,6 +21,8 @@ Mediabunny supports a wide range of video, audio, and subtitle codecs. More spec
The availability of the codecs provided by the WebCodecs API depends on the browser and thus cannot be guaranteed by this library. Mediabunny provides [special utility functions](#querying-codec-encodability) to check which codecs are able to be encoded. You can also specify [custom coders](#custom-coders) to provide your own encoder/decoder implementation if the browser doesn't support the codec natively.
For precise definitions of each codec including the corresponding packet format, please refer to the [Mediabunny Codec Registry](/codec-registry/overview).
::: info
Mediabunny ships with built-in decoders and encoders for all audio PCM codecs, meaning they are always supported.
:::
@@ -40,8 +42,8 @@ Mediabunny ships with built-in decoders and encoders for all audio PCM codecs, m
- `'mp3'` - MP3
- `'vorbis'` - Vorbis
- `'flac'` - Free Lossless Audio Codec (FLAC)
- `'ac3'` - Dolby Digital (AC-3)
- `'eac3'` - Dolby Digital Plus (E-AC-3)
- `'ac3'` - Dolby Digital (AC-3) [^1]
- `'eac3'` - Dolby Digital Plus (E-AC-3) [^1]
- `'pcm-u8'` - 8-bit unsigned PCM
- `'pcm-s8'` - 8-bit signed PCM
- `'pcm-s16'` - 16-bit little-endian signed PCM
@@ -57,6 +59,8 @@ Mediabunny ships with built-in decoders and encoders for all audio PCM codecs, m
- `'ulaw'` - μ-law PCM
- `'alaw'` - A-law PCM
[^1]: AC-3 and E-AC-3 are not natively supported by WebCodecs. To encode or decode these codecs, you must provide a [custom coder](#custom-coders).
### Subtitle codecs
- `'webvtt'` - WebVTT
@@ -65,7 +69,7 @@ Mediabunny ships with built-in decoders and encoders for all audio PCM codecs, m
Not all codecs can be used with all containers. The following table specifies the supported codec-container combinations:
| | .mp4 | .mov | .mkv | .webm[^1] | .ogg | .mp3 | .wav | .aac | .flac | .ts |
| | .mp4 | .mov | .mkv | .webm[^2] | .ogg | .mp3 | .wav | .aac | .flac | .ts |
|:--------------:|:--------:|:-----:|:-----:|:---------:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|
| `'avc'` | ✓ | ✓ | ✓ | | | | | | | ✓ |
| `'hevc'` | ✓ | ✓ | ✓ | | | | | | | ✓ |
@@ -77,8 +81,8 @@ Not all codecs can be used with all containers. The following table specifies th
| `'mp3'` | ✓ | ✓ | ✓ | | | ✓ | | | | ✓ |
| `'vorbis'` | ✓ | ✓ | ✓ | ✓ | ✓ | | | | | |
| `'flac'` | ✓ | ✓ | ✓ | | | | | | ✓ | |
| `'ac3'`[^2] | ✓ | ✓ | ✓ | | | | | | | ✓ |
| `'eac3'`[^2] | ✓ | ✓ | ✓ | | | | | | | ✓ |
| `'ac3'` | ✓ | ✓ | ✓ | | | | | | | ✓ |
| `'eac3'` | ✓ | ✓ | ✓ | | | | | | | ✓ |
| `'pcm-u8'` | | ✓ | ✓ | | | | ✓ | | | |
| `'pcm-s8'` | | ✓ | | | | | | | | |
| `'pcm-s16'` | ✓ | ✓ | ✓ | | | | ✓ | | | |
@@ -96,8 +100,7 @@ Not all codecs can be used with all containers. The following table specifies th
| `'webvtt'`[^3] | (✓) | | (✓) | (✓) | | | | | | |
[^1]: WebM only supports a small subset of the codecs supported by Matroska. However, this library can technically read all codecs from a WebM that are supported by Matroska.
[^2]: AC-3 and E-AC-3 are not natively supported by WebCodecs. To encode or decode these codecs, you must provide a [custom coder](#custom-coders).
[^2]: WebM only supports a small subset of the codecs supported by Matroska. However, this library can technically read all codecs from a WebM that are supported by Matroska.
[^3]: WebVTT can only be written, not read.
## Querying codec encodability