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mediabunny/docs/codec-registry/flac.md
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<script setup>
import { VPBadge } from 'vitepress/theme'
</script>
<VPBadge type="info" text="Audio codec" />
# FLAC codec registration
## Description
The Free Lossless Audio Codec (FLAC), specified in the [FLAC Format Specification](https://xiph.org/flac/format.html).
## Codec ID
```ts
'flac'
```
## `EncodedPacket` data
The packet's data must be a FLAC frame as described in the [FLAC Format Specification](https://xiph.org/flac/format.html).
## `EncodedPacket` type
The packet's type is always `'key'`.
## `AudioDecoderConfig` codec string
```ts
'flac'
```
## `AudioDecoderConfig` description
`description` must contain the bytes `0x66 0x4C 0x61 0x43` (the ASCII string `'fLaC'`), followed by a `STREAMINFO` metadata block as defined in Section 7 of the [FLAC Format Specification](https://xiph.org/flac/format.html).