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40 lines
897 B
Markdown
40 lines
897 B
Markdown
---
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description: μ-law companded PCM audio codec definition, defining legal codec strings, decoder configs, and packet data formats.
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---
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<script setup>
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import { VPBadge } from 'vitepress/theme'
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</script>
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<VPBadge type="info" text="Audio codec" />
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# μ-law PCM codec registration
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## Description
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The μ-law companded PCM audio codec, specified in [ITU-T G.711](https://www.itu.int/rec/T-REC-G.711) Tables 2a and 2b.
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## Codec ID
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```ts
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'ulaw'
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```
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## `EncodedPacket` data
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The packet's data must be a sequence of bytes of arbitrary length (divisible by the channel count), where each byte is a μ-law encoded PCM sample. For multichannel audio, samples from different channels are interleaved.
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## `EncodedPacket` type
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The packet's type is always `'key'`.
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## `AudioDecoderConfig` codec string
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```ts
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'ulaw'
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```
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## `AudioDecoderConfig` description
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`description` is not used for this codec.
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