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# mFramesPerPacket

The number of frames in a packet of audio data.

```
var mFramesPerPacket: UInt32
```

## Discussion

For uncompressed audio, the value is 1. For variable bit-rate formats, the value is a larger fixed number, such as 1024 for AAC. For formats with a variable number of frames per packet, such as Ogg Vorbis, set this field to `0`.

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