---
title: mVariableFramesInPacket
framework: coreaudiotypes
role: symbol
role_heading: Instance Property
path: coreaudiotypes/audiostreampacketdescription/mvariableframesinpacket
---

# mVariableFramesInPacket

The number of sample frames of data in the packet.

## Declaration

```swift
var mVariableFramesInPacket: UInt32
```

## Discussion

Discussion For formats with a constant number of frames per packet, this value is 0.

## See Also

### Inspecting an audio stream packet description

- [mDataByteSize](coreaudiotypes/audiostreampacketdescription/mdatabytesize.md)
- [mStartOffset](coreaudiotypes/audiostreampacketdescription/mstartoffset.md)