---
title: alternateGroupID
framework: avfoundation
role: symbol
role_heading: Instance Property
path: avfoundation/avmovietrack/alternategroupid
---

# alternateGroupID

A value that identifies the track as a member of a particular alternate group.

## Declaration

```swift
var alternateGroupID: Int { get }
```

## See Also

### Retrieving track information

- [mediaDataStorage](avfoundation/avmovietrack/mediadatastorage.md)
- [mediaDecodeTimeRange](avfoundation/avmovietrack/mediadecodetimerange.md)
- [mediaPresentationTimeRange](avfoundation/avmovietrack/mediapresentationtimerange.md)