---
title: AVAssetMediaSelectionGroupsDidChangeNotification
framework: avfoundation
role: symbol
role_heading: Global Variable
path: avfoundation/avassetmediaselectiongroupsdidchangenotification
---

# AVAssetMediaSelectionGroupsDidChangeNotification

Posted when the collection of media selection groups provided by an AVAsset changes and when any of the contents of its media selection groups change, but only for changes that occur after the status of the value of @“availableMediaCharacteristicsWithMediaSelectionOptions” has reached AVKeyValueStatusLoaded.

## Declaration

```occ
extern NSString * const AVAssetMediaSelectionGroupsDidChangeNotification;
```

## See Also

### Notifications

- [AVAssetChapterMetadataGroupsDidChangeNotification](avfoundation/avassetchaptermetadatagroupsdidchangenotification.md)
- [AVAssetContainsFragmentsDidChangeNotification](avfoundation/avassetcontainsfragmentsdidchangenotification.md)
- [AVAssetDurationDidChangeNotification](avfoundation/avassetdurationdidchangenotification.md)
- [AVAssetTrackSegmentsDidChangeNotification](avfoundation/avassettracksegmentsdidchangenotification.md)
- [AVAssetTrackTimeRangeDidChangeNotification](avfoundation/avassettracktimerangedidchangenotification.md)
- [AVAssetTrackTrackAssociationsDidChangeNotification](avfoundation/avassettracktrackassociationsdidchangenotification.md)
- [AVAssetWasDefragmentedNotification](avfoundation/avassetwasdefragmentednotification.md)
- [AVFragmentedMovieContainsMovieFragmentsDidChangeNotification](avfoundation/avfragmentedmoviecontainsmoviefragmentsdidchangenotification.md)
- [AVFragmentedMovieDurationDidChangeNotification](avfoundation/avfragmentedmoviedurationdidchangenotification.md)
- [AVFragmentedMovieTrackSegmentsDidChangeNotification](avfoundation/avfragmentedmovietracksegmentsdidchangenotification.md)
- [AVFragmentedMovieTrackTimeRangeDidChangeNotification](avfoundation/avfragmentedmovietracktimerangedidchangenotification.md)
- [AVFragmentedMovieTrackTotalSampleDataLengthDidChangeNotification](avfoundation/avfragmentedmovietracktotalsampledatalengthdidchangenotification.md)
- [AVFragmentedMovieWasDefragmentedNotification](avfoundation/avfragmentedmoviewasdefragmentednotification.md)