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# 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.

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

---

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