---
title: AVFragmentedMovieTrackTotalSampleDataLengthDidChangeNotification
framework: avfoundation
role: symbol
role_heading: Global Variable
path: avfoundation/avfragmentedmovietracktotalsampledatalengthdidchangenotification
---

# AVFragmentedMovieTrackTotalSampleDataLengthDidChangeNotification

## Declaration

```occ
extern NSString * const AVFragmentedMovieTrackTotalSampleDataLengthDidChangeNotification;
```

## Discussion

Discussion This notification name has been deprecated. Use either AVFragmentedMovieTrackTimeRangeDidChangeNotification or AVFragmentedMovieTrackSegmentsDidChangeNotification instead; in either case, you can assume that timing changes to fragmented tracks result in changes to the total length of the sample data used by the track.

## See Also

### Notifications

- [AVAssetChapterMetadataGroupsDidChangeNotification](avfoundation/avassetchaptermetadatagroupsdidchangenotification.md)
- [AVAssetContainsFragmentsDidChangeNotification](avfoundation/avassetcontainsfragmentsdidchangenotification.md)
- [AVAssetDurationDidChangeNotification](avfoundation/avassetdurationdidchangenotification.md)
- [AVAssetMediaSelectionGroupsDidChangeNotification](avfoundation/avassetmediaselectiongroupsdidchangenotification.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)
- [AVFragmentedMovieWasDefragmentedNotification](avfoundation/avfragmentedmoviewasdefragmentednotification.md)