A reader object used to obtain the media data of an asset, either file-based or consisting of an assemblage of media data from multiple sources.
- iOS 4.1+
- macOS 10.7+
- Mac Catalyst 13.0+Beta
- tvOS 9.0+
AVAsset lets you:
Read raw un-decoded media samples directly from storage, obtain samples decoded into renderable forms.
The AVAsset pipelines are multithreaded internally. After you initiate reading with
init, a reader loads and processes a reasonable amount of sample data ahead of use so that retrieval operations such as
AVAsset) can have very low latency.
AVAsset is not intended for use with real-time sources, and its performance is not guaranteed for real-time operations.