An array containing the types of files the session can write.
- iOS 4.0+
- macOS 10.7+
- tvOS 9.0+
- Mac Catalyst 13.0+Beta
The types of files the session can write are determined by the asset and and export preset with which the session was initialized. If you need to determine the compatible file formats before initiating the export operation, use the
You can observe this property using Key-value observing.
var audioMix: AVAudioMix?
The parameters for audio mixing and an indication whether to enable nondefault audio mixing for export.
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