The time range exported from the source.
- iOS 4.0+
- macOS 10.7+
- Mac Catalyst 13.0+Beta
- tvOS 9.0+
The default time range of an export session is
kCMTimePositiveInfinity, meaning that (modulo a possible limit on file length) the full duration of the asset will be exported.
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.
This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.Learn more about using Apple's beta software