The settings used by the output.
- iOS 4.1+
- macOS 10.7+
- Mac Catalyst 13.0+
- tvOS 9.0+
The value is a dictionary that contains values for keys from either Linear_PCM_Format_Settingsfor audio tracks or
CVPixel for video tracks. A value of
nil indicates that the output will return samples in their original format as stored in the target track.