The boundary, in bytes, for aligning media chunks.
- iOS 8.0+
- macOS 10.10+
- Mac Catalyst 13.0+
- tvOS 9.0+
This property supports file types that support media chunk alignment, such as QuickTime Movie files. The default value is
0, which means that the receiver will choose an appropriate default value. A value of
1 implies that no padding should be used to achieve a particular chunk alignment. It is an error to set a negative value for chunk alignment.
This property cannot be set after
start has been called for the receiver.