Global Variable


The profile and level for the encoded bitstream.


const CFStringRef kVTCompressionPropertyKey_ProfileLevel;


Available profiles and levels vary across formats and among video encoders.

Video encoders should use standard keys when available, and follow standard patterns when standard keys are not available.

See Also

Bitstream Configuration

Beta Software

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