Function CMVideoFormatDescriptionCreate 

pub unsafe extern "C" fn CMVideoFormatDescriptionCreate(
    allocator: CFAllocatorRef,
    codecType: CMVideoCodecType,
    width: i32,
    height: i32,
    extensions: CFDictionaryRef,
    formatDescriptionOut: *mut CMVideoFormatDescriptionRef,
) -> OSStatus

Apple SDK function CMVideoFormatDescriptionCreate.