The different video orientation methods.
Flags related to the time code information. For drop frame, only 30000/1001 and 60000/1001 frame rates are supported.
#GstVideoDirectionInterface interface.
#GstVideoOverlay interface
Supported frame rates: 30000/1001, 60000/1001 (both with and without drop frame), and integer frame rates e.g. 25/1, 30/1, 50/1, 60/1.