This proprietary new AVC profile from SONY is mainly used for video recording.
The VCU encoder can produce xAVC Intra or xAVC Long GOP bitstreams.
To use this profile, you need to provide the information required to create the XAVC bitstream, as mentioned in the specifications. For instance, you must provide at least the resolution, the framerate, and the clock ratio.
XAVC is mainly used as a video recording option in cameras.
For more information, see XAVC in H.264/H.265 Video Codec Unit LogiCORE IP Product Guide (PG252).