GT King Pro - Gnome Edition upgraded successfully and rpi-ffmpeg provide some limited vpu hw acceleration with mpv. Thank you.
Edit:
Hi @Darksky
I decided to put rpi-ffmpeg in the repo so it will be there when the mirrors sync.
The rpi-ffmpeg does works with mpv with vpu hw acceleration (may up to h264 1080p/60) on GT King Pro. Thanks.