Hello
I have installed OBS with the rkmpp ffmpeg version ( nyanmisaka/ffmpeg-rockchip: FFmpeg with async and zero-copy Rockchip MPP & RGA support) on my Radxa Rock 5B.
On the output i can select the rkmpp encoder but if i start encoding with obs the cpu goes to over 60% load.
if i use only ffmpeg the cpu usage is much lower onle 1 cpu core on 100% not all 8 on 60%
Obs self run without problems and have a very low cpu usage. only the combination with obs and encoding make a high cpu usage.
I have make a copy from the ffmpeg-nvenc encoder and change it to use the rkmpp encoder for test. so i dont have to use the advanced record function but the same problem.
if i run a test witzh ffmpeg. ffmpeg -hide_banner -f lavfi -i testsrc2=duration=300:size=1920x1080:rate=30 -c:v h264_rkmpp test.mp4 i got like 80 fps