[FFmpeg-user] FFMPEG opencl hwaccel, opencl tonemap, vulcan hw accel for record desktop/streaming

DEF shaker.doc at gmail.com
Wed May 4 06:07:55 EEST 2022

On Tue, 3 May 2022 at 15:13, KoreanFanOfficial
<koreanfanofficial at gmail.com> wrote:
> ffmpeg -y -vsync 0 -r 25 -video_size 1920x1080 -f x11grab -i :0 -f alsa -i
> default -vf 'scale=1280x720,format=nv12' -c:v libx264 -preset ultrafast
> -profile baseline -sws_flags fast_bilinear -b:v 4500k -maxrate 4500k
> -minrate 4500k -bufsize 4500k -c:a aac -b:a 96k -f flv soft.flv
> this is my default command for record

I cannot see what you are tonemapping.

replace your c:v libx264 with -c:v h264_mf  and omit -preset ultrafast
-profile baseline -sws_flags fast_bilinear.

I think -vf 'scale=1280x720,format=nv12' is needed when you use other
hardware acceleration.


> вт, 3 мая 2022 г. в 09:41, Def Etienne <shaker.doc at gmail.com>:
> >
> >

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