[FFmpeg-user] How i can use vulkan hw accel and vulkan filters for streaming my desktop. Is KMS grab working with audio recording?

[Stephan Monecke]

I don't have vulkan here but that's what I use with QSV. Maybe it is
an inspiration to you:

  ffmpeg -video_size "$resolution"\
  ¦ ¦ -loglevel warning           \
  ¦ ¦ -probesize 100M             \
  ¦ ¦ -framerate 25               \
  ¦ ¦ -thread_queue_size 1024     \
  ¦ ¦ -init_hw_device qsv=hw -filter_hw_device hw \
  ¦ ¦ -f x11grab -i ":0.0+$xpos,$ypos" \
  ¦ ¦ -thread_queue_size 4096     \
  ¦ ¦ -use_wallclock_as_timestamps 1 -fflags +genpts \
  ¦ ¦ -f pulse -i "${audio_input}"\
  ¦ ¦ -c:a aac                \
  ¦ ¦ -b:a 128k                    \
  ¦ ¦ -vf "format=yuv420p,hwupload=extra_hw_frames=64,format=qsv,vpp_qsv=detail=50:framerate=25,scale_qsv=w=-1:h=720:mode=2:extra_hw_frames=64"
\
  ¦ ¦ -global_quality:v 30  \
  ¦ ¦ -look_ahead 1               \
  ¦ ¦ -look_ahead_depth 25        \
  ¦ ¦ -c:v h264_qsv               \
  ¦ ¦ -profile:v high             \
  ¦ ¦ -level:v 5.1                \
  ¦ ¦ -preset veryslow            \
  ¦ ¦ -bf 16                      \
  ¦ ¦ -trellis 2                  \
  ¦ ¦ -f flv \
  ¦ ¦ rtmp://url

Where resolution is in the format e.g. 1920x1080; xpos, ypos are
integers -- possibly zero, if you take the complete screen.


Cheers,

Stephan

Am Di., 17. Nov. 2020 um 08:27 Uhr schrieb KoreanFanOfficial
<koreanfanofficial at gmail.com>:
>
> I have fx-8300 and rx560. I want to stream my desktop to any streaming rtmp
> platform with vulkan hw accel and vulkan filters but i can't find any code
> for amd video card. I want to stream video and audio with 30 fps frame
> rate, scaled output video 720p. Can someone share code for this with
> x11grab and kmsgrab? My ffmpeg shows that  vulkan hw accel and vulkan
> filters are available.
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