[FFmpeg-user] issue with kmsgrab

[Nasty Phoenix]

Le samedi 26 décembre 2020 à 10:09 +0100, Nasty Phoenix a écrit :
> Hello
> 
> I encountered problem using kmsgrab
> 
> theflyingman at theflyingman-Aspire-5745:~/Vidéos$ sudo ffmpeg -loglevel
> verbose -v verbose -y -f kmsgrab -i - -vf 'hwdownload,format=bgr0'
> /home/theflyingman/Vidéos/output.mp4
> ffmpeg version 4.2.4-1ubuntu0.1 Copyright (c) 2000-2020 the FFmpeg
> developers
>   built with gcc 9 (Ubuntu 9.3.0-10ubuntu2)
>   configuration: --prefix=/usr --extra-version=1ubuntu0.1 --
> toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --
> incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --
> disable-stripping --enable-avresample --disable-filter=resample --
> enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --
> enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --
> enable-libcdio --enable-libcodec2 --enable-libflite --enable-
> libfontconfig --enable-libfreetype --enable-libfribidi --enable-
> libgme
> --enable-libgsm --enable-libjack --enable-libmp3lame --enable-
> libmysofa 
> --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-
> libpulse --enable-librsvg --enable-librubberband --enable-libshine --
> enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh
> --
> enable-libtheora --enable-libtwolame --enable-libvidstab --enable-
> libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --
> enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --
> enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-
> opencl --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-
> libdrm 
> --enable-libiec61883 --enable-nvenc --enable-chromaprint --enable-
> frei0r --enable-libx264 --enable-shared
>   libavutil      56. 31.100 / 56. 31.100
>   libavcodec     58. 54.100 / 58. 54.100
>   libavformat    58. 29.100 / 58. 29.100
>   libavdevice    58.  8.100 / 58.  8.100
>   libavfilter     7. 57.100 /  7. 57.100
>   libavresample   4.  0.  0 /  4.  0.  0
>   libswscale      5.  5.100 /  5.  5.100
>   libswresample   3.  5.100 /  3.  5.100
>   libpostproc    55.  5.100 / 55.  5.100
> 
> 
> You can see the ffmpeg logs with my card0 and renderD128 (the devices
> i
> found in /dev/dri/) in https://pastebin.com/BbP0Ea2Q
> 
> Everything seems ok but the video file is a grey/blank screen with
> some
> small blackline
> 
> I don't understand and my goal is after the video will be ok to add
> sound with this videoscreencapture.
> 
> Regards
> 
> NastyPhoenix
> 
> 
>