Thanks Nicolas for the pointer. I am trying to use xvfb with xpra for forwarding. However there I am experiencing a bottleneck. The capture is 4k, but the content ran via xpra is only 1/4th of the screen. Xpra client is at FullHD.
Discussed over the xpra bugtracker at http://xpra.org/trac/ticket/1036#comment:11, something is going wrong, but cannot say where?! To screencapture the virtual x instance, I used: $ ffmpeg -f x11grab -s 3840x2160 -i :99 -r 24 -deadline realtime -b:v 1M -threads 5 -qmin 0 -qmax 50 -crf 5 -preset ultrafast -f matroska 4k_xpra.mkv The capture looks like: http://picpaste.com/IgV8eLMl.jpg Any inputs appreciated. Wbr, /z On 11/12/15, Nicolas George <geo...@nsup.org> wrote: > Le duodi 22 brumaire, an CCXXIV, Zenny a écrit : >> 1. create a virtual xserver of 4k resolution without any physical >> display, and pipe to the physical screen (downsizing to FullHD ). > > http://www.x.org/archive/X11R7.6/doc/man/man1/Xvfb.1.xhtml > > Regards, > > -- > Nicolas George > _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user