Carl Eugen Hoyos wrote:
2016-09-08 16:17 GMT+02:00 Andy Furniss <[email protected]>:
Carl Eugen Hoyos wrote:
2016-09-08 12:01 GMT+02:00 Andy Furniss <[email protected]>:
I don't know what it is about x11grab/CSC with ffmpeg, but
on my old CPU gstreamer is twice as fast.
x11grab or xcb?
I guess xcb as I don't --enable anything related with configure.
Then please test if this is a regression over x11grab, use:
configure --disable-libxcb --enable-x11grab --enable-gpl
(It is very likely that nobody ever tested.)
It is a bit faster, comparing results I posted on users to new build -
(vsync 2 for consistency as that's how the old tests were done
it isn't really needed/makes no difference for -f null but was used
as I previously also tested -f rawvideo -y /dev/null and when
using -framerate with that it is essential).
xcb -> x11grab.
ffmpeg -vsync 2 -framerate 200 -f x11grab -s 1920x1080 -i :0.0 -vframes
1000 -f null -
138 -> 179 fps
ffmpeg -vsync 2 -framerate 200 -f x11grab -s 1920x1080 -i :0.0 -vframes
1000 -pix_fmt yuv420p -f null -
47 -> 56 fps
ffmpeg -vsync 2 -framerate 200 -f x11grab -s 1920x1080 -i :0.0 -vframes
1000 -pix_fmt nv12 -f null -
33 -> 37 fps
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