I have this working command:
avconv -f x11grab -r 30 -s 1280x1024 -i :0.0 -c:v mpeg4 -b:v 1000k -vf
"hflip" -vf "scale=640:480" -sws_flags "neighbor" -f avi - | avplay -i -
(it capture the entire screen and shows it in a 640x480 30fps window,
with neighbor interpolation and hflip effect,)
But there's a problem. It starts capturing and showing at 30fps. I run
another application (blenderplayer) and the avconv/avplay starts
lowering the FPS up to get freeze. When I click in the window, it gets
back to 30... and do it again. I did nice -20 to avconv and avplay, but
there's no difference.
I'm on Ubuntu 14.04.
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