[FFmpeg-user] top left pixel coordinates in a screen capture ...

[Albretch Mueller]

 in order to do some screen capture using ffmpeg you would go:
~
 ffmpeg -f x11grab -r 25 -s 1024x768 -i :0.0+100,200 -f alsa -ac 2 -i
pulse output.flv
~
 where (100, 200) would be the top left position of the rectangular
area you would capture and output.flv will contain the audio also, but
how do you get the point  (100, 200)?
~
 lbrtchx