[FFmpeg-user] ffmpeg doesn't recognize the correct X resolusion when using x11grab

[Xeslaro]

  yeah sorry you're right, the reason that caused my problem is that i should put the -s option before the -i option so ffmpeg will consider it as an input option instead of an output option.
On Thu, May 16, 2013 at 10:31:12AM +0000, Paul B Mahol wrote:
> Your reasoning is invalid, ffmpeg does not think anything about your
> screen resolution.
> 
> Defaults resolution (when -video_size is not set) that x11grab is
> using is vga aka 640x480.