[FFmpeg-user] Screencast looks foggy

[Roger Pack]

On 11/16/12, Andre Kloth <ffmpeg-users at blubbmon.de> wrote:
> Hi,
>
> when I record a screencast for a presentation the video looks "foggy":
>
>   http://blubbmon.de/ffmpeg/test.mkv
>
> You can see this "fog" at the white background or the red colored lines (and
>
> especially with black background - not recorded in the video). On the screen
>
> these lines appear correctly as strong red (in Qt it's just #ff0000).
>
> My recording command is (output is attached):
>
> ffmpeg -f x11grab -r 25 -s 1680x1050 -i :0.0 -vcodec libx264 -preset
> ultrafast
> -crf 0 -sameq -threads 0 -timelimit 1800 test.mkv

what about ffplay with x11grab?