[FFmpeg-user] ffvhuff mkv playback issues and odd coloured artefacts

[Christoph Gerstbauer]

> I didn't have one defined
> https://github.com/kaihendry/recordmydesktop2.0/commit/0405b25a5c7a5673dfdc46590c4cdde37624b89a#diff-e8a37a8ec5e3503c434672a5ad54d1cc
>
> I was using something like:
>
> ffmpeg -f x11grab -s $res -i :0.0 -vcodec ffvhuff
>
So, when you open the file with ffmpeg, any pix_fmt must be shown. Which 
one is it?

br
Christoph Gerstbauer