[FFmpeg-cvslog] Support changing pixel formats on avfilter input.

[Stefano Sabatini]

On date Monday 2011-04-04 10:59:50 +0200, Stefano Sabatini wrote:
> On date Monday 2011-04-04 03:15:04 +0200, Michael Niedermayer wrote:
[...]
> It's not the proper way to fix it, this should be done by implementing
> filterchain re-configuration rather than adding an hack in a random
> source. I don't mind if you add the code to ffmpeg.c, but extending a
> public interface this way is not acceptable IMO.

Also note that resampling code is already present in ffmpeg.c, but
disabled for the CONFIG_AVFILTER path.