[MPlayer-users] lavf_matroska + libass = subtitle flicker, sample included

[Diogo 'Kovensky' Franco]

There is a bug that happens when I use '-demuxer lavf' (or if I used a
revision a few days older) with subtitle rendering with libass. The
subtitles flicker between the previous state and the next. This doesn't
happen with MPlayer's old renderer.

I made a video from an anime using mplayer as a yuv4mpeg source to x264,
and I slowed down the parts where there are transitions between
nothing/subtitles and subtitle/next_subtitle. You can notice the
subtitle goes back and forth between the previous/next state before
finally settling on the current one.

I uploaded it here: http://www.mediafire.com/?tllaeadt5pp