Sound unsynced for some videos in XBMC

Hi, for a month or two I've noticed that the regularly produced videos get unsynced sound when played in XBMC. However, Patrick's videos and trailers do not exhibit the same behaviour, which makes me think that it's a question of video encoding rather than an XBMC problem.

Related to that, I think, is that instead of pausing to buffer, the video starts stuttering.

This is probably because most/all Quick Looks nowadays are at 60 FPS instead of the old 30 FPS. Patrick's videos (among others) are still at 30 FPS though.

Not sure that XBMC handles 60 FPS streaming that well (yet), so probably more likely a problem on that end, but I dunno :)