[Warner306]

Sometimes I have had this problem if the refresh rate is at 24.000 instead of 23.976. Make sure that your 24p is actually 23.976.

I noticed this today too. But not on all 23.976fps movies. Seems the audio (XBMC 13.2) is about 200ms ahead, thus rather noticable. I tried playing the same movie on my PC (instead of the same XBMC as installed on my media player). There are only 2 variables left: Ethernet vs. direct access, and monitor vs. TV. My media center can handle >50MBps easily, so it's not Ethernet. It's not fullscreen either.

I even tried encoding the audio to LPCM, thinking it would make things easier for XBMC. It didn't.

I don't have the 24p bug, btw.

EDIT: I forgot to mention the movie syncs just fine on my desktop XBMC.

I'm not an expert, but I think it is the TV's fault for not reporting the refresh rate correctly. That's not a fact but a strong suspicion. Some computer hardware may be better or worse at dealing with this. But I've tried three different configurations of hardware on the same TV and wound up with the same result.

Adding Reclock to DS Player or MPC-HC seems to work the best in all circumstances. But, even then, some content is still slightly out-of-sync. In the end, I went back to 60p playback after seeing 24p judder, artifacts and other tradeoffs that negate the small advantage of a native frame rate. I would prefer 24p playback. But even when it works, it still far from perfect in the home theatre environment.