[Aemstel]

I have done some more extensive testing the last 24 hours, and it drove me nearly insane Well not really, but you really start to lose focus after awhile, and it becomes nearly impossible to determine the error in delay.

I finally did the following:

1. Converted the sync test videos from http://editorsean.com/blog/49-audiovideosynctest to 23.976 fps using Handbrake.
2. Turned off the auto delay setting on my AVR. (not sure if it that's necessary, but to be sure it wouldn't interfere).
3. Set XBMC to: Vertical blank sync: always. Adjust display refresh rate to match video: always. Sync playback to display: drop / dupe audio.
4. I ran the converted test files within XBMC and determined I needed a delay of 160ms for 24p content. 50Hz was fine without delay. I set the 24p 160ms delay in advancedsettings.xml.

That's it. I think I can live with this. I've now told myself that there are no longer any sync issues. If I do notice any, it must be an error in the source video, or my brain is malfunctioning (both of which might actually be true )!