[liquidskin76]

I'm into video encoding, and creating video backups from my BD/DVD collection so i'm well placed to carry out tests as i also still see the 250ms delay on AE builds. I did lots of testing a while back, however would like to recheck some stuff. Leave it with me, i'll do that tonight and update on it then.

If memory serves me right, basically, i saw differences in sync based on av container. For example, an M2TS file from a BD folder backup was fine on sync, however when the audio/video from that same BD folder was muxed to MKV using either MakeMKV or MKVMerge, sync was out.

If i give the MKV a 250ms audio delay (during mux using MKVMerge), then sync was good at 24p. Can't remember the sync issue when audio was decoded by XBMC to lpcm.

Now, as an interesting (and totally unrelated!) side note... not sure how audio is handled when played at 60Hz using 2:3 pull down, however even with that 250ms audio delay muxed into the MKV file, XBMC played it in perfect sync at 60Hz! I was expecting it to be out by 250ms!! Anyway...

Another interesting (and very very relevant) side note... again if memory serves me right, i saw the exact same sync problem using mpc-hc and refresh rate switching.

As well as testing sync on decoded audio, i'll also test sync with display set manually to 24Hz, and with refresh rate switching disabled.

Anyway, i'll get testing again tonight to confirm, and post an update. What i'd like to know is what container people are using when they see the sync issue? Is it only MKV?

Cheers

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I believe providing files for devs to test with won't be of any help. I've already covered that with dddamian, and on a file i had sync issues with, he didn't.

Cheers