Sound delay when using 24hz, why?

So apparently there's no fix for this yet?
Using Win 7 32 w/ATI 5670, and using the onboard optical audio out. If I could have access to the innards of XBMC I could do experiments. But maybe the support team has already done this? (one would hope)

As mentioned in another thread, I pretty much solved this by enabling "Adjust display refresh rate to match video" and "Sync playback to display" in Video settings » Playback.

I was too quick. Video stutters when I set those options. I'm back to square one.

monti Wrote:I was too quick. Video stutters when I set those options. I'm back to square one.

Yea, I've tried all kinds of settings too, but nothing seems to fix it. It just looks like it's internal to the decoding engine. May not even be with XBMC per say, but with the engine it uses. I think I have a global 200ms delay set for all audio. If I ever play something other than 24p, I'm jacked and have to remove the delay, but my viewing of 24p outweighs other modes at the moment. So I'll just have to live with this "patch".

Skram0 Wrote:Yea, I've tried all kinds of settings too, but nothing seems to fix it. It just looks like it's internal to the decoding engine. May not even be with XBMC per say, but with the engine it uses. I think I have a global 200ms delay set for all audio. If I ever play something other than 24p, I'm jacked and have to remove the delay, but my viewing of 24p outweighs other modes at the moment. So I'll just have to live with this "patch".

That's what I've ended up with as well. A global delay of 220ms. This is just a workaround, though, I really hope the XBMC devs figure this one out.

I noticed this recently showed up on the trac discussion:

Quote:Changed 4 weeks ago by frotsen

This problems appears if auto refresh rate on and you mkv that has 5 or more reference frames. If i remix the movie with 2 reference frames it plays fine

This would explain why it only effects some and not all MKV files but I'm not sure how this relates to AVI(xvid) issues. Unfortunately I've never done any encoding myself and only have a vague idea of what reference frames are. How would one determine how many reference frames used?

How do I change the delay for ALL my movies? Same problem here

lapino Wrote:How do I change the delay for ALL my movies? Same problem here

Select the "Make default for all movies" option in the same menu where you set the audio delay. Works for me.

In any case, it's interesting that this thread came back from the dead. I just enabled 24hz on my natty Linux setup using nightly builds and came around to the same 250-300ms delay independently.

Rob

Just got a 24 Hz capable Plasma and got an instant audio delay problem. Mine is at 0.100. Any fix yet? 60Hz works fine.

Has there been any progress on this matter?

I have the same issue on Eden 11.0... about 200ms delay on almost all mkv HD files. (Not all however... not sure what makes some files sync while others dont)