24p and audio sync issues - Printable Version
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- Hack_kid - 2011-12-28 15:37
So basically this setting doesnt work? then it should be removed
- Hack_kid - 2011-12-28 15:40
also a observation.... when switch refresh rate ISNT Set i noticed videsos play at a stead 23.98 ftps if switching refreshrate is enabled it bounces between 23.95 and 23.98 now call me crazy but isnt .03 ummmm 3/100 of a second which comes out to 300ms right? its 5am so maybe i'm just tired but it make sense as for me my audio is always 200 to 300 ms too fast but its not constant it goes in and out of sync well tahts BECSAUSE the FPS is boncing! i hope i didnt make myself look stupid here
- robl45 - 2011-12-28 15:47
so basically nvidia wins on the audio sync issues, however from what I've heard, you can't use nvidia with mpc-hc and actually have smooth video. this is frustrating to say the least. best i can get in mpc-hc is like one jutter every 20 minutes or so. with aero, all that is elimintated it just stutters all through out the film which i understand is not an issue with ATI.
i'm reencoding an xvid movie today so tonight i can see if that fixes that issue on xbmc.
i too nice the same thing as hack_kid. while my audio stays in sync on h264. I can see the frame rate doesn't look right, it bounces around even though its not switching refresh rates when the movie starts. so I set my desktop to 24hz, actually its custom res on nvidia thats approx 23.97542. I play the movie, and there is no refresh switch so it should be on those settings, but when i look on the display, it seems its speeding things up or something.
as for the sync settings, I didn't like sync to audio clock, it seemed to produce jitter for me, drop/dupe audio seems to work the best.
- robl45 - 2011-12-29 05:48
i reencoded my avi that was off on sync to mkv with ripbot, sync is now perfect. its an xbmc issue.
- StinDaWg - 2011-12-30 00:32
I have tried every combination of sync to display and adjust refresh on my ati 5450 and Panasonic plasma, and audio does not stay in sync 100% of the time ever. I can't believe this has never been fixed.
- robl45 - 2011-12-31 09:07
StinDaWg Wrote:I have tried every combination of sync to display and adjust refresh on my ati 5450 and Panasonic plasma, and audio does not stay in sync 100% of the time ever. I can't believe this has never been fixed.
which version are you using? the latest eden seems to have a problem with sync to display, i confirmed that this evening.
video clock drop/dupe audio seems to work best. i think audio clock jitters a bit and i tried resample with my audio engine build and it was doing slow motion so something messed up there.
i can at least do h264 correctly but its amazing this hasn't been fixed yet.
- StinDaWg - 2011-12-31 23:38
I've been using the nightlies all year and now beta 1. It doesn't matter what settings I use, 23.976 or 24p content is never in sync 100% of the time.
- robl45 - 2011-12-31 23:45
StinDaWg Wrote:I've been using the nightlies all year and now beta 1. It doesn't matter what settings I use, 23.976 or 24p content is never in sync 100% of the time.
then that seems to be an ATI problem with xbmc, so two distinct problems here. i have no sync problems with h264 on the versions before eden, even on eden the audio is in sync, but there is a problem with sync to display on eden.
maybe the resolution isn't set right on ATI or the drivers are interfering in someway?
- robl45 - 2012-02-12 09:02
i solved the problem for now. use mpc-hc with madvr and reclock as audio render as external player rendering xbmc as just a GUI.
yea, i'm being a little sarcastic, but using two remotes and having playback that works beats only having x264 capability that you have to check every few minutes to see if the sync to display is actually working correctly.
and no disrespect to any of the developers, but it seems clear no one wants to fix the problem and while a possible solution has been suggested, i'm not programmer so i can't do anything about it.
- PatrickBateman - 2012-02-12 15:55
robl45 Wrote:i solved the problem for now. use mpc-hc with madvr and reclock as audio render as external player rendering xbmc as just a GUI.
I had real issues with sync at 24p but I have began using DDDamians beta 3 build with the AVSync fix and DanielaE HD audio patch merged.
Ive set a global delay of -80 (to allow for any processing) and an advancedsettings for 23/24hz content to be set to a specific delay (currently -125 for me)
I'm now enjoying full hd audio (dts-ma truehd etc), all the latest Eden beta 3 features and the avsync fix for 24p material.
Ymmv butt could be worth a try as it has worked for me 100%. I'm actually content now with what those guys have done as they have created a pretty much flawless XBMC HD Audio version with perfect 24p sync fix.
Give it a try it may work for you too.
If not, no harm done