Hi,
I'm using vdr 1.6.0 along with vdr-xine 0.8.2, xine-lib 1.1.15 and xine-ui 0.99.5 on gentoo.
Recently, I discovered A/V sync problems on my vdr.
My family confirms that these problems have been there for a while now.
So, unfortunately, I can't pinpoint which one of my changes led to the behaviour described as follows:
Mostly, when I switch channels, it takes a while (I would estimate around a second) for the video and the audio to sync.
But sometimes, audio and video stay out of sync, then either audio or video or both seem to stop, then, for a short while, they stay synced, again, then either audio or video or both stop, then they get out of sync, and so on...
This behaviour can occur for recordings as well.
I could neither find anything peculiar in the xine-ui stdout messages nor in vdr's stdout messages or logs that would explain that behaviour.
Looking for people with similar problems, I fould Simon Baxter's problem description from 2008-05-04 on this list.
He switched from vdr-xine 0.8.2 back to version 0.8.0.
That seemed to do the trick for me as well. So far, there is no alternation between A/V going out of and back into sync anymore.
Above, I mentioned I had made a few changes:
At some point I thought, I might reduce channel switching time by using the syncearly patch. I tried this for a while but wasn't really happy with it as it didn't seem to reduce channel switching time significantly and it took much longer to change audio streams (language of a programme). So, eventually, I recompiled vdr without the syncearly patch.
A lot of things seem to have changed after xine-lib 1.1.8 (which is needed for vdr-xine 0.8.0) which I honestly cannot oversee.
As xine-lib 1.1.8 won't be supported forever, I wanted to find out what could cause my problems in newer versions.
So I wanted to ask on this list, if anyone can pinpoint me to things I could try out in order to fix this issue in newer versions.
I get the same audio/video sync problems, on recordings too. but it will happen predictably after advertisements was cut out, it will start to go out of sync by the first cut. I also noticed that my cpu usage increased and my system's clock seems to drift into the future.
2.6.24-gentoo-r3 #1 Sun Mar 23 16:04:11 SAST 2008 i686 Intel(R) Pentium(R) 4 CPU 2.40GHz GenuineIntel GNU/Linux
media-video/vdr-1.6.0_p1(21:06:15 25/04/2008)(cmdsubmenu cutterlimit cutterqueue dolbyinrec dvbplayer jumpplay liemikuutio menuorg noepg syncearly timerinfo) media-plugins/vdr-xineliboutput-1.0.1 media-libs/xine-lib-1.1.11.1
unfortunately I cannot upload a sample, since my service provider has set a limit to my upload speed and causes time outs :(
Klaus mentioned that he can only help, if I try without any patches.
Theunis
2008/10/7 Reinhold May Reinhold.May@gmx.de
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Reinhold May -
Theunis Potgieter