As far as I know, this is a DVB driver issue. The DVB API seems to only synchronize audio and video on stream start, and not later on. If complete audio or video frames get dropped, then the two streams get out of sync and stay out of sync. This only affects unreliable streams, so it works quite well on most systems.
It would be quite difficult to fix such stream errors before passing the stream to DVB, so I guess this is either a driver or a firmware issue.
Hmmm - this seems to only affect recordings though and not live TV?
My TV, DVB-T set top box etc all don't suffer from this problem and can resync audio/video so surely it cannot be that difficult to address? It is a requirement of all DVB devices..
Cheers,
morf
Morfsta wrote:
As far as I know, this is a DVB driver issue. The DVB API seems to only synchronize audio and video on stream start, and not later on. If complete audio or video frames get dropped, then the two streams get out of sync and stay out of sync. This only affects unreliable streams, so it works quite well on most systems.
It would be quite difficult to fix such stream errors before passing the stream to DVB, so I guess this is either a driver or a firmware issue.
Hmmm - this seems to only affect recordings though and not live TV?
At least for me this problem only appears with recordings thus should be fixable. Maybe DVB driver API needs to be extended to give information about the sync status and allow forced sync or something similar.
Br, Pasi
On Mon, 10 Jul 2006 20:58:13 +0300 Pasi Juppo pasi.juppo@iki.fi wrote:
At least for me this problem only appears with recordings thus should be fixable. Maybe DVB driver API needs to be extended to give information about the sync status and allow forced sync or something similar.
My guess is that you're using a FF DVB card as your output device, and in that case the firmware is the one to blame. Personally I've noticed many severe problems with those new AC3 enabled firmwares: it's not just the loss of A/V sync in recordings, but some of the firmwares cannot handle the PTS correctly which makes for example the DVB subtitling to behave unpredictable.
I'd still vote for using the old version 261d (or even older), if you want as few annoyances as possible...
BR,
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Morfsta -
Pasi Juppo -
Rolf Ahrenberg