Lip sync

[mvallevand]

NPVR/GBPVR doesnt really play any active role in low level stuff like when audio samples are played and when video frames are shown

With PVRx2, where I don't have any LiveTV sync issues, it doesn't put HE-AAC decoders on LiveTV (I only have ac3 and mp2). I have found if I disable HE-AAC or if I use the Divx HE-AAC decoder and not MONOGRAM on NPVR I also don't have any LiveTV sync issues.

Martin

[Reddwarf]

With PVRx2, where I don't have any LiveTV sync issues, it doesn't put HE-AAC decoders on LiveTV (I only have ac3 and mp2). I have found if I disable HE-AAC or if I use the Divx HE-AAC decoder and not MONOGRAM on NPVR I also don't have any LiveTV sync issues.

Martin

I don't use Monogram anymore on any of my npvr installations, I'v switched them all to DivX-HEAAC decoder.

[lemming]

I'll try the Divx decoder and see if it helps me as well..

Is there a difference between live TV from the tuner and playing a recorded TS file from the Hdd ?? My problem is definitely much worse with recordings.

Also, how do I set the default audio stream per channel?? I would like TV3 to be AC3 since I have it attached to an amp.

[Reddwarf]

Also, how do I set the default audio stream per channel?? I would like TV3 to be AC3 since I have it attached to an amp.

There is a setting in Config.xml, PreferAC3(something), but I seem to remember that it had unfortunate sideeffects. It was discussed in this forum a while ago.

[Reddwarf]

And if I start a recording and right after start to play it on the client audio and video is perfectly in sync. So what is the big difference between playing from a file and playing from live-tv?

Bump

[sub]

And if I start a recording and right after start to play it on the client audio and video is perfectly in sync. So what is the big difference between playing from a file and playing from live-tv?

Nothing significant. The data can arrive a bit more bursty from some devices though when in live tv. For the most part it's the same.

[lemming]

So you expect the TS file to play "better" than from the tuner direct??

Any reason then I should see a non existent to slight lip sync from live TV, then seconds different from TS??

[sub]

Sorry, I dont know. I've never had any problems with lip sync except when I've got the audio renderer set to something other than 'system default'.

[Basher52]

I've had lip sync problems with Live TV sometimes but I now know why.
When I "use" the CPU too much, like up to 90% or such the sync seem to drift.
Sometime it just needs to lower the CPU usage and sometimes I need to restart the Live TV watching to get it normal again.

Maybe this has nothing to do with your problem but I thought I might tell anyways.

(Still using 147)

[ga_mueller]

When I "use" the CPU too much, like up to 90% or such the sync seem to drift. (Still using 147)

+1. On my wimpy Atom system, with no DXVA, playing MPEG2 HDTV, with CPU usage >30%, A/V is not sync'ed.