[mythtv-users] 0.25 Major AV sync problems

[Richard]

On 08/06/12 01:11, David Moore wrote:
> Thanks for the confirmations that I'm not the only one seeing this 
> problem. FYI I have created a ticket #10797.

I've done a little bit more testing but I can't say that I've managed to 
home in on anything in particular.

I'm using an NVidia 8400GS card and sound output via the on-board Intel 
chipset.

If I use the 'VDPAU Normal' profile, I get the problem.  If I switch it 
just 'Normal', everything seems to be ok (apart from not looking as nice).

With audio set to SPDIF, I get the problem.  If I change audio to 
analogue, I don't.

When I get the problem, the A/V sync value seems to stay pretty much 
fixed (maybe a little bit of jitter in the hundredths range), changing 
either the video or audio settings to stop the problem and it changes 
almost constantly.

This is on my main box in the living room, running a fresh install of 
Mythbuntu 12.04.

I cannot reproduce the problem on my desktop.  It doesn't matter whether 
what video or audio settings I use, everything stays in sync (I've no 
way of listening to digital audio on the desktop but the A/V sync value 
looks ok).  Both machines have the same NVidia card in them (at least, 
it's the same chipset), but the desktop machine does have slightly newer 
NVidia drivers.

Here are the main differences:

Mythbox
-----------
NVidia 295.40
82801JI (ICH10 Family) HD Audio Controller
MythTV Version : v0.25.1

Desktop
-----------
NVidia 295.53
6 Series/C200 Series Chipset Family High Definition Audio Controller
MythTV Version : v0.25.1-1-g016db04


Does this give anyone any ideas?

Richard.