Decoder Gremlins

[lemming]

You mean LAV decoder? Do you get the same blips with the DivX decoder?

Have tried both LAV & DIVx this morning, both blip with the MPEG1 decoder selected, both OK without...

[lemming]

There are 2 settings in the LAV codec that may or may not help - Synchronize Video to Audio check box - I have mine set off and Audio delay - I have mine on 80 ms, but my graphics processing & more important Plasma need that to keep mouth and sound in synch.

Will try these setting and see how it goes... Not sure if it is memory as turning off the AC3 decoder instaed of MPEG1 doesn't help?? I assume they uses similar??

[lemming]

Waiting for some inspiration guys ??

Have attached a sound grab of how bad it gets to after 1/2 an hour or so.... Continually turning the MPEG1 decoder on & off which isn't helping on the wife front...

Seems to me must be a bug if selecting a decoder for 1 scenario breaks another ??

Cheers Chris

[Reddwarf]

Have you tried using AC3Filter for MPEG audio? It works both on AC3 and MPEG audio.

[johnsonx42]

if his problem is the same as mine (and I think it is), using AC3Filter for both does not help.

[lemming]

Didn't let it run long enough to get as bad as the sample, but started to go pear shaped pretty much the same as usual....

[johnsonx42]

I've done a little testing on my system, and have found my symptoms are indeed indentical to Lemming's. Pausing then playing cures the problem for awhile, but not permanently like I thought before. The audio will eventually get choppy again. I will try disabling my Mpeg audio decoder, and see if using only the AC3 decoder resolves the problem. Unfortunately some of my channels have only Mpeg audio, so I'll have to do without them for awhile.

[lemming]

Sort of glad it's not just me ??

What's the tie in between selected decodes ?? Seems the mpeg1 decodes screws with both ac3 & he-acc?. Is this something npvr does, or is it handed off to windows play ?? Odd how recordings are never an issue, only a live stream from the capture card ??

[johnsonx42]

I have found that disabling the MPEG audio decoder completely cures the choppy audio on AC3 channels. Of course now I have no audio on analog channels, so it's no solution but does seem to pin blame the MPEG decoder somehow. I was using ac3filter for both ac3 and MPEG, but using different decoders for each type made no difference.

@sub: I know you're away now, but when you get back could you make a patch that simply assumes that whatever decoder is set for ac3 audio can also handle mpeg audio, without hooking up an additional decoder?

[sub]

@sub: I know you're away now, but when you get back could you make a patch that simply assumes that whatever decoder is set for ac3 audio can also handle mpeg audio, without hooking up an additional decoder?

There is already an experimental option that does exactly that, but I can't remember the details of exactly what you need to set. I didn't proceed with making it public because too few decoders allow this. From memory, AC3Filter was the only decoder i found that would work the way.