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Audio Skipping Issue Live TV

Audio Skipping Issue Live TV
johnsonx42
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#11
2014-12-03, 04:49 PM
Zeb Wrote:@johnsonx42: If you set ForcedLiveTVClock as specified, what happens to live TV from an analog tuner that encodes audio as MPEG, silent or choppy? (I have no analog channels here.)
As I said, if you force the live tv clock to AC3, it will fix the problem for channels with AC3 audio but then MPEG channels will have the same problem. I found nothing that would solve this issue for both types of channels at the same time, so as I had far fewer analog channels I simply didn't watch analog channels live.

Reddwarf Wrote:I don't have analog channels but I have a bunch of channels with MPEG stereo audio, and I haven't had any snc issues since I started using AC3Filter for mpeg audio as well.
I had AC3Filter for both MPEG and AC3, it didn't help. This problem doesn't seem to happen in all scenarios, we never figured out why.
server: NextPVR 5.0.7/Win10 2004/64-bit/AMD A6-7400k/hvr-2250 & hvr-1250/Winegard Flatwave antenna/Schedules Direct
main client: NextPVR 5.0.7 Desktop Client; LG 50UH5500 WebOS 3.0 TV
jamhandman
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#12
2014-12-03, 06:27 PM
I didn't expect to see this much activity for this thread. I made the change to my setup lastnight, but wasn't able to actually watch TV. I did a quick test for a few minutes and it appeared to be working, but will test more tonight. Should I also modify my Config.xml as described in the older post? Thanks.
Zeb
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#13
2014-12-04, 12:01 AM
jamhandman Wrote:Should I also modify my Config.xml as described in the older post?

The advantage of the Config.xml setting is that you could keep MPEG1 enabled without suffering the issue with 2-channel AC3 streams when watching live TV. If you have a need for MPEG1, e.g. you want to play recordings made with an analog tuner in NextPVR (it would be very surprising if you have a QAM channel with MPEG1 audio), then you can edit Config.xml with Notepad. Just be careful to save as .xml rather than defaulting to .txt.
Zeb
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#14
2014-12-04, 12:20 AM
Reddwarf Wrote:I have a bunch of channels with MPEG stereo audio, and I haven't had any snc issues since I started using AC3Filter for mpeg audio as well.

Then you don't have any audio stream with 2-channel AC3, probably all 6-channel. You would only get the issue with MPEG1 if you changed Config.xml to benefit AC3.
Reddwarf
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#15
2014-12-04, 01:41 AM
Zeb Wrote:Then you don't have any audio stream with 2-channel AC3, probably all 6-channel. You would only get the issue with MPEG1 if you changed Config.xml to benefit AC3.
I do have 2-channel AC3 audio too on some channels, but I haven't modified config.xml. It's a long time since I'v had the sync issue, but I'm pretty sure it disappared when I discovered that AC3Filter could be used for mpeg audio too. I remember having to set it manually in config.xml before Sub implemented the ability to choose AC3Filter for mpeg audio.

"I'd rather have a bottle in front of me than a frontal lobotomy"
Zeb
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#16
2014-12-04, 03:00 AM
No, the issue we are discussing occurs even if AC3Filter is selected for both MPEG1 and AC3 and has nothing whatsoever to do with choice of decoders.
jamhandman
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#17
2014-12-04, 02:16 PM
This fix appears to have worked for me. I was watching "Wayne's World 2" last night and didn't appear to have any issues. Thanks everyone for the help and information.
drmargarit
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#18
2014-12-04, 08:00 PM
All of my recordings are compressed into mp4 overnight but the audio is just copied (ffmpeg -acodec copy). I have audio dropout problems as well. Would disabling mpeg1 help my problem and where exactly is the setting to disable it?

Jim Margarit
johnsonx42
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#19
2014-12-04, 09:31 PM
drmargarit Wrote:All of my recordings are compressed into mp4 overnight but the audio is just copied (ffmpeg -acodec copy). I have audio dropout problems as well. Would disabling mpeg1 help my problem and where exactly is the setting to disable it?

Jim Margarit
Completely unrelated. No settings in NPVR that I can think of would affect this.
server: NextPVR 5.0.7/Win10 2004/64-bit/AMD A6-7400k/hvr-2250 & hvr-1250/Winegard Flatwave antenna/Schedules Direct
main client: NextPVR 5.0.7 Desktop Client; LG 50UH5500 WebOS 3.0 TV
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