Question / Help Mic Desyncing with Cam after 2 HOURS 55ish. VAC. Youtube?

dTox

Member
Hey guys. Wasn't sure why i was desyncing but after closer inspection i think i might know why. It would be great to hear some feedback so i can prevent this from happening in the future?

I'm running my USB Anua Mic through Adobe Audition, using Virtual Audio Cable set at 120ms Latency. My Mic Offset is set to -120 in OBS to match. I have a Logitech C920. Mic stamps on.

I did a 12 hour stream today. After watching some of it back to check if all was okay, i noticed it was out of sync.

At around 2HRS 58MINS, I ran a YouTube video in HD on stream. In the playback video on Twitch, it appears this was where it began to desync (http://www.twitch.tv/dtox_tv/v/35771970?t=02h58m33s).

If you watch the vod, you can see the YouTube video starts to cause stuttering - the video, webcam and mic starts to stutter slightly. Hereinafter my mic is out of sync until my OBS crashed at around 10 hours.

Does anyone know why this YouTube video caused a desync? What might be happening? CPU over usage? I have an i74790 @4.0GHZ and 16GB memory.

Appreciate the help guys, thanks!

P.S Would setting Mic/Aux boost to 2 but leaving Deskop a 1 be causing any of these issues? Just wondering since it's the only thing i changed in this stream compared to others. Still believe it has something to do with the YouTube video though. Thanks.
PPS. Also wanted to say how great this software is, and free, thank you for your continued hard work and support OBS team!
 
Last edited:

dTox

Member

Dammit. I forget every time!

Should be this one attached.

BTW, is there anything in here that would explain why my Donation alerts don't show up either? I can see some logs regarding 'CLR' browser in there.

Thanks for your time.
 

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  • 2016-01-16-1223-22.log
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Harold

Active Member
Virtual audio cable is falling behind on timestamps. You MIGHT be able to solve it by increasing the scene buffering time to 1000.

BTW, is there anything in here that would explain why my Donation alerts don't show up either? I can see some logs regarding 'CLR' browser in there.
Maybe it's too far down the source list, and maybe the site you're using is broken.
 

dTox

Member
Virtual audio cable is falling behind on timestamps. You MIGHT be able to solve it by increasing the scene buffering time to 1000.

Maybe it's too far down the source list, and maybe the site you're using is broken.

Interesting. Did you notice if VAC began falling behind after the point i mentioned in the video? Because I've done 4 hour streams before, with no desyncing, whereas my last broadcast desynced at around the 2 hour 58 mark, after showing the YouTube video where it began to stutter.

RE: Too far down the source list, do you mean in the Order of the Sources or Global Sources?

Thanks.
 

Harold

Active Member
Did you notice if VAC began falling behind after the point i mentioned in the video?
It's fairly early, but any falling behind is enough to desync.

RE: Too far down the source list, do you mean in the Order of the Sources or Global Sources?
order in the regular sources.
 
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