Audio and video gradually lose sync over time during VHS capture

dvd3000

New Member
Hi everyone. I'm trying to use OBS to capture some VHS tapes to digital with an old BT878 tuner card through a v4l2 stream.

Everything else is working perfectly, I can get a full 640x480 59.94 FPS deinterlaced video from my camcorder. But the problem is, over time, very slowly, the audio and video become out of sync, and can get up to 1 second out of sync after an hour of recording. If I close and reopen OBS, the cycle repeats.

I'm using OBS 28.1.2 on Ubuntu 20.04. I was told to attach a log file so here it is: https://obsproject.com/logs/U-Pz0R-_BfIomDw_

Thanks for any help.
 
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