Question / Help Mic and webcam drifting out of sync

[NotNow]

(SLOBS)

DSLR camera, Camlink 4k, dedicated aftermarket USB 3 card (motherboard ports don't seem to work with Camlink 4k), Audient usb audio interface, AKG xlr mic, z390 motherboard, i7 8700k CPU, RTX 2060 GPU, 16gb ddr4 RAM.

Phew.

Every time I start up my stream, the mic is out of sync with the webcam. Sometimes 250m/s delay works, sometimes 500m/s. There is no way to predict which will work.

Sometimes it works for the entire stream, sometimes it slowly drifts back out of sync.

Mic timestamps are disabled. Buffering on webcam enabled.

Thoughts?

 

[Jim Harrison]

While my equipment is quite different, I also suffer from drifting audio sync. My log shows the same traits as NotNow, i.e OBS adds 23 milliseconds of audio buffering periodically during a stream. The log has many entries saying. "adding 23 milliseconds of audio buffering, total audio buffering is now ...". Since my streams are three times the length of NotNow, the sync at the end of the stream is attrocious. Is there any way to prevent the additional buffering?