I've been having this issue for a while now over multiple clean installs of increasingly newer versions of Ubuntu.

I have a Logitech 9000 Pro webcam. I'm trying to use it to record video. It does fine, but the audio goes out of sync after a while (I haven't figured out how long exactly, but it takes several minutes). I've been using guvcview.

Does anyone have any suggestions how I can diagnose why the audio is out of sync? Thanks for any help!