Klaus1, thank you.
This post in Amazon concerned me. I am especially concerned because audio syncing is the problem I'm having, and I'm wondering if it's because of the signal being sent from my camcorder.
Here's the post: I found the Canopus ADVC110 to be unusable on older (c. 10 years) Hi8 tapes. Symptomatically, there would be times where the frames would jump around, or black out entirely for parts of a second in the ADVC110 digital output stream. What seems to be happening is that the sync signal on the edge of older Hi8 tapes may be degraded, and the codec of the ADVC110 is not robust against such degradation; it loses sync on the frame, or gives up entirely and blacks out the output. Changing the fixed sync dip switch on the ADVC110 did not help it. (The same problem also occurred digitizing an old VHS tape). I put the same Hi8 tapes through the pass-through digitizer on a Sony DCR-HC32, and it had no problems whatsoever. The ADVC110 codec also produces more contrasty images than the Sony DCR-HC32; details in shadow are lost; frames are grainier; noise in the tape signals are amplified into subtle rainbow waves on the ADVC110, not so noticeable on the Sony, which seems to have a more linear codec. So, for a little more money you can buy a camcorder with more robust A to D conversion and better image than the ADVC110.