Sample youtube: https://www.youtube.com/watch?v=THu7kwJXyGc
(As lossy as youtube is, the error is significant enough that it's still plainly visible. If anyone reeally wants lossless or uncompressed I can provide that too)
This error is only visible on a relatively small portion of the tape (~20 minutes out of 2.5 hours), and it is visible on both VCRs I have access to (while the rest of the tape plays normally) in both VCRs, a sony SLV-N55 and a JVC SVHS S4600U. This capture is through an AVT-8710 "green" TBC but the error is visible without it as well. I have tried adjusting tracking manually but the image quality only worsens.
Any suggestions would be greatly appreciated!