I'm trying to salvage a video from 35 years ago, but it has some major tearing/flagging/whatever you want to call it at the top for the first few minutes before it mostly settles down into more of a minor strip along the top. I should mention this video is a dub, so that may be part of the issue right there; maybe even the WHOLE issue. I'm thinking this might be less a defect with the current tape than it is an accurate recording of what it was being fed decades ago, because the things recorded before and after it (regular broadcast recordings) aren't skewed at all.
I'm thinking there's no fixing it during capture. I've tried it in two regular vhs decks and two svhs decks, and this is about the best I could get. Adjusting the tracking had no effect, other than making everything worse. Playing with the JVC settings (calibration, stabilizer, etc) had no real effect.
I'm probably looking at something crazy like having to manually tweak individual still frames in Photoshop to truly fix it, which I don't care enough to do, but I thought I'd ask in case there was some (relatively) simple fix or filter or something!