A while ago I had captured some long segments of a DVD in order to chop some smaller loops out of it. I was using my Sony TRV-720 Digital8 camera with my DVD player plugged into its analog S-Video input. My first attempt was to record directly to Digital8 tape, but not surprising, the camera had a copy inhibit circuit that detected the Macrovision in the analog video signal, and would not allow me to record. I looped through the camera to my computer via Firewire and was able to capture to DV-AVI's using SFvidcap. From there I was able to chop it up and export to various other codecs just fine.

My problem now is, the long segments are needlessly taking space on my hard drive.. And I wanted to back them up by printing them in sequence to a Digital8 tape. Surprisingly despite my ability to capture them in the first place, my camera somehow still realizes what their source was and is refusing to record.

I am wondering what about the DV-AVI files lets the camera know not to record. Especially since the initial transfer was analog, I would think Macrovision would be gone, because in my understanding it lives within the sync signal of an analog video signal. In my understanding of things, digital video files don't have any 'sync' per se; the D/A converter involved generates new sync when outputting back to analog.

Anyone have any suggestions for getting these files archived onto D8 tape in a way that will preserve the scene detection?