Yep. Especially a hacked VCR could be made to do this. If one taps the data from the spinning head directly, instead of relying on the VCR to process it into a

Yep. Especially a hacked VCR could be made to do this. If one taps the data from the spinning head directly, instead of relying on the VCR to process it into a proper composite signal, I'd say it's even realistic to do this. Just run the tape at half or a quarter of the speed. The spinning helical head should still produce data. Then it's a matter of assembling it in software.