Why resize to 720p? What resolution are you recording to anyways? You should just leave it in SD IMO.
9 times out of 10 I would agree with you. If somebody was just tossing a tape into a DVD/VCR combo and pushing “record” to output to DVD there wouldn’t be much to work with. Those recordings are generally awful and full of macroblocking and usually plain shit.
To start with I’ll be using a VCR off of this list. Then I’ll be doing a YUV 4:2:2 AVI capture saved to huffyuv or lagarith. Trying to get as close to a lossless VHS capture as possible even though it is technically impossible, but you get my drift.
When I capture a single 1.5 hour VHS tape of 4 episodes it is around 40-50gb per tape. That is a lot of color/chroma/luma information for avisynth and virtualdub to chew on to come up with the best possible image before converting to x264/x265 or mpeg2.
Not to mention the reality is avisynth scripts are a waaaaaaay better scaler than a dvd player or a tv. For all the same reasons 2006 GOUT upscale scripts are a thing. A lot of the popular scripts floating around out there will actually resize a smaller image to a larger resolution, do their work, and then resize back down to give the line enhancers/smoothers/darkeners more to work with on a larger canvas.
So I’ll give it a whirl. If the results are worth it I’ll move forward with it. If it is a waste of time I’ll move on from it.