I am completely new to this and have followed this blog to get started: https://macilatthefront.blogspot.com/2021/01/deinterlacing-with-avisynth-and-qtgmc.html
The source video is a VHS of a cousin's birthday shot by a professional vendor, that I had captured via my VCR to PC set-up using OBS (if this is ultimately the issue, I can use whatever the recommended capturing software is)
This video however becomes "wavy" (or what I think is called combing) when there is motion after running QTGMC script - reference images in this link: https://imgur.com/a/0e0RjhV
The top image is the interlaced original and the bottom image is the wavy QTGMC output
Below is my current script:
SetFilterMTMode ("QTGMC", 2)
FFMPEGSource2("First Birthday 98.mp4", atrack=1)
I have tried AssumeTFF() as well as commenting out the resize/sharpening function but I still get the wavy output
Is there anything I can modify, or should I use an alternate deinterlacer
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OBS is NOT suggested capture software. What capture device do you have ? Better to use virtualdub and capture lossless lagarith or huffyuv. Even the software that would come with the device would give better results that OBS and NEVER capture as mp4 - there are already combing artifacts in your original.
Those artifacts are from being vertically resized before deinterlacing.