I recently came across a FB Reel post by the artist VJ Kuru who does a lot of live performance work processing with his custom Touch Designer networks. In this post he mentions that he was able to create a video glitch network with only 5 TD nodes. (Actually, if you exclude the required video input node and the optional Null output node, he got his glitch effect with only 3 TD nodes...)
I was intrigued and so decided I would try to figure this puzzle out -- his Reel showed only the most basic info, but I could see the set of nodes he used, as well as his manipulation of the NOISE TOP's amplitude parameter. So that was my starting point. And after several hours of messing around, I finally found some (rather extreme) settings that essentially duplicated his shifting wavy bands of raster & chroma distortion effect.
This got me playing around with simulating other sorts of analog tape-like distortions. Over the course of the afternoon, I added vertical roll distortion, tape dropout noise, and static like from dirty VCR playback heads (or a badly tuned TV set). Here is a snapshot of the TD network I ended up with (obviously much larger than a 5 node solution...):
Then I tried adding audio white noise sync'd to the visual white noise but I found it too annoying recurring at the frequency of the visual effect. So I dropped that one. But, I still have one other idea for audio distortion to add in -- a tape transport speed irregularity that affects the soundtrack (but not the image). I'll probably get back to this in the next few weeks. We'll see...
Meanwhile, I'm sharing some examples (below) of my current retro analog video processing network based upon found footage of the Golden Butoh (Daidogei) Dance Troupe from Japan:
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