As mentioned, I'm just taking my first steps in to Analogue to DV Capture and Restoration. I started with an old VHS I had lying around that I could afford to break and I'm getting a glitch that I don't know how to describe or what causes it? Bad VCR, bad tape, bad capture?
Every few frames there's a knurling type pattern.
It's a mass produced tape from 1991, played on a Sony SLV-E700, in to a Hauppauge USB-Live2, being captured with WinTV (if any of that helps).
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Those are bad dot crawl artifacts. I suspect you see them mostly with high motion and only in colored areas. They are easy to filter out in static sequences.
Yes it appears more so on blocks of colour.
So unless I get a VCR with S-Video out, then it's an inevitable result?
Here's a 30 second sample of the raw footage. The screenshots above were after I'd cropped and encoded it, but presumably the raw video is of more use:
Now that I've seen it in a video file, it's not dot crawl. It's some kind of herringbone noise. I don't know what's causing it. Can you try a different VCR?
You also have a terrible time base problem which is causing the frame to wiggle left/right all the time. That may be the cause of the herringbone noise too.
And finally, the video has been through an NTSC to PAL conversion with field blending. This can be mostly repaired in AviSynth with SRestore.
Last edited by jagabo; 1st Jun 2013 at 12:36.
OPC (Optimum Picture Control) would it be best to turn this off?
AVT-8710 TBC, which will presumably help a little?