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Clean up darker horizontal lines from VHS

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Hello everybody,

I'm trying to restore capture from an old VHS tapes. I already done some steps and experiments with various AviSynth and VirtualDub filters in order to restore picture. Basically I have an idea how to process the whole thing with the major exception of those darker horizontal lines: :cool:

Attachment 21806

I'm newcomer to AviSynth scripts and will appreciate every help. What is done on the video so far is capture to YUV2 in Lagarith codec and QTMC deinterlacing. The goal is to make DVD and x264 video later. My wish is to use as less damaging tehnique as possible. I dont't like to use heavy manual intervention, but time for processing is not critical.

I have played with Smart Skating Rink, Camcorder color denoise, Color Mill filters on VirtualDubto to achive better results, but those are not applied on samples. If we can come to entire AviSynth chain, it is even better.
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