Horizontal chroma noise?
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Hi, I'm doing some testing with various workflows.
This video is acquired starting from a commercial vhs, a documentary. Losslessy Huffyuv avi. Panasonic NV-FS200 -> PC with Ati AIW 9000 Connecting via Y/C S-Video cable I see these intermittent horizontal pink lines even before capture. If I connect in composite they are not seen ... The cables and connectors are clean and tight. It doesn't look like a bad cable. I also tried to change the video source, connecting a digital terrestrial decoder on the fly (which does not come out natively in S-video), obviously I see the video in black and white but always with those intermittent lines. Same thing, with the composite no lines.. Have you had any cases similar to this? thanks |
It's most likely a faulty VCR. I've seen this artifact on camcorders and the caps are the culprit.
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I would exclude it because in composite it doesn't, and for safety I also changed source, with a DVB-T it does the same thing.
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I quite don't understand your problem, samples from different sources may give us an idea, I know for a fact that analog video is interlaced, so the appearance of alternating lines is normal.
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It's not interlacing, I mean the pink lines that appear intermittent on the video. I noticed that they are visible on 2 consecutive frames, alternating with 2 clean frames
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Might be a YUY2 vs Yv12 mismatch. You have captured the video as YUY2 huffyuv yet it seems to be YV12 because when i convert it with avisynth the bars disapears
There is something else strange (perhaps related) the colors (on the water for example) seem to vary from frame to frame last edit: I found the trick, spotlessUV (the new version from Stainless) Quote:
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I investigate in this sense, however to clarify as soon as I am in capture mode in virtualdub I already see the intermittent colored lines. If I connect in composite they are not there. I took another test. I added a panasonic ES15 in the middle (connected all in Y/C) and it manages to remove them.
With this avisynth function can I remove it? Is there a default function or should it be added? Thanks for now |
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