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Old 15th November 2011, 16:51   #1  |  Link
VideoFanatic
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Is it possible to Fix Bad Reception Artefacts with AviSynth??

I have a 720 x 480 interlaced video sample HERE (10MB in size)

There are wavey line artefacts caused by a bad TV reception. Is it possible to remove those artefacts with AviSynth? If so, could you please suggest a script. Thanks

Last edited by VideoFanatic; 15th November 2011 at 18:48.
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Old 15th November 2011, 18:46   #2  |  Link
Mounir
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a combo of fft3d + neat should help i believe

Good news is these interferences are on the Y component only (checked with neat's component viewer), bad news is there is a lot , in the Mid frequencies at that (6,9.6,9,1) for high,mid, low freqs respectively

Otherwise there is the multiple capture technique which "may" help
the script
# need to capture the video 2 or more times
vid1 = AVISource("C:\my1stcapture.avi", fourCC="HFYU", pixel_type="YUY2")("file1.ext")
vid2 = AVISource("C:\my2ndcapture.avi", fourCC="HFYU", pixel_type="YUY2")("file2.ext")
Merge (vid1, vid2)

Probably a combination of all these for perfect result will be best:
1st medium denoising each capture then merge them

Last edited by Mounir; 15th November 2011 at 19:01.
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Old 15th November 2011, 18:49   #3  |  Link
VideoFanatic
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Could you suggest a script for those please.
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Old 15th November 2011, 19:23   #4  |  Link
Reuf Toc
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You can try Defreq or FFTQuiver.
These plugin are made to remove interfering frequencies (the little waves). Sorry no script suggestion...
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Old 15th November 2011, 19:53   #5  |  Link
johnmeyer
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Defreq is the only plugin I know of that attempts to deal with the wavy lines. However, since the lines are coming and going in your clip, and their angle and spacing changes a lot, I doubt very much that you are going to be able to get much help even from that plugin because it assumes a constant angle and distance for the interference lines.
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