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Strange artifacts appear post-IVTC (single scene)

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Look at the people in the center. They're taking about 1 or 2 steps every second, so there's not rapid movement. Also, this scene for some reason makes the tritical IVTC filters REALLY slow down. Infact, this scene looks good if you leave it interlaced since there are no interlacing artifacts. I just want to learn what this is and why it's happening, since in the future I might encounter something that I won't be able to solve by just not IVTCing it. The script I used is this: Code:

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RogRacer

money-user




Statistics:
Messages: 89
Registration: 02.18.2002
10.06.22 - 07:39:58
Message # 1
RE: Strange artifacts appear post-IVTC (single scene)

That scene is setting off tfm's combed frame detection. If you use tfm(display=true,pp=1) you can see that it is being set off by the upper story window of the leftmost house (the block tfm draws is hard to see since it is behind the text). Possible solutions are to increase cthresh or increase MI so that the combed frame detection isn't triggered. Another option is to use a script that wont artifact as much on false positives, such as: mpeg2source("dvd.d2v") interp = nnedi(field=-2) deint = tdeint(mode=2,edeint=interp) tfm(d2v="dvd.d2v",clip2=deint,slow=2) tdecimate(mode=1,denoise=true) The downside is that in the case of true interlaced frames mode 2 of tdeint will output a blended frame (since no two frames in the bobbed stream will match), but personally I'd rather live with that.

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billycorgan

money-user




Statistics:
Messages: 85
Registration: 01.05.2003
10.06.22 - 07:47:42
Message # 2
RE: Strange artifacts appear post-IVTC (single scene)

instead of tdeint as your deint try this: Code:

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Jonathan 90 M3

money-user




Statistics:
Messages: 24
Registration: 02.21.2003
10.06.22 - 07:52:53
Message # 3
RE: Strange artifacts appear post-IVTC (single scene)

Thanks tritical, I'll try playing with it. I'll probably go with the first option since I can afford looking for scenes like this and using different settings just for them. And wizboy, I'll give yadifmod a shot. Thanks!

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"I'd probably take the E30 M3 in this case just because I love that little car, and how tanky that inline 6 is." - thecj

reelizmpro

money-user




Statistics:
Messages: 100
Registration: 11.11.2002
10.06.22 - 07:57:32
Message # 4
RE: Strange artifacts appear post-IVTC (single scene)
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