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  1. Member brassplyer's Avatar
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    I've never been completely happy with any deinterlace filter in Virtualdub - they always seem to leave "jaggy" artifacts behind.

    Elsewhere in here I saw a suggestion to try the Virtualdubmod internal deinterlace, that it's supposedly superior. Sure enough, it seems to produce a much better deinterlace.

    Is there any way to make Virtualdub do the same thing?

    The only thing about Vdubmod is it doesn't seem to have a setting to take advantage of multicore cpu's....?
    Last edited by brassplyer; 2nd Nov 2012 at 19:49.
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  2. Banned
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    Depends on what you mean by "superior". VirtualDubMod hasn't been updated in years, while the current VirtualDub has newer deinterlace functions and a greater variety of them. Many members here would say that Avisynth's QTGMC is superior to VirtualDub's.

    Why are you deinterlacing? Without a sample of the original/unprocessed video you're working with and some idea of what you intend for final use, no one here can offer more info.
    Last edited by sanlyn; 23rd Mar 2014 at 12:29.
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  3. Seems that ELA and Yadif are supported thus i see no sense to use VDubMod for deinterlacing - but if deinterlace quality is so important go for http://avisynth.org/mediawiki/QTGMC slow but one of the best deinterlacers available for free.
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  4. Member brassplyer's Avatar
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    Originally Posted by sanlyn View Post
    Depends on what you mean by "superior". VirtualDubMod hasn't been updated in years, while the current VirtualDub has newer deinterlace functions and a greater variety of them.
    An ideal deinterlace would leave behind no residual jaggies and have a minimal impact on the clarity of the image....and do my laundry.
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    Then you're not using the best deinterlacers for the job. Jaggies are due largely to aliasing, not to interlacing. Deinterlacers themselves don't fix jaggies or sawtooth edges. Perhaps you mean "combing" effects? Those could be caused by a number of things: interlacing, telecine, blend interlacing, etc. Specific filters are developed for specific problems.
    Last edited by sanlyn; 23rd Mar 2014 at 12:29.
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  6. Video Restorer lordsmurf's Avatar
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    Jaggies are the result of poor deinterlacers.
    It's not a combing effect.

    VirtualDubMod sucks and only uses inferior methods.
    VirtualDub is passable due to Yadif.
    Avisynth would be the better solutions, by use QTGMC.
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    LS, thanks for clarifying the jaggies. This leads me to consider: does the O.P. mean that jaggies are already there in the source? Or do the jaggies appear as a result of some deintelace/deblend operation? That point seemed unclear. I've seen horrible cases of sawtooth, but they already existed in improperly deinterlaced/reinterlaced or similar sources. The worst of these were still mighty jaggy after deinterlacing; it took a few iterations of anti-aliasing to clean it up. For lesser cases, yes, I find QTGMC is the champ in that respect.
    Last edited by sanlyn; 23rd Mar 2014 at 12:29.
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  8. Originally Posted by brassplyer View Post
    I've never been completely happy with any deinterlace filter in Virtualdub - they always seem to leave "jaggy" artifacts behind.
    With all the video work you do, why haven't you switched to using AviSynth yet? Then you could use QTGMC and your jaggie problem would vanish. Not to mention all the other benefits. But doing your laundry isn't one of them.
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  9. Originally Posted by brassplyer View Post
    I've never been completely happy with any deinterlace filter in Virtualdub... Elsewhere in here I saw a suggestion to try the Virtualdubmod internal deinterlace, that it's supposedly superior.
    That makes no sense. VirtualDub has the exact same built in deinterlacers as VirtualDubMod, plus some better ones. As noted by others, QTGMC() in AviSynth is currently the best.
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