Is there a Virtualdub deinterlacer that doesn't leave residual artifacts?

[brassplyer]

I've been trying various Virtualdub deinterlace filters but find that with all of them, residual artifacts get left behind. I try a difference deinterlacer or setting and one part of the video looks better but it introduces issues in another part. Lines/jaggies around eyes, mouths, backs of jackets, shiny metallic surfaces etc. I can't seem to find a deinterlacer/setting that eliminates all issues.

Is there such a thing as a deinterlace filter that makes the video look like it was shot progressively?

What I'm focusing on at the moment is VHS transf'd via firewire and converted to HuffYuv.

[jagabo]

No, there are no great deinterlacers for VirtualDub. About the best you're going to find is Yadif. But it doesn't come close to QTGMC() in AviSynth. Even at its preset="ultra fast" settings QTGMC is better than anything in VirtualDub.

[brassplyer]

No, there are no great deinterlacers for VirtualDub. About the best you're going to find is Yadif. But it doesn't come close to QTGMC() in AviSynth. Even at its preset="ultra fast" settings QTGMC is better than anything in VirtualDub.

The mediafire links to this on avisynth.org

http://avisynth.org/mediawiki/QTGMC#Links:

get warnings from McAfee siteadvisor. Any suggestions?

[jagabo]

I don't know why McAfee doesn't like it...

[brassplyer]

What version of avisynth does this require? I have 2.5.8 currently.

[deadrats]

No, there are no great deinterlacers for VirtualDub. About the best you're going to find is Yadif. But it doesn't come close to QTGMC() in AviSynth. Even at its preset="ultra fast" settings QTGMC is better than anything in VirtualDub.

isn't that a bit of a dubious statement? from what i have read qtgmc with the "ultrafast" preset uses yadif for deinterlacing, so if you can use yadif with v-dub then there's no advantage in switching to qtgmc with the ultrafast preset.

also, from what i can see from poking around the qtgmc script all it really amounts to is using someone else's deinterlacer + sharpening and a few other tweaks, couldn't one just chain a bunch of similar filters and settings in v-dub or similar editing program and get the same results.

i guess basically what i'm asking isn't qtgmc a tad overrated?

[jagabo]

2.5.8 should be fine. I recommend you get the "plugin package with all requirements" if you don't have a lot of AviSynth filters already.

[brassplyer]

2.5.8 should be fine. I recommend you get the "plugin package with all requirements" if you don't have a lot of AviSynth filters already.

I'm pretty much an Avisynth noob. I've fooled with it before but am being reminded of why I found it to be a pain to use.

[sanlyn]

i guess basically what i'm asking isn't qtgmc a tad overrated?

No.

[sanlyn]

The mediafire links to this on avisynth.org

http://avisynth.org/mediawiki/QTGMC#Links:

get warnings from McAfee siteadvisor. Any suggestions?

Many advanced users suggest that McAfee itself is as bad as a virus. You mean you don't recall a short time back when their "free" scanner thought Google's home page was a Trojan?

[budwzr]

And isn't the CEO wanted for murder?

[Hoser Rob]

Yes, and I think he may have been caught. Not 100% on that though. Bizarre story.

Actually many antivirus programs give you a lot of false positives. One of the tech support people at the local university, where all students have to own a laptop and they are very integrated, told me that mse is the only one that's never screwed up on the network.

[jagabo]

Is there a Virtualdub deinterlacer that doesn't leave residual artifacts?

And just to be clear: there are absolutely no deinterlacers that deliver artifact free results. And there never will be. You can't create a full picture from half a picture without "guessing" what is missing.

[poisondeathray]

And isn't the CEO wanted for murder?

OT: Is he still the CEO? I thought he sold the company years ago and basically retired on some island ?

[budwzr]

And isn't the CEO wanted for murder?

OT: Is he still the CEO? I thought he sold the company years ago and basically retired on some island ?

OK, then "founder".

[brassplyer]

i guess basically what i'm asking isn't qtgmc a tad overrated?

Having finally gotten it up and running and seeing the results, it doesn't seem overrated to me. As previously advertised, much better results than anything I've managed to get out of Vdub deinterlace filters.

[sanlyn]

QTGMC usually works well at its default "presets", but there must be 50 parameters you can play with -- when you need it. Note that most of the secret magic words are in the .avsi script; if you double-click it and try to open it as text, it looks like a binary file. Just open it in Windows Wordpad and save an extra copy as *.txt.

The designer states that originally QTGMC was just for deinterlacing and repair of badly deinterlaced video, but somehow a lot of excellent denoising was required in the process. So QTGMC is also a pretty good denoiser in some respects (although according to the script you can preserve the noise, if you wish!). I use it to repair really bad VHS interlacing and other problems. Or to deinterlace for running AVisynth plugins that work progressive-only, but I reinterlace afterwards. If my original source is interlaced, I archive it that way: once you deinterlace the source and discard the interlaced original, you're limited to progressive-only encoded formats forever.

Get inside the actual script as a .txt file and you'll see that it's more than just a pretty face. The HTML help that comes with it only scratches the surface.

BTW, most VirtualDub filters don't care about interlace. Those that do will have a check box to indicate interlaced video in their setup dialogs. But they don't deintetlace; internally they likely just use the equivalent of:

SeparateFields()
[ do some processing ]
Weave()

The above method is usually used in Avisynth to use progressive-only plugins without deinterlacing.

[brassplyer]

Doing further experimenting, I continue to be impressed. Just the basic clarity of the resulting image is so much better than what I was getting before, I find I don't even need some of the Vdub filters I was using previously to tweak the deinterlaced image - seems they were just compensating for some of the shortcomings of the other deinterlacers.