Which algorithm are you using for Smart Deinterlace?

musicvid

Member
I ran some quantitative tests a few years ago on a half-dozen software deinterlace / decomb solutions, and now its time to do it again.
Various programs are now using hardware assist, AI, and hybrid solutions. VRD Smart Deinterlace keeps catching my attention as one of the visually better ones, at least at source resolution. Are you using a commercial or open source solution? Mind sharing which one?
 

Dan203

Senior Developer
Staff member
IIRC it's something custom we bought from a freelance developer like 15 years ago.
 

Danr

Administrator
Staff member
We use Decomb licensed from Donald Graft with some internal speed improvements. I started looking at YADIF, but it didn't work well for I-frame seeking. It would probably be OK to use in the output stage.
 

hydra3333

Member
Nice. DG produces good gear.
IIRC ? he also has an nvidia gpu accelerated yadif for avisynth, and related deinterlacers, which are perhaps unusable in your context being nvidia/avisynth centric.
 

Danr

Administrator
Staff member
I already spoke with him about those and we could only use them if we modified our environment to be avisynth centric. That's not something we are currently considering.
 

musicvid

Member
I think it was 2001 or so when I started using Donald's filters in VDub. He introduced me to Bob, who introduced me to ...nvm.
 
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musicvid

Member
Here are some preliminary comparisons; all are pretty good in light of oldschool blend and interpolate.
1. VRD Smart Deinterlace
VrdSmart.jpg
2. Handbrake Decomb
HBDecomb.jpg
3. EEDI2
EEDI2.jpg
4. Vegas Smart Adaptive (paid solution)
VegasSmart.jpg
 

Danr

Administrator
Staff member
Thanks for posting these shots. They all look pretty similar to me.
 

Danr

Administrator
Staff member
I just got a new lens put into one of my eyes and am seeing more clearly than I have in years :) The thing to look for with the deinterlacer is does it preserve the detail in low movement scenes for example the logo in the lower right corner and does it get rid of the combing effect by bluring fast moving scenes.
 

jmc

Well-known member
Thanks for posting these shots. They all look pretty similar to me.
Sorry if this is too old...(don't remember ever seeing this)

I'm lens replaced, 4k_28 inch monitor, viewed at 18 inches from my nose and for me
the first 3 images seem to be the norm that I deal with...all the same.

But the last one, the "paid for" version is just WOW!
That would clean up my interlaced mpgs so much! (the edges of things)

It's the strings that are improved wonderfully!

I would definitely pay more money to get that option! (guessing that it is an AI thing)

Thanks,
jmc
 
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musicvid

Member
The AI Deinterlacer you like is now a standard feature of Vegas Pro 19. I have no connection other than as an owner.
 

jmc

Well-known member
Finally found a price for just VPro19...300 to $400 OUCH!
Glad it exists. Going to be a fair while before it works it's way down to VRD.

I've got TMPGEnc VMW7 and VRD I really don't want a third video program to deal with.
I would buy it if it was an addon for VRD. (The AI Deinterlace segment)

As to deinterlacing...
(TMPGEnc) I've cleaned up the jaggies in one frame to find jaggies in another frame and have to
change the deinterlace setting to clean that frame...so choices of where you want the jaggies.
Don't understand what is going on there. It is not common thank goodness!

Heh, per frame deinterlace settings would be a nightmare. :)

Thanks,
jmc
 
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jaydear

Member
Might be worth giving Topaz Video Enhance AI a try. It's cheaper than Vegas 19 Pro if all you're after is clean deinterlacing. It also offers some other useful functions and you can try before buying (it just watermarks the output). It is very slow on HD or higher resolution video, but the results are silky smooth and it has some other tricks as well.
 

jmc

Well-known member
Might be worth giving Topaz Video Enhance AI a try. It's cheaper than Vegas 19 Pro if all you're after is clean deinterlacing. It also offers some other useful functions and you can try before buying (it just watermarks the output). It is very slow on HD or higher resolution video, but the results are silky smooth and it has some other tricks as well.
I'll look into "Topaz" and see how it goes.

Thanks,
jmc
 
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