Avisynth equivalent to dvfilm maker?

[DDogg]

Do we have a deinterlacing tool in the avisynth arsenal that does something similar as below?

http://www.dvfilm.com/maker/

Quote from the site:
Nearly all plug-in and built-in de-interlacers reduce vertical resolution by 50%. But DVFilm Maker works by analyzing motion in each frame, and only changing pixels in areas of the screen in which there is movement. This results in a much sharper image especially for scenes where the camera is still. Maker also detects horizontal lines and prevents aliasing, or "dot crawl". You will notice that the output video from DVFilm Maker is just as sharp and clear as your original footage, yet looks as if it were shot on film.

[trbarry]

From simple to better, deinterlacers sort of work as:

1) Bob type deinterlacers that attempt to extrapolate a frame from a single field, or

2) Motion adaptive deinterlacers that also attempt to use pixels from adjacent fields when they still, or

3) Motion compensating deinterlacers that also attempt to use pixels from adjacent fields even when they are slow moving.

It sounds like the dvfilm is of the 2nd type, like GreedyHMA. TomsMoComp is of the 3rd type, though only for very small motion. (motion speed of 1 or 2 pixels / field)

- Tom

[DDogg]

Tom, I was hoping you would reply.

Let me ask you or other specialists a follow up question. What setup would you try if you had to use avisynth to attemp to reproduce the effect mentioned in the quote above? DV always looks good but it always looks like DV. A lot of folks are trying to get DV to look a little more filmlike. It will never look like film, but the quest is always to make somebody hesitate for just a moment before they know for sure.

If you, DG, are others with knowledge would comment I would be in your debt.

DD

[trbarry]

Well, I think DG is on the way to India so he probably won't argue with me for the moment. ;)

But I am going to be politically incorrect and say I don't even like the film look.

But if you could drop the frame rate somehow to 24 fps and use SansGrip's noise making filter maybe you would come close.

I think there are also some hard to do gamma adjustments that can compensate for that sometimes bright garish look of outdoor video but I have no idea if it's possible starting with DV. And to be honest, I have never processed any DV.

- Tom

[Guest]

Tom, I would NEVER argue with you. Once bitten, twice shy, as they say. Isn't it? :)

For the film look you'll need 24 fps and a lot of "motion blur", coupled with soft, less saturated colors.

I'm with Tom, though, on the aesthetics.

Umm, genuine idlies and sambhar, not to mention the coconut chutney!!!

[trbarry]

Umm, genuine idlies and sambhar, not to mention the coconut chutney!!!

Grrrrrrrrr! (and I don't even know what those are)

I am in Michigan Winter. The theme is grey. :(

- Tom

edit: Just remembered, due to Donald's comments. Video tends to shoot at a small aperture and thus have too much depth of field so you can't focus the viewers attention as easily. I don't know if you can play with lenses and get around this to make it more film like, but it seems it might be possible.

[DDogg]

For the film look you'll need 24 fps and a lot of "motion blur", coupled with soft, less saturated colors.
You guys all know I am a trained monkey tool user short on theory :-)

24 fps - I guess Decomb with Decimate(cycle=5) gets me there or would you have a different suggestion specific to pure interlaced source?

lot of "motion blur" - Don't know how to get there.

less saturated colors - Yep, even monkeys can get that one.

Where does converting 60fps come into this? I see that mentioned a lot on some video sites.

Donald, I hope the trip will have a little play with the work. I would think India would be fascinating.

[DDogg]

Tom was good enough to share the following script with me for creating 60fps deinterlaced footage. Can somebody make a suggestion how to achieve the equivalent with Decomb? Between the two, it ought to give us DV'ers a good de-interlace option (needs decimate option). I want to post some of this stuff in NLE for tool users like myself and those not primarily interested in ripping or capture.

Note: Anybody with good scripts useful for DV sure could help out by posting them to NLE Here please (http://forum.doom9.org/showthread.php?s=&threadid=47669). It needs some activity, as now it is stone dead. Come on and help out, please!


# This script is only for BottomFirst material
LoadPlugin("TomsMoComp.dll")
avisource("Tape 1 - Clip 001.avi")
ConvertToYUY2
Bottom=AssumeFrameBased()
Top=Bottom.SeparateFields.Trim(1,0).weave
return Interleave(Bottom.TomsMoComp(0,5,1),Top.TomsMoComp(1,5,1))

[trbarry]

Well, film is only 24 frames / second anyway so I don't think something could be made more filmlike by increasing that. And Decomb can already reduce the frame rate to a smooth 24 if it started as film, or as an almost smooth 24 if it didn't.

And with interlaced material there is only one advantage to making 60 fps first if you eventually want 24 fps to emulate film, and it's not done much. But since there are really 60 fields in 60 fps and you can deinterlace that to 60 unique frames that means that if you eventually select only 24 of them the time error of each frame is only half as much as if you did it from 30 frames. That is, slightly less judder.

Though usually I guess I would still recommend coding most video sourced progressive material at 30 fps anyway since it will play smoother. But opinion is somewhat biased on my part though because on my HDTV caps at the resolutions I use I just flat out can't play Xvid clips at 60 progressive fps. For lower resolutions maybe people can. Dunno.

- Tom