Pre-Created AVS Scripts

Scintilla · Post by **Scintilla** » Wed Jul 06, 2005 11:37 pm

You might find it more useful to convert the RGB numbers to YUV(/Lab) numbers; then if you have to make something brighter or darker, or shift the chroma one way or the other, it should be more obvious.

trythil · Post by **trythil** » Thu Jul 07, 2005 3:43 am

Scintilla wrote:You might find it more useful to convert the RGB numbers to YUV(/Lab) numbers; then if you have to make something brighter or darker, or shift the chroma one way or the other, it should be more obvious.

Working in HSV (hue, saturation, value) space may also be more useful than RGB, especially since Tweak takes hue, saturation, and value (brightness) parameters.

Most image processing programs will let you view a color value in HSV and RGB. If yours doesn't, there's an applet for converting between color spaces at RIT.

What is range clamping (or - why should I 'not really worried about...")

8-bit RGB goes from (0, 0, 0) to (255, 255, 255). 8-bit Y'CbCr (also called YUV, even though it really isn't -- read this for why) is generally clamped to (16, 16, 16) to (235, 240, 240). (This is the CCIR 601 recommendation for standard-definition television; HDTV uses different scaling constants.)

So adjusting in RGB space will cause you to lose some fidelity. (It's not bad, but if you're really anal, you should know that.) You can adjust entirely in planar Y'CbCr space, but it's a bit more complicated.

Zero1 · Post by **Zero1** » Thu Jul 07, 2005 5:55 pm

Jesus christ, deen and mftoon in the same script.

Filtering isnt the be all and end all of your amv. An overfiltered video can look just as bad, if not worse than an unfiltered video.

mftoon alone is overkill in my opinion.

If you really insist on brute force cleaning, try edeen

If you are downsizing an image, bilinear is recommended, bicubic and lanczos are meant for upsizing. Don't expect people to come flocking to post their scripts, many regard them as secrets of the trade, and if I wanted to be really cynical I could imply you are just wanting these scripts for yourself, but I'll give you the benefit of the doubt lol.

Ah well, have fun

Scintilla · Post by **Scintilla** » Thu Jul 07, 2005 6:06 pm

Z3r01 wrote:If you really insist on brute force cleaning, try edeen

But be careful with the parameters -- if your script sends VirtualDub(/Mod) down without any warning or error message, it probably means you set the ratios too high.

(I myself didn't figure this out until recently.)

eadsja · Post by **eadsja** » Thu Jul 07, 2005 10:52 pm

I was under the notion that MFToon was a sharpener, not a smoother. So It only looks and effects edges, to counteract any bluring that may have occoured through my filtering.

Then what would you suggest I do with e-deen to get the line sharpening? And what is the difference between using e-deen and deen?

That, and you guys are completely loosing me with the color manipulations speak. My video remastering vocabulary isn't that sophisticated yet (i've got a working knowledge, but not a finess knowledge yet....)

And do I want to start playing with the color conversions before or after I execute the color conversions to RBG (or in other words I keep in mind the final potential output while I am doing the color shifts...

Ie

I keep in mind that I will do the color shift... Then convert to RBG Colorspace.

I've also got some questions about pre-and post processing (more theory,) But that deserves it's own thread....

Scintilla · Post by **Scintilla** » Thu Jul 07, 2005 11:16 pm

eadsja wrote:I was under the notion that MFToon was a sharpener, not a smoother. So It only looks and effects edges, to counteract any bluring that may have occoured through my filtering.

Yes, it's a sharpener that works on edges, but your smoothers (Deen and VagueDenoiser) shouldn't have blurred the edges...

eadsja wrote:Then what would you suggest I do with e-deen to get the line sharpening?

eDeen's a spatial smoother, not a sharpener. Zero was suggesting you use eDeen in place of Deen.

But if you find mfToon too slow, you might want to try FastLineDarken and/or LimitedSharpen instead(both included in the AMVapp).

Zero1 · Post by **Zero1** » Sat Jul 09, 2005 3:26 pm

Yeah, I suggested edeen instead of deen. It's basically a shite load more powerful than regular deen, but it kill details big time. Hell I wonder why I even reccomended it, you would have to have some uber shitty source to justify edeen IMO.

mftoon iirc does the 3 basic jobs, spatial smoothing, sharpening and line darkening. The reason I don't like it is because the overall effect is very brute force, I suppose you could tone it down, but I like the control I get with using deen, warpsharp and fast line darken independantly.

As regard as to mftoon "blurring the edges", I'll assume that you was using deen as well, and these two together remove far too much detail, which may look to you as blurring.

Just a guess though