Filtering Help

[Scintilla]

Ok so I did something wrong... very wrong. I followed your directions Kariudo and somehow all the colors are in chaos.

http://img37.imageshack.us/img37/2826/blaugha.png

http://img35.imageshack.us/img35/6632/blaugh2.png

http://img5.imageshack.us/img5/5373/blaugh3.png

In fact, every script I open up even if there are no filters looks like that. How bizarre.

Did you add any new plugins to your plugins directory to get FLD to work, or did you just add the FLD script itself? If you added new plugins, then I'd suggest removing them one by one until you find the one that breaks the colors.
I know I've seen this kind of effect before, but I can't remember what caused it...

Oh, I was also wondering if I could edit with the raw script then edit the script later and have it update inside premiere. Like if after I finish my or what not then add the filters? My laptop is a slowbie and the filters put extra strain on it.

Yes. Just comment the filter lines out until you're ready for final export; I do this all the time myself. In fact, this is specifically suggested in the A/V tech guide.

[mirkosp]

Kariudo's script is wrong, here's the fixed fastlinedarkenmod script:

Code: Select all

#############################
# FastLineDarken 1.3 MT MOD #
#############################
#
# Written by Vectrangle, last update 12 Sept 04
#
#  * requires masktools 1.5.1 -- http://jourdan.madism.org/~manao/
#  * requires yv12 input
#
# Usage is FastLineDarken(strength, luma_cap, threshold, thinning),
#   named parameters are supported eg FastLineDarken(thinning=0)
# 
# Note that you must import this avs into your script using import("...\FastLineDarken.avs")
#
# Parameters are:
#  strength (integer)  - Line darkening amount, 0-256. Default 48. Represents the _maximum_ amount
#                        that the luma will be reduced by, weaker lines will be reduced by
#                        proportionately less.
#  luma_cap (integer)  - value from 0 (black) to 255 (white), used to stop the darkening
#                        determination from being 'blinded' by bright pixels, and to stop grey
#                        lines on white backgrounds being darkened. Any pixels brighter than
#                        luma_cap are treated as only being as bright as luma_cap. Lowering
#                        luma_cap tends to reduce line darkening. 255 disables capping. Default 191.
#  threshold (integer) - any pixels that were going to be darkened by an amount less than
#                        threshold will not be touched. setting this to 0 will disable it, setting
#                        it to 4 (default) is recommended, since often a lot of random pixels are
#                        marked for very slight darkening and a threshold of about 4 should fix
#                        them. Note if you set threshold too high, some lines will not be darkened
#  thinning (integer)  - optional line thinning amount, 0-256. Setting this to 0 will disable it,
#                        which is gives a _big_ speed increase. Note that thinning the lines will
#                        inherently darken the remaining pixels in each line a little. Default 24.
#
# Changelog:
#  1.3  - added ability to thin lines, now runs much slower unless thinning=0. Changed the defaults (again)
#  1.2  - huge speed increase using yv12lutxy =)
#       - weird darkening issues gone (they were caused by yv12layer)
#       - show option no longer available due to optimizations. Use subtract() instead
#  1.1  - added luma_cap option
#  1.0  - initial release
#


function FastLineDarkenMOD( clip c, int "strength", int "luma_cap", int "threshold", int "thinning") 
{
## parameters ##
str 	= string(default(strength, 48) /128.)
lum 	= string(default(luma_cap, 191))
thr 	= string(default(threshold, 4))
thinning = default(thinning,24)
thn 	= string(thinning /16.)

## filtering ##
exin	= c.mt_expand().mt_inpand()
diff 	= mt_lutxy(c,exin,yexpr="y "+lum+" < y "+lum+" ? x "+thr+" + > x y "+lum+" < y "+lum+" ? - 0 ? 127 +",uexpr="x",vexpr="x",u=2, v=2)
linemask= mt_lut(diff.mt_inpand(),"x 127 - "+thn+" * 255 +").mt_convolution("1 1 1","1 1 1",y=3,u=0,v=0)
thick 	= mt_lutxy(c, exin, yexpr="y "+lum+" < y "+lum+" ? x "+thr+" + > x y "+lum+" < y "+lum+" ? - 0 ? "+str+" * x +",uexpr="x",vexpr="x",u=2, v=2)
thin 	= mt_lutxy(c.mt_expand(U=2,V=2),diff,yexpr="x y 127 - "+str+" 1 + * +",u=2, v=2)

return (thinning == 0) ? thick : mt_merge(thin,thick,linemask,y=3,u=2,v=2)
}

As you can see, it missed the U=2,V=2 inside the mt_expand() which made it fail with the chroma. I think that calling it with thinning=0 would have worked fine, though, but if you wanted that slight thinning it comes with then yeah, updating to this one is the solution.

EDIT: Or actually, it seems that Kariudo's version is more recent... But I do remember that the lack of the U=2,V=2 gave chroma related bugs.Try to edited that into Kariudo's script, maybe. An alternative solution could also be calling it like so:

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mergeluma(fastlinedarkenMOD)

That way it won't mess with the chroma.