Weird pink stuff

StainlessS · 29th July 2021, 02:27

What is this down to,

Code:

Avisource("SH_2_secs.avi.avi")
ConvertToYV24
#ConvertToRGB24
O=Last

G=GeneralConvolution(0, "
1 0 1
2 4 2
1 0 1
")

B=O.Blur(1.58,-1.0)           # H-BLUR, V-SHARP

AMP=TRUE
D1=ClipDelta(G,O,amp=AMP)
D2=ClipDelta(B,O,amp=AMP)
StackVertical(D1,D2)
Return last

# Return Clip Difference of input clips (amp==true = Amplified, show==true = show background)
Function ClipDelta(clip clip1,clip clip2,bool "amp",bool "show") {
    amp=Default(amp,false)
    show=Default(show,false)
    c2=clip1.levels(128-32,1.0,128+32,128-32,128+32).greyscale()
    c1=clip1.subtract(clip2)
    c1=(amp)?c1.levels(127,1.0,129,0,255):c1
    return (show)?c1.Merge(c2):c1
}

click Me

Something to do with MPEG-2 chroma placement, or sharpen bug, or other ???
EDIT: All diffs are amp'ed to max, but still it seems a bit weird.

EDIT:
Above

Code:

B=O.Blur(1.58,-1.0)           # H-BLUR, V-SHARP

below

Code:

B=O.Blur(1.58,-0.99)           # H-BLUR, V-SHARP

Looks like avs+ bug

EDIT: below is pink

Code:

B=O.Blur(1.58,-0.999)           # H-BLUR, V-SHARP

EDIT: Think its probably my fault. Also maybe should have switched off coring, investigating.

Code:

# Removing Show stuff
Function ClipDelta(clip clip1,clip clip2,bool "amp") {
    amp=Default(amp,false)
    # Y centered on TV levels mid point [Round(((16+235)/2.0)) = 126]
    c1=clip1.subtract(clip2)
    return (amp) ? c1.levels(125,1.0,127,0,255,coring=false) : c1
}

StainlessS · 29th July 2021, 06:07

This here pink stuff is defo a bit wrong.

Code:

Colorbars(Pixel_type="YV12")
convertBits(32)
return  ColorYUV(levels="TV->PC").ConvertToRGB32

EDIT: Added ConvertToRGB32 at end of script, still does it in both Vdub2 and Potplayer.

EDIT: Switched to PC->TV

Code:

Colorbars(Pixel_type="YV12")
convertBits(32)
GreyScale
ColorYUV(levels="PC->TV")
Return Last.ConvertToRGB32

Maybe old code where chroma gray was 0.5.

EDIT: as first one with Greyscale before ColoYUV

Code:

Colorbars(Pixel_type="YV12")
convertBits(32)
GreyScale
ColorYUV(levels="TV->PC")
#ColorYUV(levels="PC->TV")
Return Last.ConvertToRGB32

Reel.Deel · 29th July 2021, 07:59

Quote:

Originally Posted by StainlessS

This here pink stuff is defo a bit wrong.

Code:

Colorbars(Pixel_type="YV12")
convertBits(32)
return  ColorYUV(levels="TV->PC").ConvertToRGB32

The culprit is ColorYUV, the wiki kinda mentions it supports it but I'm not sure. If you remove ColorYUV(levels="TV->PC") then the output is correct. It's also correct if you change to convertBits(16).

Sharc · 29th July 2021, 09:59

Something similar as discussed here?
https://forum.doom9.org/showthread.p...29#post1947029

StainlessS · 29th July 2021, 16:23

Thanks guys, I shoulda pointed out that only affects 32 bit ColorYUV.

29th July 2021, 06:07	#2 \| Link
StainlessS HeartlessS Usurer Join Date: Dec 2009 Location: Over the rainbow Posts: 10,980	This here pink stuff is defo a bit wrong. Code: Colorbars(Pixel_type="YV12") convertBits(32) return ColorYUV(levels="TV->PC").ConvertToRGB32 EDIT: Added ConvertToRGB32 at end of script, still does it in both Vdub2 and Potplayer. EDIT: Switched to PC->TV Code: Colorbars(Pixel_type="YV12") convertBits(32) GreyScale ColorYUV(levels="PC->TV") Return Last.ConvertToRGB32 Maybe old code where chroma gray was 0.5. EDIT: as first one with Greyscale before ColoYUV Code: Colorbars(Pixel_type="YV12") convertBits(32) GreyScale ColorYUV(levels="TV->PC") #ColorYUV(levels="PC->TV") Return Last.ConvertToRGB32 __________________ I sometimes post sober. StainlessS@MediaFire ::: AND/OR ::: StainlessS@SendSpace "Some infinities are bigger than other infinities", but how many of them are infinitely bigger ??? Last edited by StainlessS; 29th July 2021 at 07:45.

29th July 2021, 16:23	#5 \| Link
StainlessS HeartlessS Usurer Join Date: Dec 2009 Location: Over the rainbow Posts: 10,980	Thanks guys, I shoulda pointed out that only affects 32 bit ColorYUV. __________________ I sometimes post sober. StainlessS@MediaFire ::: AND/OR ::: StainlessS@SendSpace "Some infinities are bigger than other infinities", but how many of them are infinitely bigger ???

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

29th July 2021, 09:59	#4 \| Link
Sharc Registered User Join Date: May 2006 Posts: 3,997	Something similar as discussed here? https://forum.doom9.org/showthread.p...29#post1947029