Colors - Revision history

Pinterf: /* color_yuv */ Add 2 new filters using color_yuv

2019-12-06T12:21:11Z

‎color_yuv: Add 2 new filters using color_yuv

Raffriff42: color_yuv

2016-01-09T07:01:15Z

color_yuv

Reel.Deal: category

2014-08-23T22:35:57Z

Raffriff42: Color_presets

2014-08-12T06:16:20Z

Color_presets

Admin at 10:05, 10 May 2013

2013-05-10T10:05:55Z

Admin: 1 revision

2013-05-10T10:05:34Z

1 revision

188.192.236.38 at 22:28, 21 January 2010

2010-01-21T22:28:01Z

New page

In some filters ([[BlankClip]], [[Letterbox]], [[AddBorders]] and [[Fade|FadeXXX]]) a color argument can be specified. In all cases the color should be specified in [[RGB]] format even if the colorformat of the input clip is [[YUV]]. This can be done in hexadecimal or decimal notation.

In '''hexadecimal notation''' the number is composed as follows: the first two digits denote the red channel, the next two the green channel and the last two the blue channel. The hexadecimal number must be preceded with a $.

In '''decimal notation''' the number is as follows: the red channel value is multiplied by 65536, the green channel value is multiplied by 256 and the two resulting products are both added to the blue channel value.

Let's consider an example. Brown is given by R=$A5 (165), G=$2A (42), B=$2A (42). Thus
BlankClip(color=$A52A2A)
gives a brown frame. Converting each channel to decimal (remember that A=10, B=11, C=12, D=14, E=14, F=15) gives

R = $A5 = 10*16^1 + 5*16^0 = 165
G = $2A = 2*16^1 + 10*16^0 = 42
B = $2A = 2*16^1 + 10*16^0 = 42

165*65536 + 42*256 + 42 = 10824234

Thus creating a brown frame specifying the color in decimal notation gives
BlankClip(color=10824234)

Common color presets can be found in the file colors_rgb.avsi, which should be present in your plugin autoload folder (look into the file for list of presets). Thus BlankClip(color=color_brown) gives the same brown frames.

Note that black RGB=$000000 will be converted to Y=16, U=V=128 if the colorformat of the input clip is YUV, since the default color conversion RGB [0,255] –> YUV [16,235] is used.

@@ Line 24: / Line 24: @@
 ====color_yuv====
-* [[BlankClip]] allows specifying colors in YUV format. This is not very well documented ([[TODO]]), but if you know the YUV color you want, the math is similar to the above:
+* [[BlankClip]], [[AddBorders]] and [[LetterBox]] allows specifying colors in YUV format. This is not very well documented ([[TODO]]), but if you know the YUV color you want, the math is similar to the above:
   color_rgb = (r*65536) + (g*256) + b
   color_yuv = (y*65536) + (u*256) + v

@@ Line 1: / Line 1: @@
 [[Category:Advanced_topics]]
-In some filters ([[BlankClip]], [[Letterbox]], [[AddBorders]] and [[Fade|FadeXXX]]) a color argument can be specified. In all cases the color should be specified in [[RGB]] format even if the colorformat of the input clip is [[YUV]]. This can be done in hexadecimal or decimal notation.
+In some filters ([[BlankClip]], [[Letterbox]], [[AddBorders]] and [[Fade|FadeXXX]]) a color argument can be specified. In all cases (except [[#color_yuv|this one]]) the color should be specified in [[RGB]] format even if the color format of the input clip is [[YUV]]. This can be done in hexadecimal or decimal notation.
 In '''hexadecimal notation''' the number is composed as follows: the first two digits denote the red channel, the next two the green channel and the last two the blue channel. The hexadecimal number must be preceded with a $.
@@ Line 21: / Line 21: @@
 Common named colors can be found in the file '''colors_rgb.avsi''', which should be present in your plugin autoload folder. Thus BlankClip(color='''color_brown''') gives the same brown frames. See the page [[Color_presets |Color presets]] for a visual preview.
-Note that black RGB=$000000 will be converted to Y=16, U=V=128 if the colorformat of the input clip is YUV, since the default color conversion RGB [0,255] –> YUV [16,235] is used.
+Note that black RGB=$000000 will be converted to Y=16, U=V=128 if the color format of the input clip is YUV, since the default color conversion RGB [0,255] –> YUV [16,235] is used.
-todo: add category
+====color_yuv====

← Older revision		Revision as of 22:35, 23 August 2014
Line 1:		Line 1:
		+	[[Category:Advanced_topics]]
	In some filters ([[BlankClip]], [[Letterbox]], [[AddBorders]] and [[Fade\|FadeXXX]]) a color argument can be specified. In all cases the color should be specified in [[RGB]] format even if the colorformat of the input clip is [[YUV]]. This can be done in hexadecimal or decimal notation.		In some filters ([[BlankClip]], [[Letterbox]], [[AddBorders]] and [[Fade\|FadeXXX]]) a color argument can be specified. In all cases the color should be specified in [[RGB]] format even if the colorformat of the input clip is [[YUV]]. This can be done in hexadecimal or decimal notation.

← Older revision		Revision as of 10:05, 10 May 2013
Line 21:		Line 21:

	Note that black RGB=$000000 will be converted to Y=16, U=V=128 if the colorformat of the input clip is YUV, since the default color conversion RGB [0,255] –> YUV [16,235] is used.		Note that black RGB=$000000 will be converted to Y=16, U=V=128 if the colorformat of the input clip is YUV, since the default color conversion RGB [0,255] –> YUV [16,235] is used.
		+
		+	todo: add category