ShowAlpha - Revision history

Raffriff42: Use Template:Deep_color

2017-04-28T02:44:18Z

2017-04-23T12:29:22Z

tweak appearance

2017-04-23T12:25:06Z

note AVS+ differences

2016-01-27T12:40:11Z

one more touch-up

2016-01-27T05:38:40Z

‎See Also: YUV equivalent

2016-01-27T05:29:02Z

formatting, links, phrasing

2015-11-08T14:45:56Z

added category

2014-08-13T17:54:34Z

2014-08-05T18:20:24Z

2013-05-09T15:02:23Z

1 revision

@@ Line 31: / Line 31: @@
 ==== See Also ====
 *Show [[YUV]] channels with [[ConvertToY8]] / [[UToY]] / [[VToY]].
-*{{AvsPluscon}} [[Extract]] for high bit depth support.
+*{{AvsPluscon}} [[Extract]] for {{Deep_color}} support.

@@ Line 27: / Line 27: @@
 ::For [[YUV]] output the selected channel is copied to the ''Y'' (luma) channel, and the ''U'' and ''V'' (chroma) channels are set to grey (128).
 ::[[YUV]] clips are full range (0-255), and so can be used as the ''mask'' argument to [[Overlay]].
 ==== See Also ====
@@ Line 33: / Line 34: @@
-== Examples ==
+==== Examples ====
 * Shows alpha channel of clip
 <div {{BoxWidthIndent|36|1}} >
@@ Line 47: / Line 48: @@
-== Changelog ==
+==== Changelog ====
 {| border="1"
 |-

← Older revision		Revision as of 12:25, 23 April 2017
Line 30:		Line 30:
	==== See Also ====		==== See Also ====
	*Show [[YUV]] channels with [[ConvertToY8]] / [[UToY]] / [[VToY]].		*Show [[YUV]] channels with [[ConvertToY8]] / [[UToY]] / [[VToY]].
		+	*{{AvsPluscon}} [[Extract]] for high bit depth support.

@@ Line 9: / Line 9: @@
 ::Allowed {{FuncArg|pixel_types}} are [[RGB]], [[RGB32]], [[RGB24]], [[YUY2]], [[YV12]] and (in v2.60) [[Y8]].
 ::Default is "RGB"; note "RGB" and "RGB32" are equivalent arguments here.
-::[[YUV]] clips are full range (0&mdash;255), and so can be used as the ''mask'' argument to [[Overlay]].
+::[[YUV]] clips are full range (0-255), and so can be used as the ''mask'' argument to [[Overlay]].
@@ Line 26: / Line 26: @@
 ::For RGB32 output the selected channel is copied to all three color channels, but not to the Alpha channel, which is left untouched.
 ::For [[YUV]] output the selected channel is copied to the ''Y'' (luma) channel, and the ''U'' and ''V'' (chroma) channels are set to grey (128).
-::[[YUV]] clips are full range (0&mdash;255), and so can be used as the ''mask'' argument to [[Overlay]].
+::[[YUV]] clips are full range (0-255), and so can be used as the ''mask'' argument to [[Overlay]].
 ==== See Also ====

@@ Line 26: / Line 26: @@
 ::For RGB32 output the selected channel is copied to all three color channels, but not to the Alpha channel, which is left untouched.
 ::For [[YUV]] output the selected channel is copied to the ''Y'' (luma) channel, and the ''U'' and ''V'' (chroma) channels are set to grey (128).
 ::[[YUV]] clips are full range (0&mdash;255), and so can be used as the ''mask'' argument to [[Overlay]].

@@ Line 1: / Line 1: @@
-{{Template:Func4Def|ShowAlpha(clip ''clip'', string ''pixel_type'')|ShowBlue(clip ''clip'', string ''pixel_type'')|ShowGreen(clip ''clip'', string ''pixel_type'')|ShowRed(clip ''clip'', string ''pixel_type'')}}
+{{Template:FuncDef
-ShowAlpha shows the alpha channel of a RGB32 clip, available in v2.53. ShowBlue/ShowGreen/ShowRed shows the selected channel of a RGB clip, available in v2.56.
+Returns the alpha channel of an [[RGB32]] clip as greyscale.
-In v2.54 ShowAlpha now returns RGB, YUY2, or YV12 via the pixel_type argument. The latter two can be used to layer an RGB clip with alpha transparency data onto a YUV clip using the 3-argument form of Overlay, because when setting pixel_type to YUY2 or YV12 the luma range is [0,255].
+:{{Par2|pixel_type|string|"RGB32"}}
-'''Examples:'''
+{{Template:Func3Def
-  # shows alpha channel of clip
+Returns the selected channel of an [[RGB32]] or [[RGB24]] clip as greyscale.
   [[AviSource]]("clip.avi")
-  ShowAlpha()
+  ShowAlpha
- # swaps red and blue channels:
+* Swaps red and blue channels
   AviSource("clip.avi")
-  [[MergeRGB]](ShowBlue("YV12"), Last, ShowRed("YV12"))
+  [[MergeRGB]]( ShowBlue("YV12"), Last, ShowRed("YV12") )
-'''Changelog:'''
+== Changelog ==
 {| border="1"
 |-

← Older revision		Revision as of 14:45, 8 November 2015
Line 28:		Line 28:

	[[Category:Internal filters]]		[[Category:Internal filters]]
		+	[[Category:Levels_and_Chroma_filters]]

@@ Line 5: / Line 5: @@
 In v2.54 ShowAlpha now returns RGB, YUY2, or YV12 via the pixel_type argument. The latter two can be used to layer an RGB clip with alpha transparency data onto a YUV clip using the 3-argument form of Overlay, because when setting pixel_type to YUY2 or YV12 the luma range is [0,255].
-In v2.56 ShowAlpha/Red/Green/Blue now returns RGB24, RGB32, YUY2, or YV12 via the pixel_type argument. For RGB32 output the selected channel is copied to all R, G and B channels, but not the Alpha channel which is left untouched. For YUV output the selected channel is copied to the Luma channel, the chroma channels are set to grey (0x80).
+In v2.56 ShowAlpha/Red/Green/Blue now returns RGB24, RGB32, YUY2, or YV12 (and in v2.60 also Y8) via the pixel_type argument. For RGB32 output the selected channel is copied to all R, G and B channels, but not the Alpha channel which is left untouched. For YUV output the selected channel is copied to the Luma channel, the chroma channels are set to grey (0x80).
 '''Examples:'''
@@ Line 19: / Line 19: @@
 '''Changelog:'''
 {| border="1"
 |-
 | v2.56
 | Added ShowBlue, ShowGreen and ShowRed.
 |}
 [[Category:Internal filters]]