ShowAlpha
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| − | {{Template: | + | {{Template:FuncDef |
| + | |ShowAlpha(clip ''clip'' [, string ''pixel_type'' ] ) | ||
| + | }} | ||
| − | + | Returns the alpha channel of an [[RGB32]] clip as greyscale. | |
| − | + | :{{Par2|pixel_type|string|"RGB32"}} | |
| + | ::Sets the color format of the output. | ||
| + | ::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 (0-255), and so can be used as the ''mask'' argument to [[Overlay]]. | ||
| − | |||
| − | ''' | + | {{Template:Func3Def |
| + | |ShowRed(clip ''clip'' [, string ''pixel_type'' ] ) | ||
| + | |ShowGreen(clip ''clip'' [, string ''pixel_type'' ] ) | ||
| + | |ShowBlue(clip ''clip'' [, string ''pixel_type'' ] ) | ||
| + | }} | ||
| − | + | Returns the selected channel of an [[RGB32]] or [[RGB24]] clip as greyscale. | |
| + | |||
| + | :{{Par2|pixel_type|string|"RGB32"}} | ||
| + | ::Sets the color format of the output. | ||
| + | ::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. | ||
| + | ::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 (0-255), and so can be used as the ''mask'' argument to [[Overlay]]. | ||
| + | |||
| + | |||
| + | ==== See Also ==== | ||
| + | *Show [[YUV]] channels with [[ConvertToY8]] / [[UToY]] / [[VToY]]. | ||
| + | *{{AvsPluscon}} [[Extract]] for {{Deep_color}} support. | ||
| + | |||
| + | |||
| + | ==== Examples ==== | ||
| + | * Shows alpha channel of clip | ||
| + | <div {{BoxWidthIndent|36|1}} > | ||
[[AviSource]]("clip.avi") | [[AviSource]]("clip.avi") | ||
| − | ShowAlpha | + | ShowAlpha |
| + | </div> | ||
| − | + | * Swaps red and blue channels | |
| + | <div {{BoxWidthIndent|36|1}} > | ||
AviSource("clip.avi") | AviSource("clip.avi") | ||
| − | [[MergeRGB]](ShowBlue("YV12"), Last, ShowRed("YV12")) | + | [[MergeRGB]]( ShowBlue("YV12"), Last, ShowRed("YV12") ) |
| + | </div> | ||
| − | + | ||
| + | ==== Changelog ==== | ||
{| border="1" | {| border="1" | ||
| + | |- | ||
| + | | v2.60 | ||
| + | | Added pixel_type "Y8" | ||
|- | |- | ||
| v2.56 | | v2.56 | ||
| Added ShowBlue, ShowGreen and ShowRed. | | Added ShowBlue, ShowGreen and ShowRed. | ||
|} | |} | ||
| − | |||
[[Category:Internal filters]] | [[Category:Internal filters]] | ||
| + | [[Category:Levels_and_Chroma_filters]] | ||
Latest revision as of 03:44, 28 April 2017
ShowAlpha(clip clip [, string pixel_type ] )
Returns the alpha channel of an RGB32 clip as greyscale.
- string pixel_type = "RGB32"
ShowRed(clip clip [, string pixel_type ] )
ShowGreen(clip clip [, string pixel_type ] )
ShowBlue(clip clip [, string pixel_type ] )
Returns the selected channel of an RGB32 or RGB24 clip as greyscale.
- string pixel_type = "RGB32"
- Sets the color format of the output.
- Allowed pixel_types are RGB, RGB32, RGB24, YUY2, YV12 and (in v2.60) Y8.
- Default is "RGB"; note "RGB" and "RGB32" are equivalent arguments here.
- 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 (0-255), and so can be used as the mask argument to Overlay.
[edit] See Also
- Show YUV channels with ConvertToY8 / UToY / VToY.
- AVS+ Extract for Deep Color support.
[edit] Examples
- Shows alpha channel of clip
AviSource("clip.avi") ShowAlpha
- Swaps red and blue channels
AviSource("clip.avi")
MergeRGB( ShowBlue("YV12"), Last, ShowRed("YV12") )
[edit] Changelog
| v2.60 | Added pixel_type "Y8" |
| v2.56 | Added ShowBlue, ShowGreen and ShowRed. |
