MaskTools2/mt makediff - Revision history

Reel.Deal: Undo revision 4863 by Reel.Deal (talk)

2014-10-27T12:03:54Z

Undo revision 4863 by Reel.Deal (talk)

Reel.Deal: test

2014-10-27T12:03:20Z

test

Reel.Deal: minor

2014-10-27T12:02:49Z

minor

Reel.Deal: mt_makediff

2014-10-27T12:02:25Z

mt_makediff

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{{FilterCat4|External_filters|Plugin_functions|Other_filters|Support_filters}}
'''Back to [[MaskTools2#Filters|MaskTools2]] ←'''
 
 
== Description ==
mt_makediff subtracts two clips; equivalent to mt_lutxy("x y - 128 +"), but faster.
 
 
== [[Script variables|Syntax and Parameters]] ==
:{{Template:FuncDef|mt_makediff (clip, clip, int "Y", int "U", int"V", string "chroma", int "offX", int "offY", int "w" int "h")}}
 
::{{Par2| |clip| }}
:::Input clip one.
 
::{{Par2| |clip| }}
:::Input clip two.
 
::{{Par2|Y|int|3}}
::{{Par2|U|int|1}}
::{{Par2|V|int|1}}
:::These three values describe the actual processing mode that is to be used on each plane / channel. Here is how the modes are coded :
::::*x = -255...0 : all the pixels of the plane will be set to -x.
::::*x = 1 : the plane will not be processed. That means the content of the plane after the filter is pure garbage.
::::*x = 2 : the plane of the first input clip will be copied.
::::*x = 3 : the plane will be processed with the processing the filter is designed to do.
::::*x = 4 : the plane of the second input clip will be copied.
 
::{{Par2|chroma|string|""}}
:::When defined, the value contained in this string will overwrite the {{Template:FuncDef3|U}} and {{Template:FuncDef3|V}} processing modes.
:::This is a nice addition proposed by mg262 that makes the filter more user friendly. Allowed values for chroma are:
::::*"process" : set u = v = 3.
::::*"copy" or "copy first" : set u = v = 2.
::::*"copy second" : set u = v = 4.
::::*"xxx", where xxx is a number : set u = v = -xxx.
 
::{{Par2|offX|int|0}}
::{{Par2|offY|int|0}}
:::{{Template:FuncDef3|offX}} and {{Template:FuncDef3|offY}} are the top left coordinates of the box where the actual processing shall occur. Everything outside that box will be garbage.
 
::{{Par2|w|int|-1}}
::{{Par2|h|int|-1}}
:::{{Template:FuncDef3|w}} and {{Template:FuncDef3|h}} are the width and height of the processed box. -1 means that the box extends to the lower right corner of the video. That also means that default settings are meant to process the whole picture.
 
== Examples ==
mt_makediff with default settings:
clip1 = original
clip2 = processed 
mt_makediff(clip1, clip2, Y=3, U=1, V=1, chroma="", w=-1, h=-1)
 
 
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'''Back to [[MaskTools2#Filters|MaskTools2]] ←'''
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 {{FilterCat4|External_filters|Plugin_functions|Other_filters|Support_filters}}
 mt_makediff subtracts two clips; equivalent to mt_lutxy("x y - 128 +"), but faster.
 <br>