GreyScale - Revision history

Reel.Deal at 04:31, 18 September 2022

2022-09-18T04:31:32Z

2022-09-16T18:19:14Z

add link to avs+ documentation

2017-04-28T20:27:42Z

2017-04-24T21:12:23Z

note AVS+ differences

2016-02-17T09:35:21Z

note alternate spelling of filter name

2016-01-17T22:04:44Z

2016-01-17T21:59:35Z

2016-01-17T21:50:55Z

2016-01-17T21:47:49Z

2016-01-17T16:10:27Z

Rec601 vs PC.601

@@ Line 3: / Line 3: @@
 Up-to-date documentation: [https://avisynthplus.readthedocs.io/en/latest/avisynthdoc/corefilters/greyscale.html https://avisynthplus.readthedocs.io]
 </div>
 Converts the input clip to greyscale (no color), without changing the [[Convert|color format]].

← Older revision		Revision as of 18:19, 16 September 2022
Line 1:		Line 1:
		+	<div {{BlueBox2\|40\|0\|3px solid purple}} >
		+	{{AvsPlusFullname}}<br>
		+	Up-to-date documentation: [https://avisynthplus.readthedocs.io/en/latest/avisynthdoc/corefilters/greyscale.html https://avisynthplus.readthedocs.io]
		+	</div>
		+
	Converts the input clip to greyscale (no color), without changing the [[Convert\|color format]].		Converts the input clip to greyscale (no color), without changing the [[Convert\|color format]].

@@ Line 17: / Line 17: @@
-If {{FuncArg|clip}} is [[YUV]], the chroma channels are simply set to grey (128<sub>8</sub>) – {{FuncArg|matrix}} is not used '''and must not''' be specified otherwise an error will be thrown.
+If {{FuncArg|clip}} is [[YUV]], the chroma channels are simply set to grey (128{{D}}) – {{FuncArg|matrix}} is not used '''and must not''' be specified otherwise an error will be thrown.
 See [[Color conversions]] for an explanation of the coefficients. Broadly speaking though,
@@ Line 23: / Line 23: @@
 :*using ''Average'', '''blue''' contributes more.
-In all cases, Luma range is not changed (0-255<sub>8</sub> in &rarr; 0-255<sub>8</sub> out; 16-235<sub>8</sub> in &rarr; 16-235<sub>8</sub> out)
+In all cases, Luma range is not changed (0{{D}}-255{{D}} in &rarr; 0{{D}}-255{{D}} out; 16{{D}}-235{{D}} in &rarr; 16{{D}}-235{{D}} out)
 [[Category:Internal filters]]
 [[Category:Levels_and_Chroma_filters]]

@@ Line 12: / Line 12: @@
 ::In RGB based formats, the conversion produces the luma using the coefficients given in the matrix parameter.
 ::*"Rec601" : Use Rec.601 coefficients (and keeping luma range unchanged)
-::*"Rec709" : Use Rec.709 coefficients (and keeping luma range unchanged)
+::*"Rec709" : Use Rec.709 (HD) coefficients (and keeping luma range unchanged)
 ::*"AVERAGE" : Use averaged coefficients (''Y'' = (R + G + B) / 3)
-If {{FuncArg|clip}} is [[YUV]], the chroma channels are simply set to grey (128) – {{FuncArg|matrix}} is not used '''and must not''' be specified otherwise an error will be thrown.
+If {{FuncArg|clip}} is [[YUV]], the chroma channels are simply set to grey (128<sub>8</sub>) – {{FuncArg|matrix}} is not used '''and must not''' be specified otherwise an error will be thrown.
 See [[Color conversions]] for an explanation of the coefficients. Broadly speaking though,
@@ Line 22: / Line 23: @@
 :*using ''Average'', '''blue''' contributes more.
-In all cases, Luma range is not changed (0-255 in &rarr; 0-255 out; 16-235 in &rarr; 16-235 out)
+In all cases, Luma range is not changed (0-255<sub>8</sub> in &rarr; 0-255<sub>8</sub> out; 16-235<sub>8</sub> in &rarr; 16-235<sub>8</sub> out)
 [[Category:Internal filters]]
 [[Category:Levels_and_Chroma_filters]]

@@ Line 1: / Line 1: @@
 Converts the input clip to greyscale (no color), without changing the [[Convert|color format]].
-{{Template:FuncDef|Greyscale(clip ''clip'' [, string ''matrix''])}}
 :{{Par2|matrix|string|"Rec601"}}

← Older revision		Revision as of 22:04, 17 January 2016
Line 11:		Line 11:


−	If {{FuncArg\|clip}} is [[YUV]], the chroma channels are simply set to grey (128) – {{FuncArg\|matrix}} is not used '''and must ~~be empty~~'''.	+	If {{FuncArg\|clip}} is [[YUV]], the chroma channels are simply set to grey (128) – {{FuncArg\|matrix}} is not used '''and must not''' be specified otherwise an error will be thrown.

	See [[Color conversions]] for an explanation of the coefficients. Broadly speaking though,		See [[Color conversions]] for an explanation of the coefficients. Broadly speaking though,

← Older revision		Revision as of 21:59, 17 January 2016
Line 1:		Line 1:
−	Converts the input clip to greyscale (no color), without changing the ~~color~~ [[Convert\|format]].	+	Converts the input clip to greyscale (no color), without changing the [[Convert\|color format]].

@@ Line 6: / Line 6: @@
 :{{Par2|matrix|string|"Rec601"}}
 ::Controls the colour coefficients used in RGB&rarr;greyscale conversion.
-::*"Rec601" : Use Rec.601 coefficients.
+::*"Rec601" : Use Rec.601 coefficients (actually [[Convert#Syntax_and_Parameters|"PC.601"]] since luma does not change)
-::*"Rec709" : Use Rec.709 coefficients.
+::*"Rec709" : Use Rec.709 coefficients (actually [[Convert#Syntax_and_Parameters|"PC.709"]] since luma does not change)
-::*"AVERAGE" : Use averaged coefficients (''Y'' = (R + G + B) / 3).
+::*"AVERAGE" : Use averaged coefficients (''Y'' = (R + G + B) / 3)