Reel.Deal: add documentation

2016-01-16T19:56:48Z

add documentation

Raffriff42: redirect for convenient searching ** TODO: 'blending' category?

2015-11-08T02:06:13Z

redirect for convenient searching ** TODO: 'blending' category?

New page

#REDIRECT [[External_filters#Averaging.2FLayering.2FMasking]]
{{FilterCat|External_filters|Adjustment_filters|TODO}}

← Older revision		Revision as of 19:56, 16 January 2016
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−	~~#REDIRECT~~ [[~~External_filters#Averaging~~.~~2FLayering~~.~~2FMasking~~]]	+	{{FilterCat4\|External_filters\|Plugins\|Adjustment_filters\|Masking}}
−	{{~~FilterCat~~\|~~External_filters~~\|~~Adjustment_filters~~\|~~TODO~~}}	+	{{Filter3
		+	\|1=[http://code.google.com/u/jsutinen@gmail.com/ jsutinen], IanB
		+	\|2=20121231
		+	\|3=[http://forum.doom9.org/attachment.php?attachmentid=13207&d=1356994426 Unpremultiply.zip]
		+	\|4=Masking
		+	\|5=[http://opensource.org/licenses/BSD-3-Clause BSD 3-Clause]
		+	\|6=[http://forum.doom9.org/showthread.php?t=166730 Doom9 Thread]}}
		+
		+	== Description ==
		+	AviSynth plugin to convert a premultipled RGB32 clip to straight matted alpha. AviSynth's [[Overlay]]() function requires straight matted input and will product artifacts if given a premultiplied clip. This plugin performs the appropriate conversion on the alpha channel to prevent this.
		+
		+	Eyeon Fusion is known to only produce premultiplied RGBA videos as well as improperly configured versions of Adobe After Effects. Other video compositing solutions may also suffer the same issue.
		+	<br>
		+	<br>
		+	== Requirements ==
		+	* AviSynth 2.5.8 or [http://sourceforge.net/projects/avisynth2/ greater]
		+	* Supported color formats: [[RGB32]]
		+	<br>
		+	== [[Script variables\|Syntax and Parameters]] ==
		+	:{{Template:FuncDef\|Unpremultiply (clip)}}
		+	<br>
		+	::{{Par2\| \|clip\| }}
		+	:::Input clip to be unpremultiplied. Input clip must be RGB32, also known as RGBA. All other input types should fail with an error message.
		+	<br>
		+
		+	== Examples ==
		+	[[AviSource]]("RGB32OverlayClip.avi")
		+	Unpremultiply()
		+	<br>
		+	== Changelog ==
		+	Version Date(D/M/Y) Changes<br>
		+	20121231 31/12/2012 - The bottom row and right column of the lookup table were not being initialised.<br>
		+	20121227 27/12/2012 - Fix a rookie mistake in not clamping the intermediate results between 0 and 255.
		+	- Also changed to uses a fast 65K lookup table instead of the slow in place idiv's.<br>
		+	20081229 29/12/2008 - Initial release.
		+	<br>
		+	== Archived Downloads ==
		+	{\| class="wikitable" border="1"; width="600px"
		+	\|-
		+	!!width="100px"\| Version
		+	!!width="150px"\| Download
		+	!!width="150px"\| Mirror
		+	\|-
		+	!20121231
		+	\|[http://forum.doom9.org/attachment.php?attachmentid=13207&d=1356994426 Unpremultiply.zip]
		+	\|N/A
		+	\|-
		+	!20081229
		+	\|[http://avisynth-unpremultiply.googlecode.com/files/Unpremultiply-20081229.zip Unpremultiply-20081229.zip]
		+	\|[http://web.archive.org/web/20160116193807/https://avisynth-unpremultiply.googlecode.com/files/Unpremultiply-20081229.zip Unpremultiply-20081229.zip]
		+	\|}
		+	<br>
		+	== External Links ==
		+	*[http://forum.doom9.org/showthread.php?t=168152 Doom9 Forum] - Layer and Overlay operation giving wrong results with RGBA image source
		+	<br>
		+	<br>
		+	-----------------------------------------------
		+	'''Back to [[External_filters#Averaging.2FLayering.2FMasking\|External Filters]] ←'''

Unpremultiply - Revision history

Reel.Deal: add documentation

Raffriff42: redirect for convenient searching ** TODO: 'blending' category?