Reel.Deal: Amp (2014/12/20)

2020-11-08T14:57:42Z

Amp (2014/12/20)

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{{FilterCat4|External_filters|Plugins|Other_filters|Debugging/Diagnostic_filters}}
{{Filter3
|{{Author/David Horman}}
|2014-12-20
|3=[http://horman.net/avisynth/download/amp.zip amp.zip]
|4=Debug filter
|5=
|6=[https://forum.doom9.org/showthread.php?p=1703332#post1703332 Doom9 Thread]
}}
== Description ==
[[Amp]] performs temporal smoothing, then (optionally) enhances the difference between the windowed average and the current frame. It was inspired by [[RgbAmplifier]].

In theory, this should let you do things like make pulses visible in videos of human faces or wrists, but I suspect you need a very low noise video to pick that up.

 
== Requirements ==
* [x86]: [[AviSynth+]] or [https://sourceforge.net/projects/avisynth2/ AviSynth 2.6]
* Supported color formats: [[RGB24]], [[RGB32]], [[YUY2]], [[YV12]]
 

== [[Script variables|Syntax and Parameters]] ==
:{{Template:FuncDef|amp (clip, int "window", float "y", float "u", float "v", float "a")}}
 
::{{Par2| |clip| }}
:::Input clip.
 
::{{Par2|window|int|0}}
:::The number of frames either side of the current one used for the temporal smoothing, i.e. a value of 5 will smooth over 5*2+1=11 frames.
 
::{{Par2|y|float|-1.0}}
::{{Par2|u|float|}}
::{{Par2|v|float|}}
::{{Par2|a|float|}}
:::For YV12/YUY2 colour spaces, the parameters y u v specify the level of enhancement for each channel. a is ignored.
:::For RGB24/RGB32 colour spaces, the parameters y u v [a] specify the level of enhancement for the channels r g b [a].
:::A value of 0 performs no enhancement (returns the unaltered channel of the source frame).
:::If you only specify y, the same value will be used for the other channels.
:::By not specifying any of these four parameters (or giving them the value of -1) the filter acts purely as a temporal smoother.
 
== Examples ==
amp with default settings:
[[AviSource]]("Blah.avi")
amp()

 
== Changelog ==
Version Date Changes 
20141220 2014/12/20 - Initial release
 
== Archived Downloads ==
{| class="wikitable" border="1"; width="600px"
|-
!!width="100px"| Version
!!width="150px"| Download
!!width="150px"| Mirror
|-
!2014-12-20
|[http://horman.net/avisynth/download/amp.zip amp.zip]
|[https://web.archive.org/web/20201108144638if_/http://horman.net/avisynth/download/amp.zip amp.zip]
|}
 

==External Links ==
 
 
-----------------------------------------------
'''Back to [[External_filters#Levels_and_Chroma|External Filters]] ←'''

Amp - Revision history

Reel.Deal: Amp (2014/12/20)