AddGrainC

Abstract
Author	Tom Barry Foxyshadis LaTo cretindesalpes
Version	1.7.1
Download	AddGrainC-1.7.1.7z
Category	Effects
License	GPLv2
Discussion	Doom9 Thread

Description

Generate film-like grain or other effects (like rain) by adding random noise to a video clip. This noise may optionally be horizontally or vertically correlated to cause streaking.

AddGrain and AddGrainC are aliases for one another; there is no difference in functionality, only in syntax.

Requirements

• AviSynth 2.5.8 or 2.6.0 or greater
• Progressive input only
• Supported color formats: RGB24, RGB32, YUY2, YV12, *YV16, *YV24, *YV411, *Y8

* These additional planar colorspaces are not available in AviSynth 2.5.8.

• MMX or SSE2 capable CPU
• Microsoft Visual C++ 2012 Redistributable Package (x86 / x64)

Syntax and Parameters

AddGrain (clip, float "var", float "hcorr", float "vcorr", float "uvar", int "seed", bool "constant", bool "sse2")

AddGrainC (clip, float "var", float "uvar", float "hcorr", float "vcorr", int "seed", bool "constant", bool "sse2")

clip   =

Input clip.

float  var = 1.0

The standard deviation (strength) of the luma noise, 0.0 is disabled.

float  uvar = 0.0

The standard deviation (strength) of the chroma noise, 0.0 is disabled.

uvar does nothing in RGB mode.

float  hcorr = 0.0

float  vcorr = 0.0

Horizontal and vertical correlation, which causes a nifty streaking effect.

Range: 0.0 - 1.0

int  seed = -1

Specifies a repeatable grain sequence. Set to at least 0 to use.

bool  constant = false

Specifies a constant grain pattern on every frame.

bool  sse2 = true

Enable SSE2 optimization if available. 1.5x faster than MMX.

Examples

AddGrainC with default values:

AviSource("Blah.avi")
AddGrainC(var=1.0, uvar=0.0, hcorr=0.0, vcorr=0.0, seed=-1, constant=false, sse2=true)

Changelog

Version      Date            Developer       Changes

1.7.1      2013/11/25      Firesledge       Added a 64-bit version. Compiled with MSVC 2012 (requires the 2012 runtime libraries) 
1.7.0      2012/08/16      Firesledge       Supports Y8, YV16, YV24 and YV411 colorspaces.
1.6.1      2011/10/29      LaTo INV.        Automatic switch to MMX if SSE2 is not supported by the CPU.
1.6.0      2011/10/28      LaTo INV.        Added SSE2 code (50% faster than MMX)
1.5.4      2011/10/27      Firesledge       Fixed bad pixels on the last line in YV12 mode when constant=true,
                                              fixed potential problems with frame width > 4096 pixels
                                              and fixed several other minor things.
1.5.3      2011/10/26      Firesledge       Fixed coloring and bluring in RGB24 mode.
1.5.2      2011/10/26      Firesledge       Removed the SSE2 requirement.
1.5.1      2010/05/13      Firesledge       The source code compiles on Visual C++ versions older than 2008.
1.5        2010/05/07      Foxyshadis       Limit the initial seed generation to fix memory issues.
1.4          2006/08/11      Foxyshadis      Constant replaces seed, seed repeatable.
1.3        2006/06/10      Foxyshadis       Crashfix, noisegen optimization.
1.2        2006/06/06      Foxyshadis       Supports YUY2, RGB. Fix cache mess.
1.1        2006/06/01      Foxyshadis       Chroma grain + constant seed.
1.0        2003/06/18      Tom Barry        Initial Release

External Links

• Doom9 Forum - AddGrainC discussion.

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