DeBlock

Abstract
Author	Manao,Fizick, tp7, MysteryX, 299792458m
Version	@9802e03 (2020/08/30)
Download	Deblock_299792458m_noAVX2req.7z
Category	Deblocker
License	GPLv2
Discussion	Doom9 Thread (original v1.2) Doom9 Thread (update v1.3

Description

It performs deblocking on the picture, using the deblocking filter of H264. It's useful to deblock the result of MVCompensate of MVTools plugin, etc.

Requirements

• [x86]: AviSynth+ or AviSynth 2.6
• [x64]: AviSynth+
• Supported color formats: Y8, YV12, YV16, YV24, YV411
  • AviSynth+: all planar Y and YUV formats (8/10/12/14/16bit and float) are supported.

Syntax and Parameters

Deblock (clip, int "quant", int "aOffset", int "bOffset")

clip   =

Input clip, width and height must be mod 8.

int  quant = 25

The higher the quant, the stronger the deblocking. Range is from 0 to 60.

int  aOffset = 0

Quant modifier to the blocking detector threshold. Setting it higher means than more edges will deblocked.

int  bOffset = 0

Another quant modifier, for block detecting and for deblocking's strength. There again, the higher, the stronger.

string  planes = "yuv"

Specifies which planes to process between y, u and v.

int  opt = 0

Sets which cpu optimizations to use.

• 0 : Auto-detect.
• 1 : Use C++ code.
• 2 : Use SSE4.2 code.
• 3 : Use AVX2 code.

Only 8-16bit is optimized, not float.

• If quant + aOffset is less than 16, the filter does nothing at all. The same goes for quant + bOffset.

Examples

Deblock with default settings:

MPEG2Source("Blocky.dv2")
Deblock(quant=25, aOffset=0, bOffset=0, planes="yuv")

To deblock the motion compensation (MVTools plugin):

vectors = source.MVAnalyse(isb = false, lambda = 1000)
compensation = source.MVCompensate(vectors, mode = 0)
compensation.Deblock()

Changelog

Version      Date            Developer       Changes

@9802e03     2020/08/30      299792458m      - Added SIMD optimization for 8-16bit
                                             - Added "opt" parameter
v1.3         2018/05/29      MysteryX        - Back-ported code from VapourSynth
                                             - Added high-bit-depth support
                                             - Added Planes parameter to specify which planes to process
                                             - AviSynth+: self-registers as a MT_NICE_FILTER
v0.9         2013/12/03      tp7             - Faster and supports all planar colorspaces
                                             - Compiled with Microsoft Visual Studio C++ 2012.
v1.2         2006/04/23      Fizick          - Moved code into separate project
v1.1         2006/01/09      Manao/Fizick    - Present in old MvTools (up to v1.1)

Archived Downloads

Version	Download	Mirror
@9802e03	Avisynth-Deblock_299792458m_noAVX2req.7z *	Avisynth-Deblock_299792458m_noAVX2req.7z *
v0.0.9	GitHub
v0.1.2	deblock12.zip	deblock12.zip

• *299792458m: performance optimized version; builds compiled with Intel C++ 19.2 without AVX2 requirement.

External Links

• GitHub Source code repository (latest version, v1.3 with SIMD optimizations)
• GitHub Source code repository (older version, v1.3, 2018)
• GitHub Source code repository (older version, v0.9, 2013)

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