VMAF

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{{Filter3
 
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| 1={{Author/Asd-g}}
 
| 1={{Author/Asd-g}}
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| 2=v2.1.1
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| 2=v2.1.2
 
| 3=[https://github.com/Asd-g/AviSynth-VMAF/releases/ VMAF]
 
| 3=[https://github.com/Asd-g/AviSynth-VMAF/releases/ VMAF]
 
| 4=Debug filter
 
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== Description ==
 
== Description ==
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[[VMAF]] is a perceptual video quality assessment algorithm developed by Netflix. Refer to the [https://github.com/Netflix/vmaf/blob/master/FAQ.md FAQ] page for frequently asked questions of VMAF.
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[[VMAF]] is a perceptual video quality assessment algorithm developed by Netflix. Refer to the [https://github.com/Netflix/vmaf/blob/master/resource/doc/faq.md FAQ] page for frequently asked questions of VMAF.
  
 
This is [https://github.com/HomeOfVapourSynthEvolution/VapourSynth-VMAF a port of the VapourSynth plugin VMAF.]
 
This is [https://github.com/HomeOfVapourSynthEvolution/VapourSynth-VMAF a port of the VapourSynth plugin VMAF.]
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<br>
 
<br>
 
<br>
 
<br>
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== Requirements ==
 
== Requirements ==
 
* [x86] [[AviSynth+]] or [https://sourceforge.net/projects/avisynth2/ AviSynth 2.6]
 
* [x86] [[AviSynth+]] or [https://sourceforge.net/projects/avisynth2/ AviSynth 2.6]
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== Changelog ==
 
== Changelog ==
 
  Version      Date            Changes<br>
 
  Version      Date            Changes<br>
 +
v2.1.2      2022/10/06      - Fixed undefined behavior when upstream throw runtime error.<br>
 
  v2.1.1      2022/04/18      - Added `cambi_opt` options - `max_log_contrast`, `enc_bitdepth`, `eotf`
 
  v2.1.1      2022/04/18      - Added `cambi_opt` options - `max_log_contrast`, `enc_bitdepth`, `eotf`
 
                               - Added function `VMAF2`
 
                               - Added function `VMAF2`

Latest revision as of 08:35, 18 May 2023

Abstract
Author Asd-g
Version v2.1.2
Download VMAF
Category Debug filter
License MIT
Discussion

Contents

[edit] Description

VMAF is a perceptual video quality assessment algorithm developed by Netflix. Refer to the FAQ page for frequently asked questions of VMAF.

This is a port of the VapourSynth plugin VMAF.

vmaf is used.

[edit] Requirements



[edit] Syntax and Parameters

VMAF (clip reference, clip distorted, string log_path, int "log_format", int[] "model", int[] "feature", string "cambi_opt")
VMAF2 (clip reference, clip "distorted", int[] "feature", string "cambi_opt")


reference   =
distorted   =
Clips to calculate VMAF score. Must be in YUV 8..16-bit planar format.
distorted must be specified when feature != 5. (VMAF2 only)
Must be in YUV 8/10-bit planar format with minimum three planes.


string  log_path =
Sets the path of the log file.
This parameter is for VMAF() only.


int  log_format = 0
Sets the format of the log file.
  • 0 : xml.
  • 1 : json.
  • 2 : csv.
This parameter is for VMAF() only.


int[]  model =
Sets which model to use. Refer to this, this and this page for more details.
  • 0 : vmaf_v0.6.1
  • 1 : vmaf_v0.6.1neg (NEG mode)
  • 2 : vmaf_b_v0.6.3 (Confidence Interval)
  • 3 : vmaf_4k_v0.6.1
This parameter is for VMAF() only.


int[]  feature =
  • 0 : PSNR
  • 1 : PSNR-HVS
  • 2 : SSIM
  • 3 : MS-SSIM
  • 4 : CIEDE2000
  • 5 : CAMBI


string  cambi_opt =
  • enc_width, enc_height
Encoding/processing resolution to compute the banding score, useful in cases where scaling was applied to the input prior to the computation of metrics.
enc_width must be between 320 and 7680.
enc_height must be between 200 and 4320.
Default: Same as input image.
  • window_size
Window size to compute CAMBI.
Must be between 15 and 127.
Default: 63 (corresponds to ~1 degree at 4K resolution and 1.5H).
  • topk
Ratio of pixels for the spatial pooling computation.
Must be between 0.0001 and 1.0.
Default: 0.6.
  • tvi_threshold
Visibilty threshold for luminance ΔL < tvi_threshold*L_mean for BT.1886.
Must be between 0.0001 and 1.0.
Default: 0.019.
Format: option_name=value.
If more than one option is specified, the options must be separated by space.
Usage example: cambi_opt="windows_size=120 enc_width=1280 enc_height=720".


VMAF2() exports frame property with the name of the used feature.


[edit] Examples

Comparing a high quality clip vs an encoded clip: 

VMAF(HQ_original, HQ_encoded, model=0)


Comparing a high quality clip vs an encoded clip with MS-SSIM metrics only: 

VMAF(HQ_original, HQ_encoded, feature=3)


Frame property cambi is set: 

VMAF2(clip, feature=5)


[edit] Changelog 

Version      Date            Changes

v2.1.2       2022/10/06      - Fixed undefined behavior when upstream throw runtime error.

v2.1.1       2022/04/18      - Added `cambi_opt` options - `max_log_contrast`, `enc_bitdepth`, `eotf`
                             - Added function `VMAF2`
                             - Clips must have either 8-bit or 10-bit bit depth

v2.1.0       2021/11/14      - Added parameter cambi_opt
                             - Removed model default value

v2.0.2       2021/10/20      - Fixed feature parameter
                             - Updated vmaf lib to 2.3.0
                             - Added feature CAMBI

v2.0.1       2021/10/02      - Fixed crashing when unsupported color formats are used
                             - Updated libvmaf to 2.2.1

v2.0.0       2021/07/10      - Updated to libvmaf 2.x

v1.0.0       2020/11/14      - Initial release
                             - AviSynth+: self-registers as MT_SERIALIZED


[edit] External Links

  • GitHub - Source code repository.



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