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RUSSIAN

MSU Video Quality Measurement Tool

MSU Graphics & Media Lab (Video Group)

Projects, ideas: Dr. Dmitriy Vatolin
Implementation: Alexey Moskvin, Oleg Petrov

 

Brief Description

  • More than 50000 downloads.
  • More than 20 contributors
  • The largest quantity of objective metrics in single tool.
  • Simple and powerful tool for deep codecs & filters analysis.

Video quality is a characteristic of a video passed through a video transmission/processing system, a formal or informal measure of perceived video degradation (typically, compared to the original video). Video processing systems may introduce some amounts of distortion or artifacts in the video signal, so video quality evaluation is an important problem. MSU VQMT is a free program for video quality measurements. This application allows you to create objective comparison of video codecs and perform filters video analysis.

Version 1.52: Error in saving CSV file for comparative analysis fixed
Changelog >>



Supported video formats:

  1. *.AVI
  2. *.AVS
  3. *.YUV (scientific)
  4. *.BMP (RGB24)
  5. Via AviSynth: MOV, VOB, WMV, MP4, MPG etc
Supported metrics (and color spaces):
  1. PSNR (Y,U,V,L,R,G,B) - most popular
  2. Delta (Y,U,V,L, R,G,B)
  3. MSAD (Y,U,V,L,R,G,B)
  4. MSE (Y,U,V,L,R,G,B)
  5. SSIM (Y) - new
  6. VQM (Y) - new
  7. MSU Blurring (Y,U,V) - new
  8. MSU Blocking (Y,U,V) - new
Program allows to answer on questions:
  1. One codec has more blurring than another. On what frames? Average mark?
  2. One codec has more blocking than another. On what frames? Average mark?
  3. One codec has lower quality than another. On what frames? Average mark in PSNR, VQM, SSIM?

  4. Correspondent "bad frames" are saved automatically as BMP files.

 

Main Features

  1. Results are saved in *.CSV (can be opened everywhere)
  2. All metrics are visualized (very useful for codec and filter debugging)
  3. Main feature for codec lovers: comparative analysis (!!!) Now everybody in 5 minutes is able to demonstrate that one codec is better than another! It's easy:
    1. Set "comparative analysis" and select original, sequences compressed with codec A and codec B (recommended more than 10000 frames).
    2. Select metric (recommended Y-PSNR).
    3. Select "Save bad frames" pairs of frames with maximum difference in values of the metric (A>B) will be detected and saved.
    4. Press "Process", find output frames and select best pairs.
    5. Upload frames to your favorite forum.
    6. Done!
    If you want to prove, that codec B is better than A just swap compressed files in metric form fields. :) Codec and filter developers can use this feature for tuning (fast codec/filter update testing).
  4. Plug-ins interface allows to add your own metrics to our tool.

 

Comparison with freeware analogs

MSU VQMT

Video Quality Studio

PSNR Checker

Avisynth plugins (SSIM, VQM)

Supported objective metrics

8

3

1

2

Comparative analysis (comparison of two codecs in one pass)

+

-

-

-

Supported input formats

AVI, AviSynth, BMP, YUV

AVI

AVI

Formats, supported by AviSynth

User interface

GUI

GUI

GUI

Called from AviSynth scripts (you need to learn AviSynth scripting)

Automatically saving frames with maximum difference in quality

+

-

-

-

Plug-ins interface

+

-

-

-

Plots with results of the comparison

+

-

-

-

Video with metric value visualization

+

-

-

-

 

Contacts

 

e-mail: 

 

Other resources

Video resources:

Public MSU video filters
Here are available VirtualDub and AviSynth filters. Commonly we develop a whole family of some kind of a filter. Generally there are also versions optimized for PC and hardware implementations (ASIC/FPGA/DSP). These optimized versions can be licensed to companies. Please contact us for details via video(at)graphics.cs.msu_ru.
MSU filters for companies
We are working with Intel, Samsung, RealNetworks and other companies on adapting our filters other video processing algorithms for specific video streams, applications and hardware like TV-sets, graphics cards, etc. Some of such projects are non-exclusive. Also we have internal researches. Please let us know via video(at)graphics.cs.msu_ru if you are interested in acquiring a license for such filters or making a custom R&D project on video processing, compression, computer vision.
Codecs comparisons
Objective and subjective quality evaluation
tests for video and image codecs
Ads link: x264 parameters efficiency comparison
Video quality metrics
Programs with different objective and subjective video quality metrics implementation
Video codecs projects
Different research and development
projects on video codecs
Other
Other information

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Last updated: 15-October-2007

Search (Russian):
Server size: 7467 files, 922Mb (Server statistics)

Project updated by
Server Team and MSU Video Group


Project sponsored by YUVsoft Corp.

Project supported by MSU Graphics & Media Lab

 
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This document available from http://www.compression.ru/video/quality_measure/video_measurement_tool_en.html