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Ideas, implementation: Dmitry Popov

News:
[13.02.2007] Version 1.2.
[02.04.2006] Version 1.1.
[24.03.2006] Version 1.0.
Download! (v1.2)

This codec is free for non-commercial use.
To use it in commercial projects buy a license here.

Changes in version 1.2:

Changes in version 1.1:

This codec is intended for lossless compression of video taken from computer screen. It may be used for making software presentations, video lessons and tutorials, recording video from games etc.

In the future this codec may become a part of MSU Lossless Video Codec.

Several codecs compression ratio comparison

We've compared results of proposed algorithm with other available codecs results.

Comparison was made on several sequencies captured in DOSBox emulator from several games (UFO, Jazz Jackrabbit, Test Drive 3, Ultima 6 and Lemmings). All these games except Lemmings ran in 256 colors mode, Lemmings ran in 16 colors mode. Sequencies descriptions:

Caption	Resolution and number of frames
geoscape.avi	320x200, 1971
jazz.avi	320x200, 1974
td3.avi	320x200, 876
ultima6.avi	320x200, 2190
vgalemmi.avi	640x350, 4372

Here are a couple of frames from those sequencies so you can understand what kind of video we're talking about:

Codecs used in comparison are shown in the chart below. In this chart for each codec it is shown how many times better than Huffyuv it compressed file, i.e. Huffyuv_file_size / This_codec_file_size. In all the codecs maximum compression settings were chosen.

Initial sequencies were compressed with Zipped Motion Block Video codec in 8 bits per pixel mode, this is why it's compression ratio is so high. All the other codecs including MSU Screen Capture Codec worked in RGB24 mode. This chart demonstrates significant advantage of codecs which use delta-frames compared to the codecs which use only intra frames.

We also compared our codec with TechSmith EnSharpen which "delivers the highest compression in the industry for screen recording and animated content" (link).
We took the video sequence (640õ480, 214 frames, RGB16) used by TechSmith to demonstrate its superiority and compressed it with our codec 2 times better with the same key frame rate, even though EnSharpen worked in RGB16 and MSU Screen Capture worked in RGB24.
Resulting file: somewins.avi (150 KB).

A frame from this sequence:

Special thanks to Borg No. One for introducing ZMBV codec to us and inspiration to make a codec for this type of video.

Download

MSU Screen Capture Lossless Codec, version 1.2 from 13.02.2007

• MSU Screen Capture Lossless Codec 1.2, EXE installer (111kb)
• License for MSU VideoGroup Software.

Known problems and restrictions:

Other materials

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 Cartoon Restore (New!) MSU Cartoon Restore (New!) MSU Noise Estimation (New!) MSU Frame Rate Conversion (New!) MSU Image Restoration (New!) MSU Denoising (Top!) MSU Old Cinema MSU Deblocking (Top!) MSU Smart Brightness and Contrast (Top!) MSU Smart Sharpen (Top!) MSU Noise generation MSU Noise estimation MSU Motion Estimation Information MSU Subtitles removal MSU Logo removal (Top!) MSU Deflicker (Top!) MSU Field Shift Fixer AviSynth plug-in MSU StegoVideo MSU Cartoonizer (Top!) MSU SmartDeblocking (Top!) MSU Color Enhancement MSU Old Color Restoration MSU filters FAQ (Read me!) MSU filters statistics	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. Automatic Objects Segmentation (New!) Semiautomatic Objects Segmentation New Frame Rate Conversion (New!) New Deinterlacer (New!) MSU-Samsung Deinterlacing Project Digital TV Signal Enhancement Old Film Recovery Tuner TV Restore Panorama Video2Photo SuperResolution SuperPrecision MSU-Samsung image and video resampling MSU-Samsung Frame Rate Conversion Motion Phase filter Deshaker (video stabilization) Film Grain/Degrain filter Deblurring filter Video Content Search
Codecs comparisons Objective and subjective quality evaluation tests for video and image codecs 4-th MPEG4-AVC/H.264 Comparison (New!) Lossless Video Codecs Comparison 2007 (New!) 3-rd MPEG4-AVC/H.264 Comparison HD Photo and JPEG 2000 Comparison MPEG-2 Decoders Crash Test (Top!) Subjective Compar. of 4 Modern Codecs (Top!) 2-nd MPEG-4 AVC/H.264 Comparison (Top!) FAQ of 2-nd H.264 Comparison 1-st MPEG-4 AVC/H.264 Codecs Comparison FAQ of 1-st H.264 Comparison JPEG 2000 Image Codecs Comparison (Top!) Lossless Video Codecs Comparison 2004 MPEG-4 SP/ASP Codecs Comparison (Top!) Video codecs comparison (old) Ext. link: x264 parameters efficiency comparison	Video quality metrics Programs with different objective and subjective video quality metrics implementation MSU Video Quality Metric - objective metrics for codecs and filters comparison (Top!) Implemented metrics short info: PSNR, Delta, MSAD, MSE, SSIM, VQM, MSU Blurring, MSU Blocking MSU Brightness Flicking Metric MSU Brightness Independent PSNR MSU Drop Frame Metric MSU Noise Estimation Metric MSU VQM Metric Tool FAQ MSU Human Perceptual Quality Metric - several metrics for exact visual tests (Top!) Implemented metrics short info: ITU-R BT.500-11: DSIS, DSCQS I & II, SCACJ; EBU: SAMVIQ; MSUCQE MSU PVQ Metric Tool FAQ
Video codecs projects Different research and development projects on video codecs MSU Lossless Video Codec (Top!) MSU Screen Capture Lossless Codec (Top!) MSU MPEG-2 Video Codec x264 Codec Improvement	Other Other information Crazy gallery (filters screams :) License for commercial usage of MSU VideoGroup Public Software (please be careful: some soft like metrics has another license!)

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Last updated: 12-October-2007

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Project sponsored by YUVsoft Corp.

Project supported by MSU Graphics & Media Lab