MSU Screen Capture Lossless Codec
MSU Graphics & Media Lab (Video Group)
Take a look at this article on the new site! Follow the link
https://videoprocessing.ai/codecs/screen-capture-lossless-codec.html
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:
- Added 16-bit videos support.
Changes in version 1.1:
- Support of forcing key frames.
- Now supports RGB24 and RGB32. Can easily be used in CamStudio.
- A little better compression. Can play files created with version 1.0.
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 sequences 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. Sequences 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 sequences 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 sequences 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 (640?480, 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
Known problems and restrictions:
- Video image width must be even.
- (Please let us know if any problems!)
Other materials
Video resources:
Projects on 3D and stereo video processing and analysis
- MSU S3D-video analysis reports
- MSU 3D Devices Testing
- 3D Displays Video Generation
- 3D Displays Video Capturing
- Stereo Video Depth Map Generation
- SAVAM Saliensy-Aware Video Compression & Dataset
- Video Matting Benchmark
- Video Inpainting Benchmark
MSU Video Quality Measurement tools
Programs with different objective and subjective video quality metrics implementation
- MSU Video Quality Measurement Tool - objective metrics for codecs and filters comparison
- MSU Human Perceptual Quality Metric - several metrics for exact visual tests
Objective and subjective quality evaluation
tests for video and image codecs
- MSU Video Codecs Comparison 2025
- MSU Video Codecs Comparison 2023-2024
- MSU Video Codecs Comparison 2022
- MSU Video Codecs Comparison 2021
- MSU Video Codecs Comparison 2020
- MSU Cloud Benchmark 2020
- Cloud Encoding Services Comparison 2019
- HEVC/AV1 Codec Comparison 2019
- HEVC/AV1 Codec Comparison 2018
- HEVC/AV1 Codec Comparison 2017
- HEVC Codec Comparison 2016
- HEVC Codec Comparison 2015
- 9-th MPEG4-AVC/H.264 Comparison
- 8-th MPEG4-AVC/H.264 Comparison
- 7-th MPEG4-AVC/H.264 Comparison
- 6-th MPEG4-AVC/H.264 Comparison
Here are available VirtualDub and AviSynth filters. For a given type of digital video filtration we typically develop a family of different algorithms and implementations. 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
- MSU Noise Estimation
- MSU Frame Rate Conversion
- MSU Image Restoration
- MSU Denoising
- MSU Old Cinema
- MSU Deblocking
- MSU Smart Brightness and Contrast
- MSU Smart Sharpen
- MSU Noise generation
- MSU Noise estimation
- MSU Motion Estimation Information
- MSU Subtitles removal
- MSU Logo removal
- MSU Deflicker
- MSU Field Shift Fixer AviSynth plug-in
- MSU StegoVideo
- MSU Cartoonizer
- MSU SmartDeblocking
- MSU Color Enhancement
- MSU Old Color Restoration
- MSU TV Commercial Detector
- MSU filters FAQ
- MSU filters statistics
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.
- 3D Displays Video Generation
- 3D Displays Video Capturing
- Stereo Video Depth Map Generation
- Automatic Objects Segmentation
- Semiautomatic Objects Segmentation
- New Frame Rate Conversion
- New Deinterlacer
- 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
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 information
- Crazy gallery (filters screams :)
- License for commercial usage of MSU VideoGroup Public Software (please be careful: some soft like metrics has another license!)
Server size: 8069 files, 1215Mb (Server statistics)
Project updated by
Server Team and
MSU Video Group
Project sponsored by YUVsoft Corp.
Project supported by MSU Graphics & Media Lab