YUVsoft's Lossless Video Codec
Original author(s) Maxim Smirnov
Developer(s) YUVsoft
Stable release
Development status Unmaintained
Written in C++
Operating system Microsoft Windows
Platform IA-32
Available in English
Type lossless video codec
License Proprietary, free for non-commercial use
Website www.yuvsoft.com/2d-technologies/lossless-video-codec/

YULS or YUVsoft's Lossless Video Codec, a lossless video codec developed by YUVsoft, was designed to produce highly compressed lossless video. Compared with many lossless video codecs, YULS has the best compression ratio.[1]


Version Changes[2]
  • compression ratio improved by 5%
  • YV12 and YUY2 are no longer converted to RGB24
  • 2-4% speed increase
  • Handling of incorrect state loading
  • 2-3% speed increase
  • persistent state
  • error handling improved
  • dialog windows reworked
1.0.0 Initial public release


  1. Seleznev, Iwan & Smirnov, Maxim (March 2007), Vatolin, Dmitriy, ed., "Lossless Video Codecs Comparison '2007" (PDF), Video Group, MSU Graphics & Media Lab, retrieved 2011-11-27
  2. "YUVsoft's Lossless Video Codec Change Log" (txt), YUVSoft, retrieved 2011-11-27
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