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Ut Video Codec Suite
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<p>UT Video Codec Suite is a fast, <a href="/facts/Lossless_compression/LS702KsN">lossless</a> <a href="/facts/Video_codec/psfSuqg7">video codec</a>, developed by Takeshi Umezawa (梅澤 威志, <i>Umezawa Takeshi</i>) and released under the free <a href="/facts/GNU_General_Public_License/S75KhLSX">GNU General Public License</a>. The algorithm of UT video is based on the <a href="/facts/Huffman_code/dBgMBz48">Huffman code</a>. </p><p>UT video was developed as an alternative to <a href="/facts/HuffYUV/h0krtjGQ">HuffYUV</a>, in order to achieve better compression. It can handle <a href="/facts/Color_space/zFvEyfHv">color spaces</a> such as <a href="/facts/YUV422/w8hA6xnh">YUV422</a> (ULY2), <a href="/facts/RGB/3Be0zwCj">RGB</a> (ULRG), <a href="/facts/RGBA/gSIu9laE">RGBA</a> (ULRA) and, most recently, YUV420 (ULY0). </p><p>It has both <a href="/facts/X86/Kypq5fgu">x86</a> and <a href="/facts/X64/cyWvUFlP">x64</a> builds. Due to its <a href="/facts/Multithreading_(software)/hh8WHyPd">multithreading</a> support, this codec is also capable of encoding <a href="/facts/HDTV/AuE6FRFI">HDTV</a> material in real time. The codec requires support for the <a href="/facts/SSE2/cheNDPSK">SSE2</a> instruction set because it is heavily used for speed optimizations. </p><p>UT video uses the following <a href="/facts/FOURCC/4AxE2jJa">FOURCC</a> codes: ULY0, ULY2, ULRA, ULRG. </p><p>It is used in the screen recording software <a href="/facts/OBS_Studio/Hw6FJhaF">OBS Studio</a> when set to "Lossless" video quality. </p>