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MPEG-1 Audio Layer III HD (more commonly known by its abbreviation mp3HD) was an audio compression codec developed by Technicolor, formerly known as Thomson. [ 3 ] It featured lossless compression of audio data, and was usually backwards compatible with the MP3 format by storing two data streams in one file.
GIF was one of the first two image formats commonly used on Web sites, the other being the black-and-white XBM. [5] In September 1995 Netscape Navigator 2.0 added the ability for animated GIFs to loop. While GIF was developed by CompuServe, it used the Lempel–Ziv–Welch (LZW) lossless data compression algorithm patented by Unisys in 1985.
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The Moving Picture Experts Group (MPEG) designed MP3 as part of its MPEG-1, and later MPEG-2, standards.MPEG-1 Audio (MPEG-1 Part 3), which included MPEG-1 Audio Layer I, II, and III, was approved as a committee draft for an ISO/IEC standard in 1991, [14] [15] finalized in 1992, [16] and published in 1993 as ISO/IEC 11172-3:1993. [7]
There is a trade-off between size and sound quality of lossily compressed files; most formats allow different combinations—e.g., MP3 files may use between 32 (worst), 128 (reasonable) and 320 (best) kilobits per second. [67] There are also royalty-free lossy formats like Vorbis for general music and Speex and Opus used for
Free Studio (freeware) Freemake Video Converter (freeware) Format Factory (freeware) HandBrake Video Converter (GPL-licensed free software) VLC Video Player (GPL-licensed free software) Any Video Converter (freeware and commercial) FFmpeg (GPL-licensed free software) Easy 7-Zip (7z)-Via Extraction of Audios (MP3) and Videos (no audio)
In addition to standalone audio-only applications of file playback in MP3 players or computers, digitally compressed audio streams are used in most video DVDs, digital television, streaming media on the Internet, satellite and cable radio, and increasingly in terrestrial radio broadcasts.
Microsoft GIF Animator is a historical computer software program for Microsoft Windows to create simple animated GIF files based on the GIF89a file format.It was freely downloadable from the Microsoft Download Center but is now only available through MSDN and on third-party download sites.