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VP3
On2 TrueMotion VP3 is a (royalty-free) lossy video compression format and video codec. It is an incarnation of the TrueMotion video codec, a series of video codecs developed by On2 Technologies. There is no formal specification for the VP3 bitstream format beyond the VP3 source code published by On2 Technologies. In 2003, Mike Melanson created an incomplete description of the VP3 bitstream format and decoding process at a higher level than source code, with some help from On2 and the Xiph.Org Foundation. History VP3 was originally a proprietary and patented video codec. On2 TrueMotion VP3.1 was introduced in May 2000 followed three months later by the VP3.2 release. Later that year, On2 announced VP3 plugins for QuickTime and RealPlayer. In May 2001, On2 released the beta version of its new VP4 proprietary codec. In June 2001, On2 also released a VP3 codec implementation for Microsoft Windows where the encoder was priced at $39.95 for personal use, and $2,995 for limited comme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theora
Theora is a free file format, free Lossy compression, lossy video compression format. It is developed by the Xiph.Org Foundation and distributed without licensing fees alongside their other free and open media projects, including the Vorbis audio format and the Ogg container. The libtheora video codec is the reference implementation (computing), reference implementation of the Theora video compression format being developed by the Xiph.Org Foundation. Theora is derived from the formerly Proprietary software, proprietary VP3 codec, released into the public domain by On2 Technologies. It is broadly comparable in design and bitrate efficiency to MPEG-4 Part 2, early versions of Windows Media Video, and RealVideo while lacking some of the features present in some of these other codecs. It is comparable in open standards philosophy to the BBC's Dirac (video compression format), Dirac codec. Theora is named after Theora Jones, Edison Carter's Controller on the ''Max Headroom (TV ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TrueMotion S
On2 Technologies, formerly known as The Duck Corporation, was a small publicly traded company (on the American Stock Exchange), founded in New York City in 1992 and headquartered in Clifton Park, New York, that designed video codec technology. It created a series of video codecs called TrueMotion (including TrueMotion S, TrueMotion 2, TrueMotion RT 2.0, TrueMotion VP3, 4, 5, 6, 7 and 8). In February 2010, On2 Technologies was acquired by Google for an estimated $124.6 million. On2's VP8 technology became the core of Google's WebM video file format. History While known by the name ''The Duck Corporation'', they developed TrueMotion S, a codec that was used by some games for full motion video (FMV) sequences during the 1990s. The original office of the Duck Corporation was founded in New York City by Daniel B. Miller, Victor Yurkovsky, and Stan Marder. In 1994 Duck opened its first "satellite" engineering office in Colonie, NY under the management of Eric Ameres. Miller b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TrueMotion
On2 Technologies, formerly known as The Duck Corporation, was a small publicly traded company (on the American Stock Exchange), founded in New York City in 1992 and headquartered in Clifton Park, New York, that designed video codec technology. It created a series of video codecs called TrueMotion (including TrueMotion S, TrueMotion 2, TrueMotion RT 2.0, TrueMotion VP3, 4, 5, 6, 7 and 8). In February 2010, On2 Technologies was acquired by Google for an estimated $124.6 million. On2's VP8 technology became the core of Google's WebM video file format. History While known by the name ''The Duck Corporation'', they developed TrueMotion S, a codec that was used by some games for full motion video (FMV) sequences during the 1990s. The original office of the Duck Corporation was founded in New York City by Daniel B. Miller, Victor Yurkovsky, and Stan Marder. In 1994 Duck opened its first "satellite" engineering office in Colonie, NY under the management of Eric Ameres. Miller b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
On2 Technologies
On2 Technologies, formerly known as The Duck Corporation, was a small publicly traded company (on the American Stock Exchange), founded in New York City in 1992 and headquartered in Clifton Park, New York, that designed video codec technology. It created a series of video codecs called TrueMotion (including TrueMotion S, TrueMotion 2, TrueMotion RT 2.0, TrueMotion VP3, 4, 5, 6, 7 and 8). In February 2010, On2 Technologies was acquired by Google for an estimated $124.6 million. On2's VP8 technology became the core of Google's WebM video file format. History While known by the name ''The Duck Corporation'', they developed TrueMotion S, a codec that was used by some games for full motion video (FMV) sequences during the 1990s. The original office of the Duck Corporation was founded in New York City by Daniel B. Miller, Victor Yurkovsky, and Stan Marder. In 1994 Duck opened its first "satellite" engineering office in Colonie, NY under the management of Eric Ameres. Miller b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RealPlayer
RealPlayer, formerly RealAudio Player, RealOne Player and RealPlayer G2, is a cross-platform media player app, developed by RealNetworks. The media player is compatible with numerous container file formats of the multimedia realm, including MP3, MP4, QuickTime File Format, Windows Media format, and the proprietary RealAudio and RealVideo formats. RealPlayer is also available for other operating systems; Linux, Unix, Palm OS, Windows Mobile, and Symbian versions have been released. The program is powered by an underlying open-source media engine called Helix. History The first version of RealPlayer was introduced on April 3, 1995 as "RealAudio Player" and was one of the first media players capable of streaming media over the Internet. Then, version 4.01 of RealPlayer was included as a selectable Internet tool in Windows 98's installation package. Subsequent versions of the software were titled "RealPlayer G2" (version 6) and "RealOne Player" (version 9), while free "Basic" v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Video Codecs
The following is a list of compression formats and related codecs. Audio compression formats Non-compression * Linear pulse-code modulation (LPCM, generally only described as PCM) is the format for uncompressed audio in media files and it is also the standard for CD-DA; note that in computers, LPCM is usually stored in container formats such as WAV, AIFF, or AU, or as raw audio format, although not technically necessary. ** FFmpeg * Pulse-density modulation (PDM) ** Direct Stream Digital (DSD) is standard for Super Audio CD *** foobar2000 Super Audio CD Decoder (based on MPEG-4 DST reference decoder) *** FFmpeg (based on dsd2pcm) * Pulse-amplitude modulation (PAM) Lossless compression * Actively used ** Most popular *** Free Lossless Audio Codec (FLAC) **** libFLAC **** FFmpeg *** Apple Lossless Audio Codec (ALAC) **** Apple QuickTime **** libalac **** FFmpeg **** Apple Music *** Monkey's Audio (APE) **** Monkey's Audio SDK **** FFmpeg (decoder only) *** OptimFROG (OFR) *** T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nullsoft Streaming Video
Nullsoft Streaming Video (NSV) was a media container designed for streaming video content over the Internet. NSV was developed by Nullsoft, the makers of Winamp. The NSV format is another example of streaming video formats, offered by various companies and media players. Windows Media, QuickTime File Format and RealMedia streams are just a few examples of these, and each have their benefits and shortcomings. NSV, by default configuration, used MP3 as its standard audio format, with VP3 as the video format. Various hacks and codec installations allowed NSV to use Ogg Vorbis for audio and later updates of the VP codecs for video. One of the shortfalls of most streaming formats often comes from the difficulty in finding streams, or at least some form of directory service; and in some cases, none are readily available to the public at all. With Nullsoft's SHOUTcast service, a media streaming and directory system, the NSV format became popular, along with SHOUTcast's listings of Stre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GNU Lesser General Public License
The GNU Lesser General Public License (LGPL) is a free-software license published by the Free Software Foundation (FSF). The license allows developers and companies to use and integrate a software component released under the LGPL into their own (even proprietary) software without being required by the terms of a strong copyleft license to release the source code of their own components. However, any developer who modifies an LGPL-covered component is required to make their modified version available under the same LGPL license. For proprietary software, code under the LGPL is usually used in the form of a shared library, so that there is a clear separation between the proprietary and LGPL components. The LGPL is primarily used for software libraries, although it is also used by some stand-alone applications. The LGPL was developed as a compromise between the strong copyleft of the GNU General Public License (GPL) and more permissive licenses such as the BSD licenses and the MIT L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RealNetworks
RealNetworks, Inc. is a provider of artificial intelligence and computer vision based products. RealNetworks was a pioneer in Internet streaming software and services. They are based in Seattle, Washington, United States. The company also provides subscription-based online entertainment services and mobile entertainment and messaging services. History RealNetworks (then known as Progressive Networks) was founded in 1994 by Rob Glaser, an ex-Microsoft executive, and a management team including Phil Barrett, Andy Sharpless, and Stephen Buerkle. The original goal of the company was to provide a distribution channel for politically progressive content. It evolved into a technology venture to leverage the Internet as an alternative distribution medium for audio broadcasts. Progressive Networks became RealNetworks in September 1997, in advance of the company's initial public offering (IPO) in October 1997 when shares of the company started trading on Nasdaq as "RNWK". RealNetw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reference Implementation
In the software development process, a reference implementation (or, less frequently, sample implementation or model implementation) is a program that implements all requirements from a corresponding specification. The reference implementation often accompanies a technical standard, and demonstrates what should be considered the "correct" behavior of any other implementation of it. Characteristics and examples Reference implementations of algorithms, for instance cryptographic algorithms, are often the result or the input of standardization processes. In this function they are often dedicated to the public domain with their source code as public domain software. Examples are the first CERN's httpd, Serpent cipher, base64 variants, and SHA-3. The Openwall Project maintains a list of several algorithms with their reference source code in the public domain. A reference implementation may or may not be production quality. For example, the Fraunhofer reference implementation of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freeze (software Engineering)
In software engineering, a freeze is a point in time in the development process after which the rules for making changes to the source code or related resources become more strict, or the period during which those rules are applied. A freeze helps move the project forward towards a release or the end of an iteration by reducing the scale or frequency of changes, and may be used to help meet a roadmap. The exact rules depend on the type of freeze and the particular development process in use; for example, they may include only allowing changes which fix bugs, or allowing changes only after thorough review by other members of the development team. They may also specify what happens if a change contrary to the rules is required, such as restarting the freeze period. Common types of freezes are: * A (complete) specification freeze, in which the parties involved decide not to add any new requirement, specification, or feature to the feature list of a software project, so as to begin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Open Source License
An open-source license is a type of license for computer software and other products that allows the source code, blueprint or design to be used, modified and/or shared under defined terms and conditions. This allows end users and commercial companies to review and modify the source code, blueprint or design for their own customization, curiosity or troubleshooting needs. Open-source licensed software is mostly available free of charge, though this does not necessarily have to be the case. Licenses which only permit non-commercial redistribution or modification of the source code for personal use only are generally not considered as open-source licenses. However, open-source licenses may have some restrictions, particularly regarding the expression of respect to the origin of software, such as a requirement to preserve the name of the authors and a copyright statement within the code, or a requirement to redistribute the licensed software only under the same license (as in a copyl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
