What is AVI?
AVI stands for Audio Video Interleave. It is a special case of the RIFF (Resource Interchange File Format). AVI is defined by Microsoft. AVI is the most common format for audio/video data on the PC. AVI is an example of a de facto (by fact) standard.
What is Divx?
Digital Video Express (DivX) is a digital video compression format based on the MPEG-4 technology. DivX files can be downloaded over high-speed lines in a relatively short time without sacrificing the quality of the digital video. Often used on the Internet to exchange video files.Originally developed for DVD encoding (650 mb = 80-90 min. at 640x480, standard bitrate), DivX has become the internet video format of choice for high-quality productions.
What is Xvid?
XviD is a free and open source MPEG-4 video codec. XviD was created by a group of volunteer programmers after the OpenDivX source was closed in July 2001.
XviD features MPEG-4 Advanced Simple Profile features such as b-frames, global and quarter pixel motion compensation, lumi masking, trellis quantization, and H.263, MPEG and custom quantization matrices.
XviD is a primary competitor of DivX (XviD being DivX spelled backwards). While DivX is closed source and may only run on Windows, Mac OS and Linux, XviD is open source and can potentially run on any platform. What is ASF?
The Advanced Systems Format (ASF) is the file format used by Windows Media. Audio and/or Video content compressed with a wide variety of codecs can be stored in an ASF file and played back with the Windows Media Player (provided the appropriate codecs are installed), streamed with Windows Media Services or optionally packaged with Windows Media Rights Manager.
What is WMV?
WMV is a generic name of Microsoft's video encoding solutions and doesn't necessarily define the technology what it uses -- since version 7, WMV (Windows Media Video) Microsoft's proprietary compression format for motion video, Windows Media Video is used for both streaming and downloading content via the Internet.
What is WMA?
WMA (Windows Media Audio) Developed by Microsoft, Windows Media Audio is one of today's most popular 'Net audio formats. Though not as popular as MP3, WMA tends to outperform MP3 in the area of sound quality, particularly with files encoded at lower bitrates like 64 or 96 Kbps. This performance advantage makes it handy for applications like portable digital audio players, where total play time is limited by a finite amount of internal memory. The Windows Media Audio format features built-in copy protection abilities, unlike MP3. Windows® XP, Microsoft's current flagship operating system software, contains native support for WMA encoding, enabling users to create their own WMA music files.
What is MPEG?
MPEG (pronounced M-peg), which stands for Moving Picture Experts Group, is the name of family of standards used for coding audio-visual information (e.g., movies, video, music) in a digital compressed format. The major advantage of MPEG compared to other video and audio coding formats is that MPEG files are much smaller for the same quality. This is because MPEG uses very sophisticated compression techniques. Current standards that exist include, MPEG-1, MPEG-2, MPEG-3, and MPEG4. MPEG-1 is a standard for CD-ROM video and audio.MPEG-2 is a standard for full-screen, broadcast quality video.MPEG-4 is a standard for video telephony.
What is MOV/QT?
a file format for Quicktime movies and animations, developed by Apple Computer Co. it can actually be used to store both movies and sounds. A file with this extension could thus be either an audio file or a movie file. Both types are supported by many different platforms. Note though that there are several different versions of QuickTime files in use, and not all players will play all versions.
What is RM?
RM (RealMedia) is a digital sound and video file format that is the registered trademark of RealNetworks. This format is typically used to stream media through the net. It can be played with the RealOne player or with other media players using the Real Alternative codec. RealMedia (comprised of RealVideo, RealAudio, and other file formats created by Real) use compression algorithms for eliminating data.
What is RMVB?
Rmvb is an abbreviation for Real Media variable bitrate. It is a type of video file, playable with RealPlayer from RealNetworks |
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