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Royalties on codecs [L] Yes Yes Yes Yes [19] Yes Yes Audio Video Interleave (AVI) .avi Microsoft: 1992-11 Proprietary [20] Yes [M] Yes [N] Yes No Yes Needs alterations Material Exchange Format (MXF) .mxf SMPTE: 2004-09 Patent-free [21] Yes Yes No Yes [21] Yes No MPEG program stream (PS) .m2p, .ps [O] MPEG: 1993-08 Patent-free [22] Yes Yes [P ...
DIVX (Digital Video Express) is a discontinued digital video format. Created in part by Circuit City, it was an unsuccessful attempt to create an alternative to video rental in the United States.
The quality the codec can achieve is heavily based on the compression format the codec uses. A codec is not a format, and there may be multiple codecs that implement the same compression specification – for example, MPEG-1 codecs typically do not achieve quality/size ratio comparable to codecs that implement the more modern H.264 specification.
DivX, LLC's offerings have expanded beyond the codec to include software for viewing and authoring DivX-encoded video. DivX, LLC also licenses its technologies to manufacturers of consumer electronics devices and components used in these devices, of which over 1 billion DivX-enabled devices [ 2 ] have shipped worldwide.
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.
That is the case with some video file formats, such as WebM (.webm), Windows Media Video (.wmv), Flash Video (.flv), and Ogg Video (.ogv), each of which can only contain a few well-defined subtypes of video and audio coding formats, making it relatively easy to know which codec will play the file.
This is a listing of open-source codecs—that is, open-source software implementations of audio or video coding formats, audio codecs and video codecs respectively. Many of the codecs listed implement media formats that are restricted by patents and are hence not open formats.
Although video coding formats such as H.264 are sometimes referred to as codecs, there is a clear conceptual difference between a specification and its implementations. Video coding formats are described in specifications, and software, firmware , or hardware to encode/decode data in a given video coding format from/to uncompressed video are ...