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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.
Some are combinations of common container formats and audio and video coding profiles, such as AVCHD and DivX formats. Although sometimes compared to DivX products, Xvid is neither a container format nor a video format, it is a software library that encodes video using specific coding profiles of the common MPEG-4 ASP video format. Those types ...
As another example, in Cisco's announcement of a free-as-in-beer video codec, the press release refers to the H.264 video coding format as a codec ("choice of a common video codec"), but calls Cisco's implementation of a H.264 encoder/decoder a codec shortly thereafter ("open-source our H.264 codec"). [7] A video coding format does not dictate ...
A video file format is a type of file format for storing digital video data on a computer system. Video is almost always stored using lossy compression to reduce the file size. A video file normally consists of a container (e.g. in the Matroska format) containing visual (video without audio) data in a video coding format (e.g. VP9 ) alongside ...
Video codecs seek to represent a fundamentally analog data set in a digital format. Because of the design of analog video signals, which represent luminance (luma) and color information (chrominance, chroma) separately, a common first step in image compression in codec design is to represent and store the image in a YCbCr color space.
A YouTube video statistics with AVC (H.264) video codec and Opus audio format In 2009, the HTML5 working group was split between supporters of Ogg Theora , a free video format which is thought to be unencumbered by patents, and H.264, which contains patented technology.
High Efficiency Image File Format – a file format for images and image sequences based on HEVC; Comparison of video codecs; List of open-source codecs. x265 – an open-source software implementation of HEVC; List of multimedia (audio/video) codecs. H.264/MPEG-4 AVC – the video standard predecessor of HEVC
Blackbird FORscene video codec; Firebird [62] Original FORscene video codec; Digital Video Interactive standards: RTV 2.1 (a.k.a. Indeo 2) FFmpeg (decoder only) PLV (Production Level Video) ActionMedia II driver (decoder only) Indeo 3 [63] /4/5 [64] FFmpeg (decoder only) Microsoft Video 1 (MSV1, MS-CRAM, based on MotiVE) FFmpeg (decoder only)