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Α video codec is software or a device that provides encoding and decoding for digital video, and which may or may not include the use of video compression and/or decompression. Most codecs are typically implementations of video coding formats. The compression may employ lossy data compression, so that quality-measurement issues become important.
A format is the layout plan for data produced or consumed by a codec.. 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.
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 ...
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 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 ...
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.
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; AV1 – an open format developed by the Alliance for Open Media as a successor to VP9 and a competitor to HEVC
Alparysoft Lossless Video Codec (Alpary) Apple Animation (QuickTime RLE) QuickTime; FFmpeg; ArithYuv; AV1. libaom; AVIzlib LCL (VfW codec) MSZH and ZLIB [46] FFmpeg; Autodesk Animator Codec (AASC) FFmpeg (decoder only) CAI Format; CamStudio GZIP/LZO FFmpeg (decoder only) Chennai Codec (EVX-1) Cairo Experimental Video Codec (open source) Dxtory ...