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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.
Bayer video codecs. CinemaDNG (created by Adobe; used in Blackmagic cameras) Redcode RAW (used in RED cameras ) – a modified version of JPEG 2000 [76] libredcode. ArriRaw (used in Arri cameras) Cineform RAW (used in Silicon Imaging cameras) CineForm-SDK. Blackmagic RAW (used in Blackmagic cameras) Blackmagic RAW SDK.
Video file format. 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 ...
A video codec is software or hardware that compresses and decompresses digital video. In the context of video compression, codec is a portmanteau of encoder and decoder, while a device that only compresses is typically called an encoder, and one that only decompresses is a decoder . The compressed data format usually conforms to a standard ...
For example, x264 is a widely used open source implementation of the heavily patent encumbered MPEG-4 AVC video compression standard. Video codecs [ edit ] x264 – H.264/MPEG-4 AVC implementation. x264 is not a codec (en co der/ dec oder); it is just an encoder (it cannot decode video).
libvpx. libvpx is a free software video codec library from Google and the Alliance for Open Media (AOMedia). It serves as the reference software implementation for the VP8 and VP9 video coding formats, and for AV1 a special fork named libaom that was stripped of backwards compatibility. As free software it is published also in source code under ...
As an example of conflation, Chromium's and Mozilla's pages listing their video format support both call video coding formats such as H.264 codecs. 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 ...
An audio file format is a file format for storing digital audio data on a computer system. The bit layout of the audio data (excluding metadata) is called the audio coding format and can be uncompressed, or compressed to reduce the file size, often using lossy compression. The data can be a raw bitstream in an audio coding format, but it is ...