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  2. Video coding format - Wikipedia

    en.wikipedia.org/wiki/Video_coding_format

    A video coding format [a] (or sometimes video compression format) is a content representation format of digital video content, such as in a data file or bitstream.It typically uses a standardized video compression algorithm, most commonly based on discrete cosine transform (DCT) coding and motion compensation.

  3. Data compression - Wikipedia

    en.wikipedia.org/wiki/Data_compression

    Genetics compression algorithms are the latest generation of lossless algorithms that compress data (typically sequences of nucleotides) using both conventional compression algorithms and genetic algorithms adapted to the specific datatype. In 2012, a team of scientists from Johns Hopkins University published a genetic compression algorithm ...

  4. Context-adaptive binary arithmetic coding - Wikipedia

    en.wikipedia.org/wiki/Context-adaptive_binary...

    Context-adaptive binary arithmetic coding (CABAC) is a form of entropy encoding used in the H.264/MPEG-4 AVC [1] [2] and High Efficiency Video Coding (HEVC) standards. It is a lossless compression technique, although the video coding standards in which it is used are typically for lossy compression applications.

  5. VP9 - Wikipedia

    en.wikipedia.org/wiki/VP9

    A main user of VP9 is Google's popular video platform YouTube, which offers VP9 video at all resolutions [52] along with Opus audio in the WebM file format, through DASH streaming. Another early adopter was Wikipedia (specifically Wikimedia Commons , which hosts multimedia files across Wikipedia's subpages and languages).

  6. Video codec - Wikipedia

    en.wikipedia.org/wiki/Video_codec

    A short video explaining the concept of video codecs. 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.

  7. Video compression picture types - Wikipedia

    en.wikipedia.org/wiki/Video_compression_picture...

    The three major picture types used in the different video algorithms are I, P and B. [1] They are different in the following characteristics: I‑frames are the least compressible but don't require other video frames to decode. P‑frames can use data from previous frames to decompress and are more compressible than I‑frames.

  8. High Efficiency Video Coding - Wikipedia

    en.wikipedia.org/wiki/High_Efficiency_Video_Coding

    In October 2015, MPEG and VCEG formed Joint Video Exploration Team (JVET) [199] to evaluate available compression technologies and study the requirements for a next-generation video compression standard. The new algorithm should have 30–50% better compression rate for the same perceptual quality, with support for lossless and subjectively ...

  9. Lossless compression - Wikipedia

    en.wikipedia.org/wiki/Lossless_compression

    The "trick" that allows lossless compression algorithms, used on the type of data they were designed for, to consistently compress such files to a shorter form is that the files the algorithms are designed to act on all have some form of easily modeled redundancy that the algorithm is designed to remove, and thus belong to the subset of files ...