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2. Comparison of video codecs - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_video_codecs

   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.

3. 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.

4. 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.

5. Data compression - Wikipedia

   en.wikipedia.org/wiki/Data_compression

   MPEG 1&2 video compression intro (pdf format) at the Wayback Machine (archived September 28, 2007) hydrogenaudio wiki comparison; Introduction to Data Compression by Guy E Blelloch from CMU; Explanation of lossless signal compression method used by most codecs; Videsignline – Intro to Video Compression at the Wayback Machine (archived 2010-03-15)

6. 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 .

7. List of open-source codecs - Wikipedia

   en.wikipedia.org/wiki/List_of_open-source_codecs

   Musepack – Lossy compression; based on MP2 format, with many improvements. Speex – Low bitrate compression, primarily voice; developed by Xiph.Org Foundation. Deprecated in favour of Opus according to www.speex.org. CELT – Lossy compression for low-latency audio communication; libopus – A reference implementation of the Opus format, the ...