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2. Theora - Wikipedia

   en.wikipedia.org/wiki/Theora

   Theora is a variable-bitrate, DCT -based video compression scheme. Like most common video codecs, Theora used chroma subsampling, block -based motion compensation and an 8-by-8 DCT block. Pixels are grouped into various structures, namely blocks, super blocks, and macroblocks. Theora supports intra-coded frames ("keyframes") and forward ...

3. WebP - Wikipedia

   en.wikipedia.org/wiki/WebP

   WebP is a raster graphics file format developed by Google intended as a replacement for JPEG, PNG, and GIF file formats. It supports both lossy and lossless compression, [8] as well as animation and alpha transparency. Google announced the WebP format in September 2010, and released the first stable version of its supporting library in April 2018.

4. List of open-source codecs - Wikipedia

   en.wikipedia.org/wiki/List_of_open-source_codecs

   Fraunhofer FDK AAC – Lossy compression (AAC) FFmpeg codecs in the libavcodec library, e.g. AC-3, AAC, ADPCM, PCM, Apple Lossless, FLAC, WMA, Vorbis, MP2, etc. FAAD2 – open-source decoder for Advanced Audio Coding. There is also FAAC, the same project's encoder, but it is proprietary (but still free of charge).

5. Comparison of video codecs - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_video_codecs

   Comparison of video codecs. 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 ...

6. Weissman score - Wikipedia

   en.wikipedia.org/wiki/Weissman_score

   The Weissman score is a performance metric for lossless compression applications. It was developed by Tsachy Weissman, a professor at Stanford University, and Vinith Misra, a graduate student, at the request of producers for HBO's television series Silicon Valley, a television show about a fictional tech start-up working on a data compression algorithm.

7. Video coding format - Wikipedia

   en.wikipedia.org/wiki/Video_coding_format

   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.

8. Dirac (video compression format) - Wikipedia

   en.wikipedia.org/wiki/Dirac_(video_compression...

   Dirac (and Dirac Pro, a subset standardised as SMPTE VC-2) is an open and royalty-free video compression format, specification and software video codec developed by BBC Research & Development. [ 4][ 5][ 6] Dirac aimed to provide high-quality video compression for Ultra HDTV and competed with existing formats such as H.264.

9. x265 - Wikipedia

   en.wikipedia.org/wiki/X265

   x265 is an encoder for creating digital video streams in the High Efficiency Video Coding (HEVC/H.265) video compression format developed by the Joint Collaborative Team on Video Coding (JCT-VC). [4][5][6] It is available as a command-line app or a software library, under the terms of GNU General Public License (GPL) version 2 or later; however ...