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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. HandBrake - Wikipedia

   en.wikipedia.org/wiki/HandBrake

   HandBrake transcodes video and audio from nearly any format to a handful of modern ones, but it does not defeat or circumvent copy protection. [14] One form of input is DVD-Video stored on a DVD, in an ISO image of a DVD, or on any data storage device as a VIDEO_TS folder. As with DVDs, HandBrake does not directly support the decryption of Blu ...

4. MPEG-1 - Wikipedia

   en.wikipedia.org/wiki/MPEG-1

   MPEG-1 is a standard for lossy compression of video and audio.It is designed to compress VHS-quality raw digital video and CD audio down to about 1.5 Mbit/s (26:1 and 6:1 compression ratios respectively) [2] without excessive quality loss, making video CDs, digital cable/satellite TV and digital audio broadcasting (DAB) practical.

5. 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).

6. 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.

7. WavPack - Wikipedia

   en.wikipedia.org/wiki/WavPack

   WavPack compression can compress (and losslessly restore) 8, 16, 24, and 32-bit fixed-point, and 32-bit floating-point PCM audio files in the .WAV file format. It can also handle DSD input in DSDIFF or DSF format. [2] It also supports surround sound streams and high sampling rates. Like other lossless compression schemes, the data reduction ...

8. WebM - Wikipedia

   en.wikipedia.org/wiki/WebM

   WebM is an open media file format designed for the web. WebM files consist of video streams compressed with the VP8 video codec and audio streams compressed with the Vorbis audio codec. The WebM file structure is based on the Matroska media container. ^ WebM (Partial draft). Sustainability of Digital Formats.

9. MP3 - Wikipedia

   en.wikipedia.org/wiki/MP3

   The MP3 lossy compression algorithm takes advantage of a perceptual limitation of human hearing called auditory masking. In 1894, the American physicist Alfred M. Mayer reported that a tone could be rendered inaudible by another tone of lower frequency. [18] In 1959, Richard Ehmer described a complete set of auditory curves regarding this ...