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  2. Comparison of video container formats - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_video...

    Royalties on codecs [L] Yes Yes Yes Yes [19] Yes Yes Audio Video Interleave (AVI) .avi Microsoft: 1992-11 Proprietary [20] Yes [M] Yes [N] Yes No Yes Needs alterations Material Exchange Format (MXF) .mxf SMPTE: 2004-09 Patent-free [21] Yes Yes No Yes [21] Yes No MPEG program stream (PS) .m2p, .ps [O] MPEG: 1993-08 Patent-free [22] Yes Yes [P ...

  3. OGG - Wikipedia

    en.wikipedia.org/wiki/OGG

    Ogg Vorbis, the Vorbis free software/open source audio codec, commonly used with the Ogg container; Oxoguanine glycosylase, a DNA glycosylase enzyme; Others.

  4. Comparison of audio coding formats - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_audio_coding...

    First public release date is first of either specification publishing or source releasing, or in the case of closed-specification, closed-source codecs, is the date of first binary releasing. Many developing codecs have pre-releases consisting of pre-1.0 versions and perhaps 1.0 release candidates (RCs), although 1.0 may not necessarily be the ...

  5. Vorbis - Wikipedia

    en.wikipedia.org/wiki/Vorbis

    Vorbis I is a forward-adaptive monolithic transform codec based on the modified discrete cosine transform (MDCT). [43] Vorbis uses the modified discrete cosine transform for converting sound data from the time domain to the frequency domain .

  6. List of codecs - Wikipedia

    en.wikipedia.org/wiki/List_of_codecs

    Linear pulse-code modulation (LPCM, generally only described as PCM) is the format for uncompressed audio in media files and it is also the standard for CD-DA; note that in computers, LPCM is usually stored in container formats such as WAV, AIFF, or AU, or as raw audio format, although not technically necessary.

  7. Xiph.Org Foundation - Wikipedia

    en.wikipedia.org/wiki/Xiph.Org_Foundation

    The Xiph.Org Foundation is a nonprofit organization that produces free multimedia formats and software tools. It focuses on the Ogg family of formats, the most successful of which has been Vorbis, an open and freely licensed audio format and codec designed to compete with the patented WMA, MP3 and AAC.

  8. List of open-source codecs - Wikipedia

    en.wikipedia.org/wiki/List_of_open-source_codecs

    This is a listing of open-source codecs—that is, open-source software implementations of audio or video coding formats, audio codecs and video codecs respectively. Many of the codecs listed implement media formats that are restricted by patents and are hence not open formats.

  9. Audio codec - Wikipedia

    en.wikipedia.org/wiki/Audio_codec

    An audio codec, or audio decoder is a device or computer program capable of encoding or decoding a digital data stream (a codec) that encodes or decodes audio. [1] ...