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  2. MP4 file format - Wikipedia

    en.wikipedia.org/wiki/MP4_file_format

    The MP4 file format defined some extensions over the ISO Base Media File Format to support MPEG-4 visual/audio codecs and various MPEG-4 Systems features such as object descriptors and scene descriptions. Some of these extensions are also used by other formats based on the ISO base media file format (e.g., 3GP). [ 1]

  3. Audio file format - Wikipedia

    en.wikipedia.org/wiki/Audio_file_format

    An audio file format is a file format for storing digital audio data on a computer system. The bit layout of the audio data (excluding metadata) is called the audio coding format and can be uncompressed, or compressed to reduce the file size, often using lossy compression. The data can be a raw bitstream in an audio coding format, but it is ...

  4. Portable media player - Wikipedia

    en.wikipedia.org/wiki/Portable_media_player

    The name "MP4 player" was a marketing term for inexpensive portable media players, usually from little known or generic device manufacturers. [49] The name itself is a misnomer, since most MP4 players through 2007 were incompatible with the MPEG-4 Part 14 or the .mp4 container format. Instead, the term refers to their ability to play more file ...

  5. MPEG-4 - Wikipedia

    en.wikipedia.org/wiki/MPEG-4

    MPEG-4 is a group of international standards for the compression of digital audio and visual data, multimedia systems, and file storage formats. It was originally introduced in late 1998 as a group of audio and video coding formats and related technology agreed upon by the ISO/IEC Moving Picture Experts Group (MPEG) (ISO/IEC JTC 1/SC29/WG11) under the formal standard ISO/IEC 14496 – Coding ...

  6. Apple Lossless Audio Codec - Wikipedia

    en.wikipedia.org/wiki/Apple_Lossless_Audio_Codec

    Yes. The Apple Lossless Audio Codec ( ALAC ), also known as Apple Lossless, or Apple Lossless Encoder ( ALE ), is an audio coding format, and its reference audio codec implementation, developed by Apple Inc. for lossless data compression of digital music. After initially keeping it proprietary from its inception in 2004, in late 2011 Apple made ...

  7. How a file format brought an industry to its knees - Engadget

    www.engadget.com/2015-06-26-mp3-digital-music...

    When the MP3 format became accessible, after a long corporate battle, it eventually led to the rise of music piracy and simultaneous demise of CDs. But Witt reveals more than just the technology ...

  8. Comparison of YouTube downloaders - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_YouTube_down...

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Donate; Pages for logged out editors learn more

  9. ISO base media file format - Wikipedia

    en.wikipedia.org/wiki/ISO_base_media_file_format

    The ISO base media file format ( ISOBMFF) is a container file format that defines a general structure for files that contain time-based multimedia data such as video and audio. [ 3][ 4] It is standardized in ISO / IEC 14496-12, a.k.a. MPEG-4 Part 12, and was formerly also published as ISO/IEC 15444-12, a.k.a. JPEG 2000 Part 12.

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