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  2. MP4 file format - Wikipedia

    en.wikipedia.org/wiki/MP4_file_format

    MPEG-4 Part 14, or MP4, is a digital multimedia container format most commonly used to store video and audio, but it can also be used to store other data such as subtitles and still images. Like most modern container formats, it allows streaming over the Internet. The only filename extension for MPEG-4 Part 14 files as defined by the ...

  3. Employment record book - Wikipedia

    en.wikipedia.org/wiki/Employment_Record_Book

    Employment record book. An employment record book is an official personal document recording the employment status of its owner over time. Some European countries issue such documents, others did earlier. The first employment record books are said to have been issued in German Reich in 1892 in the mining industry. [1]

  4. 2,147,483,647 - Wikipedia

    en.wikipedia.org/wiki/2,147,483,647

    The number 2,147,483,647 is the eighth Mersenne prime, equal to 2 31 − 1. It is one of only four known double Mersenne primes. [ 1 ] The primality of this number was proven by Leonhard Euler, who reported the proof in a letter to Daniel Bernoulli written in 1772. [ 2 ] Euler used trial division, improving on Pietro Cataldi 's method, so that ...

  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. Video file format - Wikipedia

    en.wikipedia.org/wiki/Video_file_format

    A video file format is a type of file format for storing digital video data on a computer system. Video is almost always stored using lossy compression to reduce the file size. A video file normally consists of a container (e.g. in the Matroska format) containing visual (video without audio) data in a video coding format (e.g. VP9 ) alongside ...

  7. Maximal and minimal elements - Wikipedia

    en.wikipedia.org/wiki/Maximal_and_minimal_elements

    A minimal element of a subset of some preordered set is defined dually as an element of that is not greater than any other element in . The notions of maximal and minimal elements are weaker than those of greatest element and least element which are also known, respectively, as maximum and minimum. The maximum of a subset of a preordered set is ...

  8. Starship flight test 4 - Wikipedia

    en.wikipedia.org/wiki/Starship_flight_test_4

    Starship flight test 4 was the fourth flight test of the SpaceX Starship launch vehicle. The prototype vehicles flown were the Starship Ship 29 upper-stage and Super Heavy Booster 11. [ 4 ][ 5 ] SpaceX performed the flight test on June 6, 2024. The main test objectives of this flight, both of which were accomplished, were for the Super Heavy ...

  9. Put Your Hands Up 4 Detroit - Wikipedia

    en.wikipedia.org/wiki/Put_Your_Hands_Up_4_Detroit

    It remained at number one for one week before being knocked out by "The Rose" by Westlife. The single went on to be the UK's 20th best-selling single of the year. [1] Outside Benelux, the song was released as "Put Your Hands Up for Detroit", with "4" replaced with "for". The song was also remixed in the UK, Germany and Spain and included verses ...