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  2. Comparison of video converters - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_video_converters

    Comparison of video converters. Video converters are computer programs that can change the storage format of digital video. They may recompress the video to another format in a process called transcoding, or may simply change the container format without changing the video format. The disadvantages of transcoding are that there is quality loss ...

  3. Transcoding - Wikipedia

    en.wikipedia.org/wiki/Transcoding

    Transcoding is the direct digital-to-digital conversion of one encoding to another, [1] such as for video data files, audio files (e.g., MP3, WAV ), or character encoding (e.g., UTF-8, ISO/IEC 8859 ). This is usually done in cases where a target device (or workflow) does not support the format or has limited storage capacity that mandates a ...

  4. Motion compensation - Wikipedia

    en.wikipedia.org/wiki/Motion_compensation

    Motion compensation in computing is an algorithmic technique used to predict a frame in a video given the previous and/or future frames by accounting for motion of the camera and/or objects in the video. It is employed in the encoding of video data for video compression, for example in the generation of MPEG-2 files.

  5. H.263 - Wikipedia

    en.wikipedia.org/wiki/H.263

    It was also used as the basis for the development of MPEG-4 Part 2. MPEG-4 Part 2 is H.263 compatible in the sense that basic "baseline" H.263 bitstreams are correctly decoded by an MPEG-4 Video decoder. The next enhanced format developed by ITU-T VCEG (in partnership with MPEG) after H.263 was the H.264 standard, also known as AVC and MPEG-4 ...

  6. Lossless compression - Wikipedia

    en.wikipedia.org/wiki/Lossless_compression

    Because N<M, every file of length N keeps its size during compression. There are 2 N such files possible. Together with F, this makes 2 N +1 files that all compress into one of the 2 N files of length N. But 2 N is smaller than 2 N +1, so by the pigeonhole principle there must be some file of length N that is simultaneously the output of the ...

  7. QuickTime File Format - Wikipedia

    en.wikipedia.org/wiki/QuickTime_File_Format

    The MPEG-4 file format specification was created on the basis of the QuickTime format specification published in 2001. The MP4 (.mp4) file format was published in 2001 as the revision of the MPEG-4 Part 1: Systems specification published in 1999 (ISO/IEC 14496-1:2001). In 2003, the first version of MP4 format was revised and replaced by MPEG-4 ...

  8. MPEG-3 - Wikipedia

    en.wikipedia.org/wiki/MPEG-3

    MPEG-3. MPEG-3 was the designation for an abandoned plan to create a group of audio and video coding standards agreed upon by the Moving Picture Experts Group (MPEG) designed to handle HDTV signals at 1080p [1] in the range of 20 to 40 megabits per second. [2] MPEG-3 was launched as an effort to address the need of an HDTV standard while work ...

  9. Run-length encoding - Wikipedia

    en.wikipedia.org/wiki/Run-length_encoding

    Run-length encoding ( RLE) is a form of lossless data compression in which runs of data (consecutive occurrences of the same data value) are stored as a single occurrence of that data value and a count of its consecutive occurrences, rather than as the original run. As an imaginary example of the concept, when encoding an image built up from ...

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