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You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.
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]
Links to user-submitted video sites must abide by Wikipedia's External links guidelines (see Restrictions on linking and Links normally to be avoided ). For example: Videos often contain less information than alternative websites or the Wikipedia article itself. This concern limits use of many videos according to ELNO#1 .
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 ...
Shape of You " became the second video to reach four billion views in January 2019, [ 27 ] followed by "See You Again" in February 2019. [ 25 ] ". Baby Shark Dance " became the second video to reach five billion views in April 2020, [ 62 ] followed by "Shape of You" in October 2020.
Time period. Key developments in online video web sight. 1974–1992. Development of practical video coding standards. The development of the discrete cosine transform (DCT) lossy compression method leads to the first practical video formats, H.261 and MPEG, initially used for online video conferencing . 1993–2004.
Performance-type videos are recordings of individuals performing an extended series of actions. Examples may include a musician playing a song or the activity of a wild animal. Videos of this type will usually only consist of one shot up to several minutes long. Stabilization is especially important for performance-type videos.
Creation and usage of media files. Images, audio and video files must be uploaded into Wikipedia using the "Upload file" link on the left-hand navigation bar. Only logged in users can upload files. Once a file is uploaded, other pages can include or link to the file. Uploaded files are given the "File:" prefix by the system, and each one has an ...