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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 .
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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]
Note that a video file normally contains both video and audio content, each encoded in its own format. The browser has to support both the video and audio formats. See HTML audio for a table of which audio formats are supported by each browser. The video format can be specified by MIME type in HTML (see example ).
A media type consists of a type and a subtype, which is further structured into a tree. A media type can optionally define a suffix and parameters : mime-type = type "/" [tree "."] subtype ["+" suffix]* [";" parameter]; As an example, an HTML file might be designated text/html; charset=UTF-8. In this example, text is the type, html is the ...
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 ...
Replacing YouTube links: Most link removals are uncontested, and the removed links are not replaced, but somewhere between 1% and 10% of links are replaced, often with discussion of why the link was valuable/not copyvio/etc. That discussion sometimes occurs on the article talk page, and sometimes occurs on the user talk page of the editor who ...
H:WIKILINK. A wikilink (or internal link) is a link from one page to another page within the English Wikipedia, or, more generally, within the same Wikipedia (e.g. within the French Wikipedia), in other words: within the same domain, or, even more generally, within the same Wikimedia project (e.g. within Wiktionary ).