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| Video alternative to GIF ： ウィキペディア英語版 |
Video alternative to GIF
Several replacements for the Graphics Interchange Format (GIF) have been proposed — usually HTML5 video — for the display of short, silent, looping, moving picture files on the web.
Videos resolve many issues that GIFs present through common usage on the web. These include drastically smaller file sizes, the ability to surpass the 8-bit color restriction, and better frame-handling and compression through codecs. Virtually universal support for the GIF format in web browsers and a lack of official support for video in the HTML standard caused GIF to rise to prominence for the purpose of displaying short video-like files on the web. The introduction of the video element in the HTML5 specification, which – along with the H.264 and WebM video file formats – allowed for broader support and easier implementation of videos, making video alternatives for GIFs more practical.
== Notable uses ==
The practice gained prominence in 2013, primarily through the websites Mediacrush and Gfycat – websites that allowed users to upload GIFs to be converted to videos that are displayed in the browser similarly to regular image files.
In April 2014, 4chan added support for silent WebM videos that are under 3 MB in size and 2 minutes in length,〔(【引用サイトリンク】url=http://blog.4chan.org/post/81896300203/webm-support-on-4chan )〕 and in October, Imgur started converting any .gif files uploaded to the site to video and giving them the appearance of actual files with a .gifv extension, allowing them to be "hotlinked".
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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