What is HTML5 Video Format | HTML5 Video/Movie Player and Usage
Adobe Flash Player is widely used to embed video on web sites such as YouTube, since many web browsers have Adobe's Flash Player pre-installed (with exceptions such as the browsers on the Apple iPhone and iPad and on Android 2.1 or less). HTML5 video is intended by its creators to become the new standard way to show video online, but has been hampered by lack of agreement as to which video formats should be supported in the video tag.
It is desirable to specify at least one video format which all user agents (browsers) should support. The ideal format should:
* Have good compression, good image quality, and low decode processor use.
* Be royalty-free.
* In addition to software decoders, a hardware video decoder should exist for the format, as many embedded processors do not have The performance to decode video.
Supported Video Formats
Although Theora is not affected by known patents, companies such as Apple and (reportedly) Nokia are concerned about unknown patents that might affect it, whose owners might be waiting for a corporation with extensive financial resources to use the format before suing. Formats like H.264 might also be subject to unknown patents in principle, but they have been deployed much more widely and so it is presumed that any patent-holders would have already sued someone. Apple has also opposed requiring Ogg format support in the HTML standard (even as a "should" requirement) on the grounds that some devices might support other formats much more easily, and that HTML has historically not required particular formats for anything.
Some web developers criticized the removal of the Ogg formats from the specification. A follow-up discussion also occurred on the W3C questions and answers blog. H.264/MPEG-4 AVC is widely used, and has good speed, compression, hardware decoders, and video quality, but is covered by patents. Except in particular cases, users of H.264 have to pay licensing fees to the MPEG LA, a group of patent-holders including Microsoft and Apple. As a result, it has not been considered as a required default codec. Google's acquisition of On2 resulted in the WebM Project, a royalty-free, open source release of VP8, in a Matroska container with Vorbis audio. It is supported by Google Chrome, Opera Browser and Mozilla Firefox.
HTML 5 Video Usage
As of April 2010, in the wake of Apple iPad launch, a number of high-profile sites have started to serve H.264 HTML5 video instead of Flash for user-agents identifying as iPad. As of May 2010, HTML5 video is not currently as widespread as Flash videos, though recent rollouts of experimental HTML5-based video players from DailyMotion (using Ogg Theora and Vorbis format), YouTube (using the H.264 and WebM formats) and Vimeo (using the H.264 format) suggest that interest in adopting HTML5 video is increasing.
On 2011 Jan 11, Google's Chromium Project announced on their blog that support for closed codecs (particularly H.264) would be removed from future releases of Chrome. The Chromium announcement specifically mentioned that this was an effort to increase the use of license-free HTML5, and drive web-wide adoption of the open-source codecs VP8 and Theora.
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YouTube - YouTube is a video-sharing website on which users can upload, share, and view videos.
BD+ - The component of the Blu-ray Disc Digital Rights Management system
Rom Mark - Anti-copy Protection Measure for Blu-ray
BD-Live - A New Online Feature on Blu-ray Disc
Related External Source
HTML5 video - is an element introduced for the purpose of playing videos or movies.
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