Because some visitors and publishers choose not to take part in the use of proprietary software, web content has been made available through open standards in order to reach these users.
As multimedia is already mainstream on the web through proprietary data formats (such as Windows Media Video and MP4) and browser plugins (such as Adobe Flash Player), developers[who?]
[...] We don't want to contaminate
[13] Among them, Nokia's paper[14] states that "a W3C-led standardization of a 'free' codec, or the active endorsement of proprietary technology such as Ogg [...] by W3C, is, in our opinion, not helpful".
Apple Inc., a member of the MPEG LA, has also opposed the inclusion of Ogg formats in the HTML standard on the grounds that H.264 performs better and is already more widely supported, citing patents on their codec's efficiency and the lack of precedents of "Placing requirements on format support", even at the "SHOULD" level, in HTML specifications.
[15] On December 10, 2007, the HTML 5 specification was updated,[16] replacing the reference to Theora and Vorbis with a placeholder:[17] It would be helpful for interoperability if all browsers could support the same codecs.