HTML 5 progresses despite challenges

Development of HTML 5, the highly touted upgrade to the language of the Web, is progressing but still faces obstacles, including lack of a standard video codec, said an official of the World Wide Web Consortium at a gathering on Tuesday.

Featuring video capabilities and support for offline applications and the SVG (Scalable Vector Graphics) specification, HTML 5 is set to move to a candidate recommendation phase in by the end of 2010. That phase would last two years before a final adoption could occur, said Philippe Le Hegaret, W3C interaction domain leader, during a press briefing at the W3C Technical Plenary/Advisory Committee meeting in Santa Clara, Calif. W3C officials also provided updates on efforts in the mobile widget and IPv6 adoption spaces.

[ HTML 5 could be a killer of both Flash and Silverlight. ]

"[HTML 5 presents] the next generation of being able to interact or do more with your Web applications," Le Hegaret said.  HTML 5 would be supported within browsers and by application developers.

Challenges, however, include the lack of a video codec in HTML 5.

"The underlying issue is finding a video format which is royalty-free," said Le Hegaret. "So far, we haven't been able to provide one video format that can satisfy everyone."

MPEG-4 and Ogg have not met the royalty-free criteria, Le Hegaret explained. Fallback options could include having a developer, for example, define a page to work in the Safari and Firefox browsers and then provide two video formats, he said.

HTML 5's multimedia capabilities could give developers less reason to deploy proprietary technologies like Microsoft Silverlight or Adobe Flash, Le Hegaret acknowledged. But Le Hegaret said those technologies would remain a step ahead of HTML 5 in technical development.

Work also is being done in the accessibility space, with HTML 5 to link to the WAI-ARIA (Web Accessibility Initiative Accessible Rich Internet Applications) suite, to make Web content accessible to people with disabilities.

Le Hegaret also touted SVG, which provides a language for describing two-dimensional graphics and graphical applications in XML. "What we're going to see is Web applications becoming much nicer with the arrival of SVG on the Web," he said.

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