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1. Google will be releasing VP8 under an open source and royalty-free basis. VP8 is a high-quality video codec that Google acquired when they purchased the company On2. The VP8 codec represents a vast improvement in quality-per-bit over Theora and is comparable in quality to H.264. 2. The VP8 codec will be combined with the Vorbis audio codec and a subset of the Matroska container format to build a new standard for Open Video on the web called WebM. You can find out more about the project at its new site: http://www.webmproject.org/. 3. We will include support for WebM in Firefox. You can get super-early WebM builds of Firefox 4 pre-alpha today. WebM will also be included in Google Chrome and Opera. 4. Every video on YouTube will be transcoded into WebM. They have about 1.2 million videos available today and will be working through their back catalog over time. But they have committed to supporting everything. 5. This is something that is supported by many partners, not just Google and others. Content providers like Brightcove have signed up to support WebM as part of a full HTML5 video solution. Hardware companies, encoding providers and other parts of the video stack are all part of the list of companies backing WebM. Even Adobe will be supporting WebM in Flash. Firefox, with its market share and principled leadership and YouTube, with its video reach are the most important partners in this solution, but we are only a small part of the larger ecosystem of video.

Because HTML 4.0 essentially was a "frozen" version, the specific mechanism for displaying content has been very much format dependent (e.g., Apple QuickTime Movies and Flash video) and usually relies upon tags with varying parameters for passing the relevant information to the server. As a result, video and audio embedding on web pages has become something of a black art . Its perhaps not surprising then that the <audio> and <video> tags were among the first features to be added to the HTML 5 specification, and these seem to be the first elements of the HTML 5 specification that browser vendors implemented. These particular elements are intended to enable the browser to work with both types of media in an easy-to-use manner. An included support API gives users finer-grained control.

Theoretically, the <video> and <audio> elements should be able to handle most of the codecs currently in use. In practice, however, the browsers that do currently support these elements do so only for the open source Ogg Vorbis and Theora standards.