The success of many web or internet owe it to free and open technologies such as HTML, HTTP, TCP/IP, etc. Even VoIP IP Telephony succeeded largely due to open technologies and implementations. But Video always had to rely on proprietary technologies such as H.264 codec and always were restrictive in development, general usage and presentation. But that too have come to pass.
Let me introduce WebM, a community effort to develop a media format for the open web that will deliver free and open technology. WEBM Project released a developer preview of WEBM and is available for download and develop for everyone, free.
More than being free and open, WEBM project and it's technologies like VP8 Video codec, Vorbis Audio Codec are backed by industry giants like Google, Mozilla, Opera, Adobe, and many others who are also part of IP Telephony community.
The WebM Project and the the distribution of the WebM VP8 Codec SDK (WebM VP8 Encoder WebM VP8 Decoder) are available here.