The WebM Community Cross-License (CCL) initiative enables the web community to further support the WebM Project. Google, Matroska and the Xiph.Org Foundation make the various components of WebM openly available on royalty-free terms. By joining the CCL, member organizations likewise agree to license patents they may have that are essential to WebM technologies to other members of the CCL.

CCL members are joining this effort because they realize that the entire web ecosystem — users, developers, publishers, and device makers — benefit from a high-quality, community developed, open-source media format. We look forward to working with CCL members and the web standards community to advance WebM's role in HTML5 video.