MeFeedia released some interesting research this week, reporting that the universe of online video it indexes (30 million videos at 30,000 sites), shows the percentage of video that is HTML5 compatible is now up to 63%. The key HTML5-compatible formats are H.264, WebM and Ogg. Video formats were already a confusing terrain before Google jumped into the mix by acquiring On2 Technologies and open-sourcing its VP8 codec as WebM. Then, earlier this year it announced that its Chrome browser would drop support of H.264, in favor of WebM. Meanwhile, the iPad, which doesn't support Flash has sold 15 million units in the past year, putting even more pressure on content developers to work outside of Flash. The 63% figure, up from 10% a year earlier, suggests that is indeed happening.