On Tue, Jul 7, 2009 at 5:50 AM, Kornel<kor...@geekhood.net> wrote: > Similarly, authors publishing <video> MUST put at least one source in Theora > or H.264
This isn't future-proof. It's also not reasonable if you happen to know that all of your clients' browsers support some third format (e.g. on an intranet), or if you don't care about those who don't for some reason. I don't think it adds anything. > SHOULD publish both. HTML 5 should not recommend that all sites SHOULD use a patent-encumbered format, any more than it should recommend that they SHOULD use Flash for fallback (which is what's really needed for compatibility in practice).