Honestly, PDC isn't a show to win over Linux devs. It's really geared to developers using MS tools today. For example, there's virtually no, ".NET from 0 to 60" or "An introduction to ASP.NET MVC".
I think you underestimate the sophistication of non-Windows developers. I am pretty sure I can understand a talk on some specific aspects of ASP.NET MVC or the Windows 8 new shining filesystem. And I am not the smartest guy on this block.
That said, being it mostly video (I assume), there is very little reason not to show it through a standard video tag. Heck... Even TVs can handle that nowadays.
That said, being it mostly video (I assume), there is very little reason not to show it through a standard video tag. Heck... Even TVs can handle that nowadays.