I thought this is pretty interesting....
The state of HTML5 video
"Dear JW Player users,
For two years our JW Player team has researched and monitored the evolution of HTML5 video capabilities so that we could effectively support it. Beyond our own products, we believe that the community at large will benefit from this work. So we are now pleased to share that detailed research with the community.
Whether you are well-acquainted with HTML5, or just getting started, this new content is an indispensable resource for tracking the progress of HTML5 video.
In addition, the JW Player team will be participating in discussions with the community around HTML5 video. Visit us on Facebook to join the conversation."