I'm looking for the best way to switch from flv to mp4 and include a player (players) that can be viewed by all devices in a single post. Seems the H.264 mp4s are just fine, but getting browsers and Apple devices to use the correct player a different problem, particularly with Wordpress caching.
My first attempt was to use two different players in a single post. With a description= line in the FLV Player the Apple devices like the iPad pretty much ignore the code and don't gunk up a post with a big black box. The same is not true for Firefox and the Mediaelement.js ... or Chrome loading up both players.
Any options for Wordpress that works across platforms?