I have a m4v video that is able to play using html5 video tag on the iPhone - but it wont play on the iPad using html5. If i go directly to the video file from the iPad it plays fine- But if I use the html5 video tag to link to it the play button wont show. Im testing using an iPad 1 and iPhone 4 - both running iOS 5. Does anyone have an idea why it wont play on the iPad?