I have an Export for Web video on a site i"m developing. It works fine in all computer browsers and on the iPad, but comes up with a play button with a slash through it on the iPhone. Here is the page:

http://harrisdiamant.com/about.html

There is a reference movie that selects which exported video is sent to the proper device, in the case of the iPhone it is a .m4v

I tried on Apple's QT forum but got no advice there. Does anyone have an answer to this? It would be appreciated. Thanks ~Jeff