We found this project posted 6 months ago. It doesn't seem that anyone was able to do it or we would Have heard about it. if anyone has we wouldd like to know.
Their project: We have a video with an alpha channel on it that, using Flash, we've made transparent for a web site - it's essentially a video spokesperson who is talking about items on the page.
We want to have this same effect for iOS devices - this rules out Flash, of course. What we need is to have the video display in HTML5 *with the transparency*.
I've attached an alpha channel .flv video to this project - feel free to use it as you will. I can provide this video in essentially any format you might need - just let me know and I will get it to you.
The ideal return from this project would be an HTML page demonstrating the transparency along with all needed files (.ogg, .css, .js, whatever).