I've created a web app (using Sencha Touch, but that's not important) which I'm trying to get offline. It's a slideshow with images and a video. When online, it plays an mp4 video using the tag in HTML . I can take it offline using a cache manifest file, which works fine for all other content, but my video won't play when offline.
I've used the "add to home screen" button to create a web app icon on the home screen.