This bug looks to be resolved as of iOS 9.
The video plays fine on the desktop evergreen browsers, and in stand alone mode on Android devices.
It even plays nice on the iOS8 safari, but once a user goes and adds it to their home screen, the video no longer plays.
I put up an example here http://bugs.readingplus.com/ios8-video-test/.
If you using iOS8 you can play the video, add the url to your home screen and load it up. You will get the controls, but once you touch play all you get is the first frame.
I put the source of the page on Github, or you can just go to the page and view the source.
Am I missing something, is my markup fubared, is this just a bug, has anyone found a work around?
As of iOS 8.3 the issue is partially resolved. I have verified that the video, in the example, now plays when launched from the "Add to Home Screen" link.
The remaining issue is the audio, it is not being rendered/played.
Looks like iOS 8.3 fixes this issue. I have a standalone web app that uses an audio element, and it's working as expected now. FINALLY!