A few lines added to CRunWebView.m manage to simulate a user touch on the WebView's first button once it's loaded => video autoplay works on iOS
I attach the modified source file for your information. The 2 code additions are between comments about "code inserted for VIDEO AUTOPLAY" 1/2 and 2/2.
Jjsonick, it would be really nice if you could modify your extension so that this behaviour can be switched on/off at runtime with an object action. Really nice because it would allow us to use some WebView objects for video autoplay, and some other ones for any other purposes. I would try and do it myself if I had the extension development skill.
What do you think?