Problems with AI2's Web Viewer browser and embedded videos

I would like to get the play of an embedded video from youtube automatically when I open the WebViewer using the following code (copied on youtube), PERFECTLY WORKING if I try to view it with google chrome, while in my app with WebViewer it DOES NOT work! the video is displayed but does not have automatic play!
how can i solve? why does the WebViewer have these limits?

?controls=0&autoplay=1&mute=1&amp;start=0" frameborder="0"  allowfullscreen></iframe>

Try with

is it possible to download in AI 2 other web browsers ?? as if they were extensions? did I get it right? what extension is the equivalent of google chrome ?? sorry but it is a new thing for me and I need to be guided in detail ...
thank you

You can try this code, that is, from the app open the device browser. Do the example...

Download original video and use them in video player. Or maybe there's Youtube extension to play Youtube videos.