Video plugin manual article
On Safari for iOS and Chrome for Android, video playback cannot begin unless triggered by a user input event.
The application you make out of Construct 2 is actually a browser "executing" your application.
So no, no way around that I'm aware of.
As for fullscreen, no idea why this is happening. Perhaps it is due to the fact that
[quote:1riwzw5g]Safari on iOS does not currently support rendering video inside the game canvas itself. To work around this, the Video plugin creates a video element floating above the game, similar to a form control. This ensures the video can appear, but prevents other objects being displayed on top of it.
Or perhaps it is due to the resolution of the video in regards to the actual resolution of the device.