allow="autoplay" not running in some Chrome versions and it affects to Chromecast users

[sergiambel]

Chromecast and Chromecast built-in devices uses Chrome to open the receiver files. In some devices it isn't possible to play videos because Chrome requires a user click and, obviously, it's impossible.

The videos only play if we set in muted mode and pauses when we try to unmute.

The allow="autoplay;" attribute for iframe tag doesn't run in all Chromecast. It looks as depending chromecast type it uses different Chrome versions.