Browsers have their auto-execute content tag with the <video>
tag using mobile. IOS, for example, does not allow autoplay
( see here official Apple documentation ).
Regarding Android, Firefox accepts autoplay
, quiet. Chrome will only auto-execute the video if it has the two attributes autoplay muted
( muted
means no audio ) and if Data Saver is disabled and if " Site Settings> Media " is enabled in the browser settings "AutoPlay".
I believe that in the case of iOS (which does not allow) and in the case of Chrome (allows within the above criteria), either to avoid consumption of cellular network data without a prior action of the user.