The videos on that page use JavaScript and scrolling to control when a video plays. The setting you are referring to probably controls autoplay options set from HTML. I doubt any kind of setting in Firefox would disable JavaScript controlling videos as that would break custom controls.
> I doubt any kind of setting in Firefox would disable JavaScript controlling videos as that would break custom controls.
True, but I'm not sure that's a bad thing. I usually prefer the default controls on HTML5 video players to whatever the site wants to cook up. Somewhat similar to scroll bars and form elements. Native, please.
