johndyer/mediaelement — Issue #344: Responsive video (Flash fallback) always autoplays in Firefox
Author: ry5n
Created: 2012-01-02 03:05:00+00:00
State: open

Description: in Firefox ( 9.0.1 Mac and 3.6 Mac), H.264 video played through the Flash fallback always begins playing immediately, regardless of the 'autoplay' attribute in markup or flashvars passed in. This only occurs when attempting to make the video responsive by setting the width and height attributes to 100% on the video tag (or setting inline CSS to "width: 100%; height: 100%;" which is the official method). The problem does not occur using the native player (when an Ogg or WebM video is supplied).