have there been any changes made between youtube and this plugin? Yesterday the plugin worked fine (displaying background video on desktops and the regular static background on mobile devices). Today, all of a sudden and with no changes made whatsoever the background video doesn't load and the background goes black :( it looks like it tries to start the video for a second and then turns black. The video reproduces without problems on youtube.
Due to this problem we upgraded the setting (WP 3.5.1. and mb.YTPlayer 1.6.2. to now Wp 3.5.2. and mbYTPlayer 1.6.3.) but the problem persists.
Any ideas what this could be??