I have just recently purchased the Revolution Slider for my Flexi Theme Template, and when I insert a Video using the HTML5 option into the Slider, it shows the outline of the Video, but does not play on my MAC with OS X Yosemite in the Firefox Browser. How do I correct this? - For example: -http://www.irender.co.za/adobe/creative-cloud-for-teams/
Chances are you need to add a “webm” or “ogv” alternative for the video. Search Google for “Miro Video Convertor” as that’s a free program you can use for this.
I have now pretty much tried every possible conversion option, from OGV to WebM, and none of them work. Any other suggestions will be much appreciated.