On Thu, 16 Jul 2015 12:01:09 -0500, Francis Gerund wrote: >Just noticed in Firefox 39.0-1 preferences an entry "Flash video". Where exactly is this entry? I heard that H.264 from Cisco phones home, resp. auto-updates, so you might want to edit about:config to use gstreamer H.264. Perhaps this automatically is done by installing the optional dependencies? JFTR I didn't change something regarding H.264 and I kept several other phone home crap of a default Firefox. I guess I only disabled "Block reported..." by the preferences. However, if I right click on a YouTube video there is "About the HTML5 player": https://www.youtube.com/html5