Firefox 25.0.1
Windows 7 64 bit latest and greatest
Flash 11.9.900.152
I have tried everything I can think of. HTML5 videos do just fine. Flash videos do okay on Chrome. Under Firefox, sometimes the videos play okay. When they do hang, which is often, I can almost always get them going again by moving forward or back in the video and hitting pause and go, or by refreshing the page.
I have tried uninstalling/re-installing both Firefox and Flash. I set all Flash settings, local and global, to defaults.
What can I do?
P.s. Even when the Flash vids buffer up, they do so much more slowly than HTML5, and do not buffer nearly as far ahead. Flash shows many, many "dropped" in the stats. HTML5 always says 0 frames dropped.