Video - black screen
Since the update to FireFox 50.0, I have had video problems.
While YouTube runs fine, other sites do not.
On the following page, only Video TWO will play: http://www.floracopeia.com/education/pharmacy-of-flowers-essential-oil-home-study-course.html
On this page, it says "Video format or MIME type is not supported": https://www.breathingcenter.com/Breathing-Test
Wšě wotmołwy (3)
As a test, disable your flash and ad blockers.
Done, but no joy.
FYI, I then went so far as to uninstall both and tried again. Still no joy.
If you have problems with current Shockwave Flash plugin versions then check this:
- see if there are updates for your graphics drivers
https://support.mozilla.org/kb/upgrade-graphics-drivers-use-hardware-acceleration
- disable protected mode in the Flash plugin (Flash 11.3+ on Windows Vista and later)
https://forums.adobe.com/message/4468493#TemporaryWorkaround
- disable hardware acceleration in the Flash plugin
https://forums.adobe.com/thread/891337 See also: