WOO! HOO! That worked beautifully! I restored my computer to 8/26 and now I can see the embedded videos just fine. I don't know what bells and whistles the new Adobe Flash Player has but I am satisfied with the current version. If it ain't broke, don't fix it.
Since you ‘restored’ just be sure to NOT install the latest Flash if/when you reboot.
If you have auto-install for flash, you may be revisited with this problem.
Check these ‘help’ files regarding auto-update:
Configure auto-update notification | Flash Player
http://helpx.adobe.com/flash-player/kb/administration-configure-auto-update-notification.html
How to disable auto-update notification in Flash Player
http://kb2.adobe.com/cps/713/a7138026.html
Does that mean you can watch the convention all over again?