Seems to work on Yahoo Finance where Firefox itself and other add-ons fail. You have to click the "Play Video" in the upper left of each video before playing. This appears to unlock the video to interact with as normal. I tested with cnet.com, they have videos that pop up as you scroll down the page. The "Play Video" icon did not show up, so every time I hit play, the video will play for about half a second then pause ... so it was never "unlocked". I would also like to see some settings to run only on blacklisted sites or all but whitelisted sights.

It does work but also prevents some videos from playing entirely. Had to uninstall. Also, the permissions are way too intrusive and any future development appears abandoned.

While I very much appreciate what this developer tried to do, this addon often strangles my browser, and seems to be unmaintained.

Le fonctionne pas avec Dailymotion.