For years I've been jealous of folks with iOS devices who could just send their phone screens to their Apple TV devices. It seems like the Android screen-mirroring protocols never work right for me. My Sony Xperia has multiple types of screen mirroring, and none of them seem to work on my smart TVs or Roku devices.

FlashVideoReplacer is a Firefox add-on that strips out the Flash video on sites such as YouTube, automatically replacing it with a standard video file that is re-embedded on the page. In a nutshell, this means that a native player is used instead of the embedded Flash player.