Love for Google services and the use of browsers other than Google Chrome is a dangerous combination. It’s a proven fact. Google Earth, Chromecast are the shining examples.
Luckily, we now have a partial solution to the problem. While Google Earth is yet to make its way to other browsers, an open source Firefox extension, fx_cast has come to the rescue for those wanting to cast contents from Firefox browser to Chromecast, all thanks to Chrome Sender API. However, there is a little caveat. Don’t expect this to work if you are only installing the fx_cast extension, you will also need a bridge application on your PC so that it can handle communication with receiver end.
After you are done with the installation of both fx_cast extension and bridge application, just click on the cast button on your toolbar and your Firefox content such as YouTube, Netflix are ready for the primetime.
Now since the extension is in its infancy things will go wrong and random crashes should not surprise you. You can download the open source extension fx_cast from GitHub.