$ sudo apt-get -reinstall install flashplugin-installer When having issues after an automatic update. Just follow the instructions in the wizard and you should be fine.įor some more detailed guide on installing Flash using Flash Aid, check out fossfreedom's answer: Install Flash Aid, restart Firefox, and click the Flash button at the upper right corner of Firefox's window. I don't know for sure if this will work for you as well, but it worked for me. For example, YouTube and VKontakte (a Facebook clone popuar in Russia) use different codecs for their HTML5 videos, which means that in Ubuntu 12.04 HTML5 video playback at VK.com works in Chromium, but not in Firefox (and in future, these browsers might swap their roles). Whether your browser and the version you are using will support the HTML5 playback of a video on a site that provides such an option (like YouTube or VKontakte) will depend on the codec chosen by the site owners. There is a trick for the cases when there appears to be no HTML5 option available on YouTube: use the 'embedded' variant.įor example: appears to be not watchable in HTML5, but plays in HTML5!

You can also just add &html5=True behind each video URL. Enable the HTML5 playerįor Youtube this can be done by loggin in, going to and enabling it there.

Firefox flash plugin is it safe