I was previously using Ubuntu 16.04 LTE but upgraded to 17.10. Firefox also upgrade but I lost the HTML5 function on two (and possibly more) websites.
Dailymotion, Twitch and Facebook videos now do not play in HTML5 format despite previously working on Ubuntu 16.04 LTE.
Any help with this is appreciated.
I do not wish to install flash on my Ubuntu machine.
EDIT: I reinstalled my OS again, and upgraded to 17.10 and now I have the same issue. It seems like not all html5 codecs work, despite my hardware supporting all html5 versions.
Unsure if it will correct itself again but it's clearly an issue with Ubuntu 17.10 and Firefox
I installed Ubuntu Restricted Extras (
sudo apt-get install ubuntu-restricted-extras). This said that it had fixed the h264 issues but I still get playback issues.
This question should not be closed.
~/.cache/and ~/.config/, as well rename or move the ~/.mozilla folder and check if it still occurs with a fresh new profile. (if not then you can move your old files back if you so wish). Please tell us your results.