It seems there are some issues with YouTube videos if you use the add-on ViewTube. I was able to solve it with the following user agent:
Code: Select all
Mozilla/5.0 (iPad; CPU OS 10_2_1 like Mac OS X) AppleWebKit/602.4.6 (KHTML, like Gecko) Version/10.0 Mobile/14D27 Safari/602.1
You can configure the user agent with
about:config -
Search: useragent.override.youtube.com and set the value to
Mozilla/5.0 (iPad; CPU OS 10_2_1 like Mac OS X) AppleWebKit/602.4.6 (KHTML, like Gecko) Version/10.0 Mobile/14D27 Safari/602.1.
After that YouTube uses the mobile version of their site (
https://m.youtube.com) and this website works with the add-on ViewTube.