@samotxave said in Any video on the ufcfightpass.com site stopped playing:
What is the reason?
The site probably doesn't officially support Opera. So, when the site detects a browser that's not officially supported, it probably gives that browser crappy code. Setting the user-agent to what Chrome uses tricks the site's browser detection.
You can modify the properties in Opera's shortcuts to change the launcher.exe command to pass the --user-agent setting to Opera if you want.
Or, you can install https://addons.opera.com/en/extensions/details/user-agent-switcher-5/, pin its icon to the address bar, click the icon, choose edit (the pencil icon), and set your user agent string there. That way, you don't have to modify Opera's shortcuts. (The extension's default-provide strings are old, which is why you use the pencil icon to manually set a newer one.)