Hi there. I'm running Opera 75.0.3969.93 on Windows 10 Home Edition (installed recent updates today).
Until tonight, I've been able to download noncommercial videos from Youtube to my laptop to watch when I don't have an internet connection. Below the video, inside the red circle in the screenshot here, a number used to appear showing the resolution at which the video would download. Clicking on that number would start the download. Tonight I noticed I couldn't hear audio on Youtube videos in Opera, though my laptop's audio passed a sound check just fine. So I created a new profile folder. After that I could hear audio, but no longer could download videos because the clickable number does not appear. What could the problem be? Are we still able to download videos that don't infringe copyrights?