Agree, don't know why Opera lags so in this respect in not keeping up with chromium's releases. Firefox and Chrome have no problems here. Also have Vivaldi which as of now also does not play videos, guess they lag also.
Recall there was a fix in the past for this issue where code was given that allowed you to remove; 'chromium-codecs-ffmpeg 73' and reinstall 'chromium-codecs-ffmpeg 71' for a quick fix until Opera fixed this issue. Is that option still around and will it still work now?