Version: 60.0.3255.56 Opera is up to date, and installed on Linux mint Cinnamon 19.1 which is also up-to-date. Synaptic package manager shows Chromium codecs ffmpeg-extra 73.0.3683.86 -0 ubuntu free ffmpeg codecs for the chromium browser "installed." Opera plays all the usual video and sound, such as found on Fox News, however, vpn needed to be turned off for this to happen. Only issue is: Web site "HOOPLA" via our local library offers free viewing of movies. These movies will not play on Opera. However, these movies will play via Firefox and Chromium.
Thanks for all advice on this matter.