No, I mean all video formats fail to play; whether local files, or off streaming services, whether AVI, MP4, MKV (ok, it's a container), MPG, or HTML5 off web sites, including those we store on our Google Drive.
Also, as mentioned in my OP, it's Windows and 'nix. I worked through the widevine stuff awhile back. It has no effect.
regarding Opera:components, I already have
Widevine Content Decryption Module - Version: 4.10.2449.0
Status - Component not updated
In any case, having to jump through that many hoops to play videos, hey, installing Firefox or Chrome seems a lot less error prone and less stressful.