@rmstock -
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.

Cheers

A couple of years back I raised the issue that in my experience Opera on Linux & Windows fails to play video streams.

You can assume latest OS & Opera versions and recent hardware.

I didn't find a cure (The fanbois with "works for me" comments were no help either).

Anyway, I looked in again today; Windows 10, Windows 11, Ubuntu 20.04, Linux Mint etc, Opera still won't play video streams, although the error message has changed:
Vimeo:
undefined Player error
The player is having trouble. We’ll have it back up and running as soon as possible.

@leocg - they are installed; my main work PC is running Ubuntu Studio. If it's missing a codec it hasn't been invented yet,

Cheers

@leocg - they are installed; my main work PC is running Ubuntu Studio. If it's missing a codec it hasn't been invented yet,

Cheers

@rmstock -
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.

Cheers

A couple of years back I raised the issue that in my experience Opera on Linux & Windows fails to play video streams.

You can assume latest OS & Opera versions and recent hardware.

I didn't find a cure (The fanbois with "works for me" comments were no help either).

Anyway, I looked in again today; Windows 10, Windows 11, Ubuntu 20.04, Linux Mint etc, Opera still won't play video streams, although the error message has changed:
Vimeo:
undefined Player error
The player is having trouble. We’ll have it back up and running as soon as possible.

@acadianman et al
Just started to experience similar issues here - Opera 73.0.3856.284
Operating System: Linux Mint 20
Kernel: Linux 5.4.0-58-generic
Architecture: x86-64

I've pretty much exhausted everything I could find on the web. Nothing has cured it.

Joined this mob mainly to sync browser between Linux, Windoze and android devices

After activating SYNC I see all stored passwords are corrupted.

Thanks a lot, guys!