Opera updated and video playback got bad again so I installed :

chromium-codecs-ffmpeg-extra_99.0.4844.84-0ubuntu0.18.04.1_amd64

But no luck

My Opera Version : 86.0.4363.23

@myswtest I am now using Opera developer version because regular Opera is unusable

@linuc it worked, thanks!

newly released opera version :111.0.5168.25

solved my problem.

newly released opera version :111.0.5168.25

solved my problem.

@sorenfeodor yes, a new version and a new video problem for opera, such that no other browser has.

@myswtest I am now using Opera developer version because regular Opera is unusable

@valdineidossantos Same problem here, we need an urgent update now. It is not usable like this.

The previous update made using screenshot utility crash the browser and this newest one made visiting pages crash the browser.

Opera team is drunk or what?

@leocg it was working before the upgrade so I thought they would not undo that setting without my consent, so would they? Yes!

@exoplanet I solved it by visiting easy setup (theme settings) the dark mode was disabled there even though in the general settings it was on.

I use Linux Mint 21.3 Cinnamon. After the last update Opera's dark mode for web pages is broken and I'm facing whiteness everywhere. I uploaded to show that my setting is correct and a web page is not dark. Under Opera Settings dark mode is on also.

@linuc it worked, thanks!

Opera updated and video playback got bad again so I installed :

chromium-codecs-ffmpeg-extra_99.0.4844.84-0ubuntu0.18.04.1_amd64

But no luck

My Opera Version : 86.0.4363.23

@niepiekm I downloaded, installed the package you just linked and ran hold command too. Now my problem is solved, thanks.