Thanks a lot. It's fedora 28 and missed package is chromium-libs-media-freeworld from rpmfusion repo

Thanks again. Now everything works perfectly

Thanks a lot. It's fedora 28 and missed package is chromium-libs-media-freeworld from rpmfusion repo

Thanks again. Now everything works perfectly

Thanks a lot. Disabling flash-detection-through-navigator-plugins helps on some sites but only in normal mode. And for some reason in private mode video still not loading.
Also on at least one website video still not loading in opera or chromium. Although works well in firefox. URL for example: https://www.vbox7.com/play:f173131649

The site uses the following video tag:

<video id="html5player" style="" poster="//i49.vbox7.com/o/f17/f1731316490.jpg" tabindex="0" data-src="https://media34.vbox7.com/sl/bRVhkVO3FlbgxfttoUiy7g/1531083600/f1/f173131649/f173131649.mpd" src="blob:https://www.vbox7.com/93dac6fb-ae8f-444d-8c87-bc5ef943c2eb" autoplay=""></video>

( Sorry did not find any "code' tag )
Is opera able to run this kind of video tags? I mean mpd and/or blob ?

I wonder how am I intended to click "Click to enable Adobe Flash Player" on some websites. Exceptions seems doesn't work or am I intended to add every CDN networks and subdomain website utilizes ?

Thanks In advance for any help