I don't see a link to a video. Perhaps it is necessary to log in or register?

Do you see this on the page?

If i disable Ublock on the page, the video appears

No. I see a page with references to logging in or registering.

I'm not using content blocking extensions and see two video players and adjacent to the upper video a scrollable panel that shows all available videos and their duration and where you can select a video (Now Playing).

If you have extensions blocking content then they usually have a badge attached that shows how many items are blocked and you can click its icon for more detail.

If you have extensions blocking content then they usually have a badge attached that shows how many items are blocked and you can click its icon for more detail.

There is likely more than one file blocked that is causing this issue as this involves JavaScript and images and videos. You can right-click this area and check what link(s) this is about. JPG Images are coming from video-meta.humix.com and videos from streaming.humix.com. It looks that the JavaScript code is inline in the main HTML file and some from www.ezojs.com if I search for humix in the Debugger.

• https://firefox-source-docs.mozilla.org/devtools-user/debugger/

The only video content on this page is ads. It is blocked by uBlock Origin with default settings.