I tried and upload a video to our "demo" (testing) instance of una ver. 13.0.0-B4 and the problem is also on that instance (installed on same server) so I believe the problem is somehow related to Ubuntu 22.04LTS (before upgrade from Ubuntu 20.04 the duration time for videos worked and was always entered to DB and shown on una page.....)

If someone can verify my thinking please, do respond.