Bugs in content types

Hello forum-users. We´ve a problem with the element "interactive video" by H5P. We want to use our video production platform by the hanover university and so we tried to embed the URL of our video. In step 1 you´ll find a detailed description of the problem. After saving the video there isn´t any content but it says "video format not supported." at the video screen. Does anybody know what to do?

Hello forum-users. We´ve a problem with the element "interactive video" by H5P. We want to use our video production platform by the hanover university and so we tried to embed the URL of our video. In step 1 you´ll find a detailed description of the problem. After saving the video there isn´t any content but it says "video format not supported." at the video screen. Does anybody know what to do?

I've been making a tutorial using the branching scenarios and interactive videos and I've run into a few problems.  Maybe some of you can shed some light on it for me.

I've pretty much completed it and when I was previewing the course, I would intermittently get a screen that stated either "video not supported" or "unable to decode media."  If I refreshed the browser, the video would work and then maybe a different video would state the error. There was no rhyme or reason that I could figure out.