Content creation

I have just started using H5P editor, uploaded sample video, added some interactions. Now I wonder if you can do direct linking between two H5P videos.

So, for example I've got two videos. On Video A I place link, which will point to Video B. On Video B there is "Back" button. Now, I've done it with links interaction, but it have some drawbacks - everytime the user clicks on link it is opened in new tab, and loaded video is not autoplayed. I'm trying to change only player's video source and play it from beggining.

I am attempting to create an interactive video on my desktop using Chrome browser and a YouTube video.  I select the Interactive Video from the H5P hub and add the video link and then save.  I get the error message "You must choose an H5P content type or upload an H5P file".  I tried it in Safari with the same results.  It doesn't seem to recognise that a content type was chosen or there's something specifically wrong with the Interactive Video content type.  (see attached images).  Appreciate your assistance.

Kind regards,

Jamie

1. Is it possible to change the background colour on a slide in Course Presentation?

2. If I want an image to cover the whole slide, what dimensions do I need?

Thanks!