Interactive Video True Full Screen Mode - hiding the toolbar
An option to hide the toolbar during playback would provide a more similar user experience to other video platforms like youtube etc. and provide a true full screen, allowing the video to take up all the space of the screen where possible.
This is especially useful for many people that will use h5p just to insert a video without any or just optional interactions ie. bookmarks.
The behaviour would be ideal for the option to hide/unhide with any mouse movements if that's possible,
otherwise, a workaround for this option could be just to show the fullscreen icon in the right corner (and perhaps one for showing/hiding the toolbar)
That way the user can decide when to access bookmarks or other interaction (which can still be promoted in the beginning with bookmarks open or other messages to let the user know about their existence / how to access them).