Unable to change the resolution for videos hosted in Youtube. I've discovered by accident that changing the resolution of the source video in Youtube and refreshing the page for IV changes the resolution for IV as well. I've uploaded a screencast here https://www.dropbox.com/s/9yxqzz19hdsxxvf/IV%20resolution%20issue%20for%20Youtube%20vids.webm?dl=0
Issue is reported here: https://h5p.org/comment/20963#comment-20963
Test content: https://h5p.org/node/255136
Youtube link: https://www.youtube.com/watch?v=bl1zq8EFQDQ
Content created in H5P.org
Issue can be seen in Safari, Firefox and Chrome.