Prezi Mobile (iPad) wont play MP4 videos



I have two presentations tomorrow (each of them contains two MP4 Video files). On my PC they play just fine when presenting but on my iPad only the thumbnail is shown on the mirrored screen. On my iPad itself the video plays. It seems like Prezi just does not send the video signal out.
Is there any way I can fix this?


Hello, @Hendryk_Linn. In order for us to be able to assist you, we would like to ask for a link to the presentation. Thank you.