I just migrated videos from Office Mix to Stream today per the notification from Microsoft. For most of my videos, when I click on them to play in Stream, the narration is starting right away but the slides are not displaying and advancing properly in line with the narration. I am also trying to play demo videos in Stream. They start and then freeze part way into them. Is there an issue with Stream not functioning fully at this time?
It sounds like you are having issues with both the your own videos that came from Mix and from the help videos we show when you log into Stream for the first time. If that's the case it almost seems as if there was something not quite right with your network connection or something. Have you tried again or from a different internet connection?
If you are still having this issue we'd have to get more information from you and see if we can troubleshoot. So sorry you ran into problems.