Videos in publications works better without a play bar and the standard vimeo interface. Learn the best way to use video in AVIOU here.
Video in AVIOU can be uploaded with YouTube, Vimeo and Mp4.
If you are having trouble with your videos or your GIFs in Vimeo, the problem has most likely got something to do with your Vimeo subscription. Please check your Vimeo account or billing information for sudden changes, which could have something to do with the issue you have in your catalogue
First go to the settings of your video.
Then click "Embed" in the left side menu and disable the following controls/actions:
Remember to save your changes. When done your video will play without any overlays and is ready to be embedded into your AVIOU publication.