Attribution required? CC BY-SA 4.0

I want to purchase a mocap file for using in a personal demo. End result is a video on vimeo.
It is licensed under
https://creativecommons.org/licenses/by-sa/4.0/

So my question is
Do I need to provide attribution along with the video, and if so how should this be done? A separate link or a title credit in the video itself?
Or, since it is just a personal demo, does it fall under 'fair use' in the public domain with no attribution required?

Thanks again!