Prevent downloading my videos

We have our eLearning videos on Vimeo. We are taking the responsive link from Viemo and adding it to story we can make our courses using storyline.
Then we make a SCORM package 2004 and uploaded to our LMS (Learndash).
While we are reviewing the SCORM that we uploaded, we found out that any one can download our eLearning videos (if they have a download plugin) .
The question is: How can we prevent any downloading from SCORM package videos.
This is a very URGENT request to make us decide moving forward with Storyline.