To prevent Zoom recording videos from being downloaded by your users consider switching to the Vimeo recording option offered by the Zoom plugin. Once the recording videos are served from Vimeo it will not be possible for users to download it even if you are using the Basic Free Vimeo plan. You can read more on this here.
This is Adeel, the author of the popular LearnDash myCRED Integration addon and Adaptive Learning with LearnDash. Former BadgeOS contributor and Ninja at WooNinjas. I have been working as a web developer for the past 8 years now. I am passionate about applying the principles of progressive education to online learning and I believe e-learning should evolve according to the learning paradigm of the 21st century