I consider the approach of using virus scanning inherently flawed: They rely on heuristics and rules to essentially create a blacklist. And they add a ton of co

I consider the approach of using virus scanning inherently flawed: They rely on heuristics and rules to essentially create a blacklist. And they add a ton of complexity (more code -> usually more bugs) which is not something you want if you work with untrustworthy data. What you instead want is a whitelist: Only allow properly formatted images and videos and ruthlessly reject anything else. I wrote about how I implemented this for my service in another response.