Thanks opto for the reply and for confirming what I was thinking. There has to be a better way to quickly preview without all the hassle of going to an external source and hijacking the browser with all the tabs. Maybe that would be changed in the future? Anything is possible technically.
By giving credit, I mean Shutterstock probably gets paid for each video a user clicks on Download to actually download the file to their machine (skipping the preview stage with the multiple tabs on the browser.) But then again, nobody knows the monetary arrangement behind the scenes. That's why I didn't want to download videos and delete them on the spot if I don't like them.
Well, thanks for getting back to me, I'll have to deal with it until a more streamlined solution is implemented next year.