Current you can Not add video to campaign (At ALL) and can Not add "Static view" with play button. What it adds is extremely Low-Quality Gifs that is Blurry, full Dots, Crosses, pixels so Bad. This is unprofessional, no other platform has such. Bad quality content - poor gifs/no video function or using image with no click play button looks unprofessional, lowers click rates and lowers the reputation supplier of substance. All other platforms gifs (are high quality view, can add proper video and they have option to select static view. In this day age - bad video/blurry is not acceptable. What Missing - can fix the video feature - most critical is adding and option to static video. And also fixing the gifs quality too. Maybe check out mailerlite - they have a very good feature. Static video - will add a static image of thumbnail automatically from youtube and then select a play button on top.