Lately, short videos are becoming more and more popular all around the world. The Internet gets flooded with videos of cute puppies, most interesting stream clips, or product reviews - this video form takes over in terms of views and engagement. In my presentation, I'm going to unveil the challenges that we faced while dealing with User Generated videos in Flip. We'll put on the detective's hat, investigate mysterious video input, notice problems it generates, and try to figure out possible solutions. Last, but not least - I'll dive into the eternal problem of video quality & delivery, where vast amounts of video assets make it even more complex.