It felt to me like a 90 minute documentary with a 30 minute bonus, as it follows a narrative. So, it's not that long really if you figure you don't really need to watch part 4. In fact, I might even start with part 4, especially if that's all you're going to watch. Anyway it's not called anything and all clipped into 4 parts and just on a Youtube page named "NoClip." How very autistic.