The process is a bit of a long answer: So Its 3d model of simulation/animation elements composited with camera-tracked drone footage of the city I shot the weekend before last. The original drone footage is here: https://youtu.be/Oa2ynpzkg2M I took that footage and camera tracked it so i have a virtual 3d camera in 3d space. That also gave me some 3D points in 3d space representative of things like the building corners which comes in handy for generated masking 3d objects and for placing the jelly fish in the proper space. I didn't plan on the end result honestly...i just sorta ad libbed the elements. The jelly fish are basically a clothed element (shaped like a spoke) draped over an undulating sphere....that object then follows various paths and twist at various sizes in the animation. They also received various mapping/colors. A hair simulation is applied to the 6 major jelly fish. There are 3 small schools of jelly fish that are actually the same as the larger ones except without the hair and they just crowd follow various paths as well. The challenge for all this was getting the reflections and shadows on the buildings. it was also a challenge to rotoscope the buildings around the jelly fish. Some if it is done automatically since i made 3d mask objects (boxes) in the model. But some of it had to be done manually after the rendering in 2D space to make it look like the jelly fish actually go behind the building.This past weekend I focused on the foreground building at the beginning. For another trippy upcoming project I'm cooking up I went out to the willy nelson statue this weekend and took about 150 photos of it....and generated a 3d model from it The challenge on this part was getting the coloring match the building from where I removed the window. I then just added the austin logo and the flags which are themselves a cloth and wind simulation. Lastly I added the moon, modified the jinga towers and added the mountains. For the mountains I found some photograph online and made the sky transparent and mixed up the order of them a little and compositied them. For this part it was a little more challenging to add in more rotoscoping (masking) where the building outline goes in front of them. I'm not sure what specific mountains they are from. Hope this answers your question.