Thanks! The vidtools aren't available in the public builds, but you can create the video within the unity editor (which is what I did for my video), or enable the vidtools and make your own custom build if you prefer. To enable, just drag the VidTools prefab into the scene. This allows you to set precise values for the camera, and as you noticed to record and play back inputs. The two advantages of the input recording is that 1) it can be played back with some smoothing applied to make it more pleasant to watch, and 2) there are some controls for setting a 'savepoint' in your input recording, so if you mess something up you can rewind the recording to that point and attempt again. It's not very intuitive to use at all since it wasn't intended for anyone other than myself, but you can read through the code to see the various shortcuts for doing that stuff if you're interested. I don't have a tool for programmatically creating the inputs, like via curves or something, but would be an interesting approach as well.
Be sure to share your videos here if you end up making any :)