I have currently been learning After effects and have made this Stinger transition for this years Extra Life, its a great way to get from one scene to another without a hard cut. Its free for everyone to use during Extra Life, it is a small file so will not clog down your system on transitions. Do not worry that the video shows black on both ends, once in OBS/Stream labs this will be transparent.
If you have any issues then post below! I should be around to answer questions or even make changes if possible.