Here’s one that is a bit more professional, and somewhere between marketing and research:
Its target audience isn’t CS researchers, but hopefully, you can see how the “pros” here make these kinds of video. Nothing fancy, but clearly narrated and well-paced, and kept simple.
You might recognize the research as Feng Liu’s thesis, building on the Igarashi-Hughes “as-similar-as-possible” warp we described in class.