Those of you with some kind of interpersonal skill should convince friends who are un- or under-represented types to post videos anonymously.
I think the best type reference videos would be conversations between two people on a subject of mutual interest, alternatively people monologuing on a subject of interest (probably not their type, unlike many of the above videos). Standing would be better than sitting, imo. Outdoors a plus.
This girl reminds me of myself: YouTube - INTP You can tell her mind is skipping around from place to place, distracting her from the video, and she finds this amusing. This guy too: YouTube - INTP. The others are less like me, but similar to each other and other INTPs I've known.