I believe in the long long ago we just called this a "self-shot"

Oh, these are all very straightforward:

So its too relaxed?

Start the video. It's like it was meant to be.

If you're using Android, Jift is a pretty nice little app that allows you to post to all three at once, but you can also view all three feeds as a single feed. It's pretty neat, but I wish I had a desktop equivalent.

Nevermind, found one!