Quick Question for You: VINE -> TWITTER

How do I Vine a video from my Macbook, or how did @cjzero do this:


Vine of Stephen Curry


Clearly that was an HD widescreen video he had on his computer and he was able to somehow Vine it?


I bet it's simple, but I can't figure it out from trial & error or Googling it. Thanks in advance.

Bump for the night shift