EDIT: I looked at that video again in light of 10Wheels post. I could be wrong with this post.
I think you've got a cap on that valve stem. That cap is a tool to remove the core from a schrader valve.
It looks like this only this is bigger than actual:
Here's another:
Unscrew that before you attach a schrader pump head. Here's what a schrader valve looks like:
