Not quite!
I can help!
First you need to go to youtube (or something like that if it's supported) and find your video .. then click the link and copy it and come back to afn.
There's a button on the top of the post window bar with three dots and a down arrow. Click that and click the ist option (media)
Click that and paste your URL into there, and click save
And voila! Its on .. it's in ...