Click the 'tag this video' link on the page for you to type in the people that you want to tag. Once done, you can just press the 'done editing' option for you to include them right away. If you're uploading the video, don't forget to just press '@', followed by your friend's name/s for them to be tagged right away.
How do you tag someone in a post?
Double Whammy. You can also tag someone in a post you're sharing by adding that person's name in the comment section before you click "Share" to post it to your Timeline. This brings your shared post to the tagged person's attention to make sure they don't miss it.
How do you tag someone in a link on Facebook?
Click the comment box and type the "@" symbol without the quotes. Enter the first name of the friend you want to tag. Facebook displays a drop-down menu with a list of friends who's names start with that letter.