On the
https://streamatemodels.com/smm/performer/ page, look under "Engagements" to your left and click on "Videos."
You should see the old discontinued video manager first. (if you can't see this, try clicking this link:
https://streamatemodels.com/smm/video/videolist.php )
Click on "Give videos to..." at the top left of the page. The user has to have given money to you in some way to show up here.
I don't know if this is still a thing, but gold shows specifically would always take 5-10 mins to show up in my earnings, so I wasn't able to send a vid right to them right away, be aware of that risk.
As for the new media manager UI, I have no idea how to send videos conveniently from there.
The only way I can think of how to is to go into the new
https://streamatemodels.com/smm/app/messenger/ and click on "group message" at the top right, or send individual messages, but this would mean I'm uploading manually.. which is a waste of time.
I hope someone can prove me wrong, because I really don't want to be forced to upload manually when SM wants to discontinue the page that let you gift videos instantly.