How do you analyse "using" in this sentence
Listen to this,
"Cover letters are so old-fashioned.
Show us who you are with a cover-letter video.
Upload your video to YouTube or Vimeo using .mov, .avi, or a .mpg file."
We look forward to meeting you.
Well, I guess that's meeting me.
I swear I don't even know what language that was.
Source: The Intern (2015) Movie Script
I would think the complete sentence is:
"Upload your video to YouTube or vimeo that use .mov, .Avi, or a .Mpg file."
And that usage is "reduced relative clause"
But I am not sure