The thing is, the only place where you can view a portrait-shot video without compromise, is on a portable screen (phone / tablet) or computer. But post it on youTube, or view it on a TV or such, and you'll end up with a lot of black on the sides and a shrunk down image in the middle.
rolf wroteAs long as you don't switch between the two :)
Oh yeah, that's the worst :D
(xterm, sorry for the inevitable geeky segue!)