how do you get vertical splitscreen, it's on horizontal for me i want to change it?

If it's not in the Video Options settings, then it's not there at all I'm afraid

It isn't available most of the time. I doubt they included it.

I have no idea, but I know for a fact you can.  My friend and I played co-op and it defaulted to vertical.

You probably can't change it, but the real question is why in gods name would you actually WANT to play in vertical split screen?

If you're playing split screen on an SDTV, the game defaults to horizontal split screen. However, if it's an HDTV you're playing on, then it's going to be vertical. Unfortunately, you can't change that from any of the menus. The game doesn't give you a choice.

" If you're playing split screen on an SDTV, the game defaults to horizontal split screen. However, if it's an HDTV you're playing on, then it's going to be vertical. Unfortunately, you can't change that from any of the menus. The game doesn't give you a choice. "

Vertical split screen? Yuck.

Why would you want Vertical splitscreen anyways?

" @expletive:  i have a big tv that's why it's but if it is on horizontal haha "

I'd just like to check, the split screen is only for a max of 2 players?

" I'd just like to check, the split screen is only for a max of 2 players? "

Actually it can be done. The game automatically defaults based on the size of the TV, so all you need to do is change the video output on your console (I did mine on a PS3, not sure about Xbox360). I changed my PS3 output from 480p to 1080p on my widescreen and it fixed the problem.
 
For all you veritical split naysayers, Borderlands is significantly improved with a vertical split, because you can actually see a weapon AND its stats at the same time. The menu is smaller, but as a result you have to do less scrolling.

Hey guys, I have a question. If you're playing splitscreen, how does the second person's save data work? Can they save their profile and load it back up whenever they play? Do they have to sign into an account? How does it work?

now i am going to tell you the truth  you go to display on you xbox360 settings change is to normal split-screen horizontal if you change is to widescreen split-screen is vertical can vertical has its ups vertical it how you play single player just all the bars are mashed together and the gun to the side like normal  horizontal is the hole gun showing and that is kinda odd

vertical? 
 
EWW

I really wish they'd do a patch or update where you could play online with split-screen.  I play this on co-op split-screen, but we'd love to play online with two other friends.

" I really wish they'd do a patch or update where you could play online with split-screen.  I play this on co-op split-screen, but we'd love to play online with two other friends. "

It's vertical for me.

For people criticizing vertical split-screen, please note that at least it doesn't have the bullshit COD blackout-bar horizontal screen.

@agentofchaos: Atleast you can see what you have!