What is the exact model number?
I did find this for “Satellite L770-ST4NX1”;
Display Resolution 16:9 aspect ratio, Supports 720p content, 1600x900.
http://us.toshiba.com/computers/laptops/satellite/L770/L770-ST4NX1
It was a custom order. But I suppose they all have the same output. I can't even find the downloads for my LT. Standard DVD players put out 480p, right.