about screen rotaion, shortcut key and 3D

how to change screen orientation in MPC.. is there any shortcut key? also is there any shortcut key for change aspect ratio? and how to merge 3D side by side video into 1 which can be viewed by polarized 3D glasses or redcyan..

thats all..thanks

You can find a list of all shortcuts in:
Options > player > keys

Here are a few that use the numeric keypad (calculator keys at right side of keyboard):
alt + 2 = flip vertically
alt + 6 = flip horizontally
alt + 3 = rotate
6 = stretch horizontaly
8 = stretch vertically
5 = reset

It can't modify 3D SBS video. You need a different player for that. If you have a 3D TV, then the TV should have an option for processing SBS video.

thanks mahnn