Change ISO (with mid ISOs) with dial? (600D & Video)...

[emphram]

I found another thread with this question, but no one answered. I shoot video on a 600D, and I would like to be able to change the ISO with the dial wheel in the same way you change the shutter speed, without having to open other menus and be able to have access to the mid point ISOs (i.e. 160, 320, 640, etc)... is this possible? Note: shutter speed would be locked at 1/50 or 1/60.

Thanks!