I have a home theater setup and the beam is just barely too wide, and I'd like the video to come in a bit. I'm really surprised there is no was to zoom out, as in add black boxing to the video/squeeze it in. Any thoughts?
With O (key), you set auto-scaling to "Original Size". Then, Alt-O and Alt-Shift-O increase and decrease scale factor.
Take in mind that Alt-O and Alt-Shift-O don't work on "Scaled to screen" auto-scaling.
The hot keys are in this vlc page.