3 column layout for a video player page?

I'm designing a new layout for a popular video site.

We are doing a "large" layout for min-width 1366px. The video player can't get any bigger, so on the video player pages, we have some extra room for the large layouts. Is it better:

1. To center everything on the page and have about 50px of whitespace on the sides. (the header being bigger than the content div)
2. To have a 3rd column on the right with maybe related images from our image section as there is already a section for related videos on the page. I find the 3rd column fills the space but looks way more cluttered.. are there any takes on 3-column layouts with media on the page?

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