Read other letters about this article
First, they're photos, not video. Second, they show abuses at locations "other than Abu Ghraib," according to the ACLU's Amrit Singh, who wrote in March:
The public value of these images is considerable. As visual records, they convey what words could not possibly communicate. As evidence of abuse at locations other than Abu Ghraib, they undermine the Bush administration’s claim that abuse was aberrational. The disclosure of these images is critical to help the public understand the scope and scale of prisoner abuse as well as the extent to which such abuse was caused by policy decisions. Disclosure is also crucial for assessing official responsibility for the abuse.
http://www.huffingtonpost.com/amrit-singh/release-photos-of-other-a_b_173046.html
The Editor & Publisher article references photos and video that show abuses at Abu Ghraib and which Sy Hersh spoke of at the ACLU event in 2004 (http://boingboing.net/2004/07/15/hersh-children-raped.html). the incidents of rape and murder are in the Abu Ghraib photos/video. I don't think we know exactly what's in the photos Obama has refused to release.