Here's a link to an article (in Serbian) that claims the Srebrenica video is a hoax. It's published on the ICDSM Irish branch's site. The ICDSM as an organization is devoted to covering Milosevic's trial and defending him (and has made some good points about Western aggression and propoganda during the 1999 bombing). They tend to cast Milosevic as a hero, standing tall against Western imperialism, which is a bit much for me, but the article is interesting in itself. Lots of video analysis and discussion of filmaking techniques....

http://www.icdsmireland.org/resources/background/2005/srebrenica-video.htm

Also, here's a link to a Washington Post story which explains how the video came to light:

Human rights sleuth Natasa Kandic, a wisp of a woman with a boyish haircut, spent hours in the cafes of Sid, a town in northern Serbia, listening to whispered tales of Balkan war killings. Then one day, she heard about the videotape.
It showed the summary executions in 1995 of six Muslim men and boys from the Bosnian city of Srebrenica. It had been passed around as a war souvenir among members of a shadowy Serb military unit called the Scorpions. Its commander had ordered copies destroyed, but one, she was told, still existed, held by a dissident member of the unit.
Since that day in 2003, she searched until she found the video. She gave it to the U.N. war crimes tribunal in The Hague, where former Yugoslav president Slobodan Milosevic is on trial, and to television stations in Serbia, where it triggered a sudden self-examination in a society that viewed itself as the prime victim of the Balkan war atrocities of the 1990s.

http://www.washingtonpost.com/wp-dyn/content/article/2005/06/24/AR2005062401501.html