One guy seems quite upset and says it's not funny. He argues with them. He says what if it's your sister. He says, "she's not dead, she's drunk". This is the person in the video, who is not accused of rape, but was making a lot of jokes about it while obviously drunk.
Michael Nodianos
Here is one of the accused rapists:
Ma'lik Richmond
Here is a pixelated (to protect victim's identity)picture of the victim and the two men accused of raping her.
The Atlantic magazine has a good detailed piece on the rape here.