Why do we care if there's more video? There was only one event, and we have video of it. There were probably 10 phones or more recording this, and they haven't magnified anything.
The only reason this is a big deal is because football players were involved, and some guys wound up in the hospital. It remains to be seen how serious their injuries actually were. In this day and age, you'd be an idiot not to go to the ER, just in case you want to cash in.
Sorry if that sounds cynical, but we've seen this movie before around here.