It doesn't matter whether you're promoting it or someone else is promoting it. The law affords individuals the right to control and make money from the commercial use of his or her identity (the "right of publicity"). If the individual(s) in the video/photo hasn't consented to allowing their likeness to be used to promote a product, service, idea, or thing, you can't publish the footage, even
via a third party, without incurring liability for misappropriation of name or likeness should one or more of the individuals in the video/photo choose to sue. The fact that you yourself are not benefiting materially or financially from the promotion is irrelevant.
[While we're on the subject of consent and releases, note the following from YouTube's
Terms of Service
That's in there to cover YouTube's a** in case anyone decides to sue. You can bet ESPN3's got theirs covered. Given ADGT/Salient's track record, it might asking whether you trust them to cover yours?]