Not at all.
Let us say that supposed "news" stories can be ranked on a scale of zero to ten. Zero would be if they are totally crap, ten would be totally true.
Fox has a very gullible audience, but even they cannot spew total crap that can be easily disproved. This clip, taken on someone's phone, somewhere, at some time, shows some large guy beating up a smaller guy. It would be less credible only if the big guy was alleged to be Al Sharpton, or perhaps Juniorbush or Dick Cheney. The latter would get a negative rating.
This clip only proves that probably some large Black dude and his posse did beat up a smaller guy, somewhere at some time. CU4 and sirs want to believe the worst, so they do. Snopes has no reason to lie or disbelieve this. They certainly have better means of judging the credibility of this clip than sirs of=r CU4, who have none at all.
Fox regularly runs crappy opinions about things that have some basis in truth. Something bad did happen in Benghazi, after all. Fox would not run a clip taken in Benghazi and state that it was filmed in Akron, Puyallup or Punxatawney. But they can blame it on Hillary.