It doesn’t matter whether the faces are blurred due to low resolution or if they were blurred by software, it takes some very sophisticated software to enhance something like this. The one advantage you have is that it is video, and good software can build detail by comparing many frames.
I'm sure the video from the Dome camera is high res. BTW, we do know that the video of the J5/6 pipe bomber when he was sitting on a bench outside the DNC was INTENTIONALLY made so low res that even the lousiest cameras on the market are not even that low resolution.