I watch the video and that is definitely some kind a green screen manipulation. In the video Biden’s hand floats over one of the microphone it making it appear to be the size of a basketball. Nice screen grab, you caught it.
At this same point, you can see that the outline of his body against the other features in the background looks off.
These idiots can’t even do a good job of faking stuff!
I’m sure analysis of this fake news event will be banned from Twitter as “Hate Speech!”
It does look strange, but could it be simply that his hand is really in front of those big fuzzy microphones because the reporters are thrusting them out on those long booms and Biden is doing his creepy, “See, how close I am to you? I’m a real friendly regular guy!” schtick.
Could be a bit of editing took place; weird in any case and certainly NOT raw, untouched video ...