So here is your answer. You are watching a bootleg unauthorized replay of MSNBC shows on this guy's channel -the channel owner's name is NITEAN KHMER and besides the 'front of the show' commercials that he makes money from you clicking on his you tube channel - the Rachael Maddow show or whatever is uncut without network commercials. So he is recording them and then putting them up on You Tube.
Hit 'pause' and you will se what channel you really are watching and you will see that name as his channel "NITEAN KHMER". That is why no one knows what you mean or think it must be sign language - what it is is a running video of someone doing a podcast or internet call-in show (he has a big microphone in front of him) that yes has absolutely nothing to do with the content of the MSNBC show you are watching.
Why? It seems to be for one purpose only - to cover up the MSNBC logo completely in the lower right corner. Something to do with it being a bootleg unauthorized rebroadcast of the news show and not wanting it to be caught by AI. That is it - it is meaningless irrelevant thing covering up the news channel's logo whether it be MSNBC or CNN on the screen. Yes it has nothing to do with the content you are watching. and yes it is not sign language or anything like that You are welcome.
