https://youtu.be/9dZa0U52nPs watch the numbers
What is that video supposed to show or prove? The feed to the CNN is clearly not going to be a direct interface to a centralised vote counting record (especially considering the source data isn't all digital as you have humans counting paper ballots). So what you have is a string of say three people between a counting office, who presumably counts a sheaf of ballots and calls the numbers for each candidate to a press representative who distributes the info, to a spod at CNN who collates all the incoming messages and hands them to another spod who adds them to the on-screen display.
Multiple people interacting every time a ballot is announced, across each one of the 50 states, (tens of?) thousands of interactions total. All by people who will be under pressure to get the news out, fully caffeinated and probably at the thin end of an 18hr day. The potential for a group of ballots to be initially called for the wrong candidate on the tv screen and then corrected is obviously huge if you stop and think about it.
I would also wager there are just as many such 'swings' to Trump, which are no doubt on Youtube if you know the right Tin Foil Hat wearer to subscribe to.