I was weirded out by the disappearing finger as well. There was a recent article in The Atlantic that mentioned Google had been testing AI to improve video clarity. It's possible we are seeing a combination of that and motion interpolation artifacts like what was mentioned here. I used yt-dlp commands to download both the CNN video and the video from the white house channel. They both look less weird on a larger screen. That process was called out here.
I was weirded out by the disappearing finger as well. There was a recent article in The Atlantic that mentioned Google had been testing AI to improve video clarity. It's possible we are seeing a combination of that and motion interpolation artifacts like what was mentioned here. I used yt-dlp commands to download both the CNN video and the video from the white house channel. They both look less weird on a larger screen. That process was called out here.