For those who don't know, my son gave me a code that can help you see videos better on YouTube. Someone else had made a video about it. For some reason, only some of them say "Watch in high quality."
But it doesn't matter - ANY YouTube video you go to, add this onto the end of the URL: &fmt=18
You'll immediately see it MUCH sharper.
I love it - my own Camtasia videos were a bit blurry with the text but this makes them very sharp!