https://github.com/grishka/miscellaneous/blob/master/AVDecod...
edit: I watched the video. It only took them until the 13th minute of a 15-minute video to show something resembling a real video waveform, lol. That's, uh, not how you explain how TV works.
Without digital circuits, the delay line was a piece of glass. You’d convert the video signal to a sound wave, send it through the glass, and (hopefully) get it back exactly 64 us later so it aligns with the next scanline.
Here’s a picture: https://www.eevblog.com/forum/projects/glass-ultrasonic-dela...
The video contains no insight at all into "why" color TV was so difficult. It just lists and describes a few key advancements.
Also the "invention" of color TV is very different from the commercialization.
It does not have to be coherent, because it's entertainment, closer to a sitcom than educuation. If you think about it too hard you'll ruin it for yourself.
Before you blame YouTube and AI though, have a look at what documentaries on TV are and used to be like. With few exceptions they're not much better.
(How Analog Color TV Works: The Beginnings) https://www.youtube.com/watch?v=dX649lnKAU0
Then the playlist on TV stuff: https://www.youtube.com/watch?v=l4UgZBs7ZGo&list=PLv0jwu7G_D...
Don't blame me for the rabbit hole :P
I don't know what it is about the Tintin comics, but for many of the fans, the panels are so strongly memorable even after so many years, is quite amazing.