Is it just me?

here are a bunch of videos (all appear to be the same)

https://www.youtube.com/watch?v=EwRaDZCP918

https://www.youtube.com/watch?v=oam54y4o6RU

https://www.youtube.com/watch?v=EVUg7Xh8zOE

https://www.youtube.com/watch?v=v8d9OVq7ViU

https://www.youtube.com/watch?v=-wcqMdnPN90

This one is from a different angle, and it plays:

https://www.youtube.com/watch?v=Q0oyHl3CQeU

Here's were it gets interesting. A frame or two of the first set play, and then I see an error message. If I download the video using a tool like youtube-dl, ALL of them work.

It looks like YT's systems are detecting the content, and blocking it from being displayed in a browser.