In article ,
Kenny McCormack wrote:
....
A little more investigation has shown that although methods 1 and 2 had,
indeed, stopped working, this method (shown below does [still] work). So,
there is definitely *something* about this video...

Anyway, this works:

$ youtube-dl --restrict-filenames -f mp4 'https://www.youtube.com/watch?v=S9kn8_oztsA'

So, all is well.

I'm guessing that what's wrong is that the JSON for this file is messed up
(probably, non-existent!). Usually, when I use youtube-dl, I use either
the -g or -j option, which gets information from the JSON data associated
with the video. I think the JSON is also accessed (and thus, needed) if
you access the video "the normal way" - i.e., in a browser.

So, it looks like if you use youtube-dl to directly download the video, it
works - and I'm guessing that's what most/all of the snotty posters on this
thread did, causing them to conclude that nothing was amiss.

However, if you use either -g or -j or try to play the video in a browser, boom!

--
Just like Donald Trump today, Jesus Christ had a Messiah complex.

And, in fact, the similarities between the two figures are quite striking.
For example, both have a ragtag band of followers, whose faith cannot be shaken.