Matthew Caulfield's posting is excellent.  I've been hoping someone
would bring attention to this subject.  Obviously, Google, owner of
YouTube, intends to make money, but the copyright enforcement issue
is very vague.  Here are some of my own experiences with YouTube.

When I posted a video of one of my pianos playing a tune in the public
domain, I was notified of a "possible" violation.  I used the challenge
process and the violation was rescinded with no marks on my record.
That same scenario was repeated several times.  But when I posted a
Gershwin tune, I received a full blown copyright strike.  I removed
that posting and after several years, I have an unblemished account.

Recently, I posted a video of "Dizzy Fingers" played on the Ampico
at Tempo 95.  I was informed by several astute collectors that Harold
Powell incorrectly marked that rolls tempo, that it should be played
at Tempo 115.   So I decided to post a second YouTube video of that
same roll played at Tempo 115.  When I did, I received a warning about
copyrighted content.

When I post on YouTube, I restrict access by making it "Private".
I remove the "Private" restriction only after the video passes
inspection at YouTube.  Even though it is very difficult to get the
information, YouTube does identify the offending content by timeline
location as well as the name of the content.  In this case, they
correctly identified the tune as "Dizzy Fingers" and the "match" was
made after the first few bars of music.

Since I don't want advertising to be on any of my postings, the "Dizzy
Fingers" at Tempo 115 has never gone "Public".   The comparison of
those two rolls speeds had been promised to several people and is also
mentioned in the description of slower YouTube posting.

YouTube is pretty much a bully on some of the stuff, but in this case,
"Dizzy Fingers" is not in the public domain.

Bob Taylor
Missouri