maybe because it has really bad stuff in it or the music is copyright
Anything that is written or recorded is automatically protected by copyright. Neither registration nor notification is not required for protection.
Because copyright protection is automatic, virtually everything you encounter online will be protected. The exceptions would be works created by the federal government, and works donated to the public domain by their creators. On YouTube, it is safe to assume that everything is protected by copyright unless explicitly stated otherwise.
YouTube and copyright owners decide what content appears on YouTube. YouTube decides based on the community guidelines while copyright owners decide based on copyright laws.
YouTube has an excellent discussion of copyright on their website; see the link below.
One can go to YouTube to find instructional videos on how to shave. YouTube has a multiple of how to videos on just about everything from how to shave to how to play baseball.
I've seen some for sale on amazon. you can also watch instructional videos on youtube!
If you are the copyright holder, simply fill out the complaint form (link below) and YouTube will work with you to address the issue. If you aren't, you may wish to alert the copyright holder.
According to YouTube policies, "A copyright strike may expire in 6 months, subject to certain conditions, as long as no additional copyright notifications are received during that time."
You press the clutch, and shift gears. There are great instructional videos on youtube.
According to the rules for Youtube you are not supposed to post copyright material on the site. So theorietically there should be no problem with downloading from youtube; however sometimes people do illegally post copyright material. Therefore you need to be careful in downloading from Youtube.
Instrumental music is protected by copyright, but YouTube's automated matching system may not immediately catch an unlicensed use. See YouTube's copyright polices at the link below for more information.