Digital Millennium Copyright Act Notification Guidelines
All materials (video content and its details) are copyrighted of the respective owners who allow public use by enabling the external video embedding permission. Here is Youtube Term of Service point 6C for Content Owner (video uploader):
For clarity, you retain all of your ownership rights in your Content. However, by submitting Content to YouTube, you hereby grant YouTube a worldwide, non-exclusive, royalty-free, sublicenseable and transferable license to use, reproduce, distribute, prepare derivative works of, display, and perform the Content in connection with the Service and YouTube's (and its successors' and affiliates') business, including without limitation for promoting and redistributing part or all of the Service (and derivative works thereof) in any media formats and through any media channels. You also hereby grant each user of the Service a non-exclusive license to access your Content through the Service, and to use, reproduce, distribute, display and perform such Content as permitted through the functionality of the Service and under these Terms of Service. The above licenses granted by you in video Content you submit to the Service terminate within a commercially reasonable time after you remove or delete your videos from the Service. You understand and agree, however, that YouTube may retain, but not display, distribute, or perform, server copies of your videos that have been removed or deleted. The above licenses granted by you in user comments you submit are perpetual and irrevocable.
If you found that the video uploader is not the authorized person who used your copyrighted materials, you can contact us. It is our policy to respond to clear notices of alleged copyright infringement that comply with the Digital Millennium Copyright Act. In addition, we will promptly terminate without notice the accounts of those determined by us to be repeat infringers.This Website will respond expeditiously to claims of copyright infringement that are reported to This Website. If you are a copyright owner, or are authorized to act on behalf of an owner of the copyright or of any exclusive right under the copyright, and believe that your work has been copied in a way that constitutes copyright infringement, please report your notice of infringement toThis Website by providing all the necessary information by using our Contact menu.