The best way to help make sure that what you post to Facebook doesn't violate copyright law is to only post content that you've created yourself. It's possible to infringe someone else's copyright when you post their content on Facebook, even if you: Bought or downloaded the content
2) Facebook users are expected to respect intellectual property rights. This means not uploading, sharing, or distributing subject that you do not have the necessary rights or licenses to use. This includes copyrighted photos, videos, music, articles, and any other creative works.
3) in you tube Creators should only upload videos that they have made or that they're authorised to use. That means that they should not upload videos that they didn't make, or use content in their videos that someone else owns the copyright to, such as music tracks, snippets of copyrighted programmes or videos made by other users, without necessary authorisations.