Thanks for reaching out. While we can't cover specifics, your best resource will be our Help Center resource on what is copyright: https://goo.gl/ePhCcF . You may also want to review info on fair use and creative commons from there. Hope this helps.
@TeamYouTube can I use my channel's videos on another channel end screen?
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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