Although not applicable in this case - If a work is copyright, each holder can object and fill in a form to have the video taken down. In the case of recordings, sometimes youtube automatches, and you will often be allowed to keep a recording up as long as you allow adverts to be put on.   Times are changing and a new copyright directive has recently been passed by European parliament, which may affect what music can be put on social media in a European context. There are all these different rights. The visual rights if you use other people's videos and photos without permission, the artist and record company rights for recordings - and the songwriter's rights which may also be administered via copyright societies. Therefore any of those parties can object and ask for unlicensed material to be taken down. This can also apply to video performances of people's songs if they notice and object to the use made of it.