YouTube announced some changes in its copyright protection policy. From now on every copyright owner or author who considers that there is an infringement of their rights will have to provide timestamps in order to indicate where in the relevant content such infringements exist.
Until now there were no requirements in that regard.
The reason for this change is the fact that sometimes YouTube creators are confused to identify the relevant copyrighted content within their videos that they allegedly infringe.
Apart from this, YouTube will provide its creators with more editing options for the removal of such infringing content.