Youtube me Copyright material ke fare use ka kya matlab hota hai?????

Mere pyare dosto, Aapne bahut baar dekha hoga ki youtube per kuch log aise hai jo dusre ke copyright material bhi use karte hai.for example movie, music ,video clip etc.Aisa isliye hota hai ki kyuki kuch log copyright holder se permission lekar aisa karte hai.Agar aap kisi ke video , movie ya song ko youtube per daal kar monetize karna chahte hai to youtube per upload karne se pehle apko uske copyright holder se writtern permission lena hoga.Copyright holder se permission lekar agar aap kisi ke movie , song etc ko youtube per upload karte hai aur usko monetize karte hai to isko hi Copyright material ka fare use kehte hai.