I doubt you can. If you mean taking someone elses youtube video and putting under your name. I really don't think you can do that But you can use a screen recorder to record the other persons video and then use the recorded version of their video and claim it as your own video.
Dont do that. Its like stealing s/o elses video. Also,that person can flag u, take it down, and yr channel will recieve a strike. Think about it would you like to work hard on s/t and then s/o else comes and steal it from you ?