I see a lot of youtubers using footage from other peoples videos which have a standard youtube license and justifying this by adding a link to the other persons video in the description. Is this allowed on youtube?
Yes, you can monetize someone else's content if it falls under Fair Use. Though reuploading someone's content or not adding much of your own does not fall under Fair Use, meaning you can't just post whatever and put Fair Use in the title. Remember to not add much content of someone else and you'll get a better shot at Fair Use.Is it possible to monetize videos with fair use licenses?
Yes, you can monetize someone else's content if it falls under Fair Use. Though reuploading someone's content or not adding much of your own does not fall under Fair Use, meaning you can't just post whatever and put Fair Use in the title. Remember to not add much content of someone else and you'll get a better shot at Fair Use.
There's no real percentage except for "The less the better". Fair Use is up to a judge to decide.What is the correct portion of usage if we take other people's videos to fit the fair use rules.
Here I do not understand the right portion.