What is the ruling on publishing humorous videos that do not contain images of women, and earning money from them via YouTube, knowing that these videos were not filmed by the publisher, and their original owners are unknown? Is it permissible to republish them and earn money from them without the owners' permission?

It is permissible to publish works available on public websites, benefit from them, and earn money from them, provided their owners have not stipulated a prohibition against publishing them without their permission, and provided these works do not contain anything forbidden by Islamic law. It is not a condition to seek out their owners and ask their permission to publish them.