Police said 33-year-old Jennifer Zuniga is heard screaming obscenities and encouraging the 14-year-old boys to punch each other in her front yard in the city of Ceres, Calif., near Modesto.
Several minutes into the video, a bystander is seen stepping in to stop the fight.
When asked about the fight, the woman said, "This boy has a problem with my son. I'm letting him handle it."
Officials said no one was hurt. They arrested Zuniga on suspicion of child endangerment and contributing to the delinquency of a minor.
Authorities said the boys will not be charged.