Creaking noise under high power/torque

Can you anyone help me diagnose this problem? I've had the bike for just under a year and have put 150+ hours riding on it.

  • note the creaking in the power stroke on the drive side
  • it only happens at sprint power 750W+ during the highest torque portion
  • it mostly originates from right side, but sometimes left side as well
  • the problem just started recently
  • it "feels" like it's under my pedals or in the drivetrain somehow

Video: drive.google.com/.../view