OK I found the solution
# This is the config used to launch simulation.
CONFIG = {"renderer": "RayTracedLighting", "headless": args.headless,
"width": args.width, "height": args.height, "num_frames": args.num_frames}
simulation_app = SimulationApp(launch_config=CONFIG)
from omni.isaac.core.utils.extensions import enable_extension
enable_extension("omni.replicator.isaac")
from omni.replicator.isaac.scripts.writers import YCBVideoWriter