The video depicts a person using a brush to apply a sauce to a piece of meat that is cooking on a grill. The meat appears to be a large cut of ribs, and the sauce is being applied in a thick, even layer. The grill is outdoors, and the person is using a red brush to apply the sauce. The sauce itself is a dark, rich color, suggesting that it may be a barbecue sauce. The person's hand is visible as they work the brush back and forth over the meat, ensuring that it is well-coated. The grill marks on the meat indicate that it has been cooking for some time, and the sauce adds a glossy sheen to the surface of the meat.