Window Water Baby Moving (1959)

On a winter's day, a woman stretches near a window then sits in a bathtub of water. She's happy. Her lover is nearby; there are close ups of her face, her pregnant belly, and his hands caressing her. She gives birth: we see the crowning of the baby's head, then the birth itself; we watch a pair of hands tie off and cut the umbilical cord. With the help of the attending hands, the mother expels the placenta. The infant, a baby girl, nurses. We return from time to time to the bath scene. By the end, dad's excited; mother and daughter rest. Preserved by the Academy Film Archive in 2013.

Unfortunately the movie Window Water Baby Moving is not yet available on HBO Max.