case1: A man picked up a water cup to drink.
case2: A man dressed in a suit is adjusting his tie.
case3: Two woman sit before a table.
case4: A young, fair-skinned woman with long blonde hair is standing outdoors on a sunny day, wearing a sun glasses. 
case5: A woman is eating with chopticks.
case6: An older man with short black hair wearing a white shirt, dark vest, and patterned tie stands looking at another person off-screen.
case7: A sad Asian man slowly wiped away tears with his hands.

The videos showcased, from left to right, are baseline sft video, dpo, and our method.