Complex sentence: The video (which was shot in black-&-white) depicts a man killing a woman with a kitchen knife then taking a picture of her off the wall with his hand with blood on it and then throws in it the fireplace.
Split into simpler sentences: The video (which was shot in black-&-white) depicts a man killing a woman with a kitchen knife. He then takes a picture of her off the wall with his bloody hand and throws in it the fireplace.