Marcus Mumford reveals Steven Spielberg directed his video for Cannibal, tweeting, "On Sunday 3rd July in a high school gym in New York, Steven Spielberg directed his first music video, in one shot, on his phone. Kate Capshaw was the almighty dolly grip. When people get it, it blows my mind. Kate and Steven just got it, and I cannot thank them enough." He also confirmed his wife, Carey Mulligan, handled costumes and sound.