How Did Peter Jackson Make 100-Year-Old Black And White WWI Footage Look New?

The director of the Lord of the Rings trilogy was given about 100 hours of film from the time period – some of it sped up, some of it in terrible disrepair, all of it black and white. First, he and his team restored all of the footage. Then, they “retimed the footage, speeding up the frame rate, adding extra frames digitally and smoothing out the movement.” – The New York Times