How to Make a video greyscale in FFMPEG You can make an entire video or a part of it greyscale. Make full video greyscale ffmpeg -i input.mp4 -vf "hue=s=0" out.mp4 Make part of video greyscale ffmpeg -i input.mp4 -vf "hue=s=0:enable=\'between(t,3,5)\" out.mp4