Trying to save mp4 (H.264) video processed with VideoReDo fails with error "Error setting output options".
Video was originally encoded with Handbrake.
Issue was caused by variable frame rate. This is an option in Handbrake video encoding settings.
VideoReDo doesn't support variable frame rate therefore saving output fails with the above error.
Re-encode video with Hanbrake choosing Constant Framerate
VideoReDo TV Suite 4.20