would you mind sharing a 4k video and cropped 1080p video?
I didn't the experiment again, as follow:
A. Shoot 4k, no crop, output 1080p (downscale, but maintain picture frame)
B. Shoot 4k, crop to 2.7k, output 1080p (zoom)
C. Shoot 4k, crop 1080p, output 1080p (zoom again)
D. Shoot 1080p...