ffmpeg -i 20210512105020.mp4 -y -filter_complex "crop=w=3630:h=2670:x=920:y=500,scale=iw/2:ih/2,pad=ceil(iw/2)*2:ceil(ih/2)*2" \ -preset superfast -threads 2 -b 1.8M -minrate 1.8M -maxrate 1.8M -bufsize 2M -vcodec libx264 ouput.mp4
