ffmpeg -i PC.mp4 -vf "scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:(ow-iw)/2:(oh-ih)/2" -c:v libx264 -crf 23 -preset medium -movflags faststart -c:a aac -b:a 128k PC_fhd.mp4
ffmpeg -i MO.mp4 -vf "scale=1080:1746:force_original_aspect_ratio=decrease,pad=1080:1746:(ow-iw)/2:(oh-ih)/2" -c:v libx264 -crf 23 -preset medium -movflags faststart -c:a aac -b:a 128k MO_fhd.mp4
오디오 제외시 -an
ffmpeg -i PC.mp4 -vf "scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:(ow-iw)/2:(oh-ih)/2" -c:v libx264 -crf 23 -preset medium -movflags faststart -an PC_fhd.mp4
ffmpeg -i MO.mp4 -vf "scale=1080:1746:force_original_aspect_ratio=decrease,pad=1080:1746:(ow-iw)/2:(oh-ih)/2" -c:v libx264 -crf 23 -preset medium -movflags faststart -an MO_fhd.mp4
