: When converting for mobile or web viewing, the libx264 or libx265 codecs provide a balance between file size and visual fidelity. Use a Constant Rate Factor (CRF) of 18–22 for near-lossless results. Optimizing Performance for 4K Content
for f in *.mp4; do ffmpeg -i "$f" -vf "crop=iw:ih/2.39:0:(ih-ih/2.39)/2, curves=preset=vintage" "cinematic_$f" done gladiator ii ffmpeg