Easiliy optimize videos with FFMPEG from a folder

video-opt.sh

# Iterate over MP4, MOV and M4V files in the directory
find "." -type f \( -iname "*.mp4" -o -iname "*.MP4" -o -iname "*.mov" -o -iname "*.MOV" -o -iname "*.m4v" -o -iname "*.M4V" \) -exec sh -c '
  for file do
    echo "Optimizing: $file"

    # Extract the file extension
    EXT="${file##*.}"

    # Generate a random file name for the temporary file, preserving the extension
    TMP_FILE="/tmp/optimized.$RANDOM.$EXT"

    # Use ffmpeg to optimize the video
    ffmpeg -i "$file" \
      -c:a copy \
      -c:v hevc_videotoolbox \
      -map_metadata 0 \
      -movflags use_metadata_tags \
      -preset slow \
      -q:v 50 \
      -threads 0 \
      -vf "scale=''min(1920\,iw)'':-1" \
      "$TMP_FILE" < /dev/null

    # Preserve the original timestamps
    touch -r "$file" "$TMP_FILE"

    # Replace the original file with the optimized video
    mv "$TMP_FILE" "$file"

    echo "Optimized: $file"
  done
' sh {} +