set_filedate_from_metadata

#!/bin/bash

if [ $# -eq 0 ]; then
  echo "Usage: $0 <mp4_file>"
  exit 1
fi

mp4_file="$1"

# Get creation date from metadata using ffprobe
creation_date=$(ffprobe -v quiet -show_entries format_tags=creation_time -of default=noprint_wrappers=1:nokey=1 "$mp4_file")

# Set file-modified-date to creation date
touch -c -t "$(date -d "$creation_date" +"%Y%m%d%H%M.%S")" "$mp4_file"

echo "File-modified-date set to the creation date: $creation_date"