gopro-rename-files.sh

#!/bin/bash

# 
# This script rename to a more userfriendy file name, so we can easly view/sort it etc.
# Specially in multi-part files, Given the Nameing convention:
# https://community.gopro.com/s/article/GoPro-Camera-File-Naming-Convention?language=en_US
# 
# Eample: 
# - GH010051.MP4 ==> GH0051-01.mp4
# - GH020051.MP4 ==> GH0051-02.mp4
#
# Testing: add the --dry-run parameter so visualize what would the comand do
#
# Folders: For now files are kept in the same folder where we are running the script
#

# Set the directory containing the GoPro files
input_dir=$(pwd)

# Check if the input directory exists
if [ ! -d "$input_dir" ]; then
  echo "Input directory does not exist!"
  exit 1
fi

dry_run=false

# Check for command line arguments
while [[ $# -gt 0 ]]; do
    key="$1"
    case $key in
        --dry-run)
            dry_run=true
            shift
            ;;
        *)
            echo "Unknown option: $key"
            exit 1
            ;;
    esac
done

# Iterate through each file in the input directory
for file in "$input_dir"/*; do
  # Check if the file is an MP4 file
  if [[ -f "$file" && "$file" == *.MP4 ]]; then
    # Extracting chapter number and file number
    chapter_number=$(basename "$file" | cut -c 3-4)
    file_number=$(basename "$file" | cut -c 5-8)

    # Extracting encoding type
    encoding_type=$(basename "$file" | cut -c 2)

    # Constructing the new filename
    new_filename="$input_dir/GH$file_number-$chapter_number.mp4"

    # Move the file
    if [ "$dry_run" = true ]; then
        echo "Dry run: Would convert $file to $new_filename"
    else
        mv "$file" "$new_filename"
        echo "Converted $file to $new_filename"
    fi
  fi

  ## TODO: Clear LRV and THM
done

echo "Conversion complete!"