MP4 Merger Without Reencoding

Overview

The MP4 Merger Without Reencoding is a PowerShell script designed to combine multiple .mp4 files into a single .mp4 file without reencoding, ensuring that the process is fast and retains the original video quality. Additionally, it can convert .mp4 files into .ts format as part of the merging process and includes features like timestamp adjustments for GoPro videos and interactive file management.

This script works in the folder where it is placed. The combined .mp4 file will use the name of the folder being worked in.

Features

• Combine Without Reencoding: Merges multiple .mp4 files into a single .mp4 file without any reencoding.
• Convert and Merge: Optionally converts .mp4 files to .ts format using FFmpeg and merges them into a single .mp4.
• Timestamp Adjustment: Automatically adds 4 hours to the timestamps of GoPro files (names starting with GH0*).
• Interactive File Selection: Provides options to include or exclude files using a graphical file picker.
• Custom Directories: Allows setting custom input and output directories with default folder options.
• Temporary File Cleanup: Offers the choice to delete temporary .ts files after merging.

Prerequisites

1. PowerShell (Version 5.1 or later).
2. FFmpeg:
   • Download and install FFmpeg from FFmpeg.org.
   • Ensure FFmpeg is added to your system's PATH for command-line access.

Installation

1. Clone the repository or download the script:

   git clone https://github.com/yourusername/MP4-Merger-Without-Reencoding.git
   cd MP4-Merger-Without-Reencoding

2. Ensure the script is executable:

   Unblock-File -Path .\mp4_merger.ps1

Usage

1. Open a PowerShell terminal and run the script:

   ./mp4_merger.ps1

2. Follow the prompts:

   • Confirm or change the input and output folders.
   • Include or exclude specific files.
   • Adjust timestamps for GoPro files if applicable.

3. Upon completion, the merged .mp4 file will be saved in the specified output directory, with the name of the folder being worked in.

Example Workflow

1. Place .mp4 files in a designated input folder.
2. Run the script and select the desired output directory (default is ./converted).
3. The script will:
   • Merge .mp4 files into a single .mp4 without reencoding.
   • Optionally convert .mp4 files to .ts and merge them.
   • Optionally delete the .ts files after merging.

Options and Controls

• y/n/d/q Prompts: During folder selection or file operations, you can:
  • Press y to confirm.
  • Press n to decline or make changes.
  • Press d to reset to the default folder.
  • Press q to quit with confirmation.
• File Picker: Use the graphical interface to include or exclude files interactively.

Troubleshooting

• Ensure FFmpeg is correctly installed and accessible via the command line.
• Run PowerShell as an administrator if permission issues arise.

License

This project is licensed under the MIT License. Feel free to use, modify, and distribute the script. See the LICENSE file for details.

Contributions

Contributions are welcome! Feel free to fork the repository and submit a pull request with improvements or fixes.

Acknowledgments

Thanks to the FFmpeg community for providing an essential tool for multimedia handling.