🎞️ MKV Re-Merge & CRC32 Renamer

A simple tool to help you:

• 🧩 Re-merge video files (pick audio/subtitle tracks, keep attachments)
• 📂 Merge full folders (video + subtitles + audios + fonts + chapters into one MKV)
• 🏷️ Rename files with their CRC32 hash for easier verification and organization

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📁 Folder Structure

ROOT/
├── input/         # Place files/folders here
│   ├── movie.mkv              # Single-file re-merge
│   └── MyMovie/               # Folder merge
│       ├── video.mp4
│       ├── subtitle.ass
│       ├── soundtrack.flac
│       ├── font1.ttf
│       └── chapters.xml
├── output/        # Final output files after renaming
├── scan/          # Place files here to calculate or compare their CRC32
├── logs/          # Logs for mkvmerge commands
├── toolnix.py     # Main script (merge + rename)
├── rename.py      # Rename only

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🚀 How to Use

1. 🔧 Rename File(s) with CRC32

• Place your file(s) inside the input/ folder.
• Run:

  python rename.py

• The script will:
  • Calculate the CRC32 checksum
  • Rename the file to include the CRC (e.g., video.mkv → video [1A2B3C4D].mkv)
  • Move it to the output/ folder

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2. 🎬 Re-Merge a Single File

• Place a .mkv (or other video file) inside the input/ folder.
• Run:

  python toolnix.py

• You will be prompted to:
  1. Select audio tracks (comma-separated numbers, e.g. 1,3)
  2. Select subtitle tracks (comma-separated numbers, e.g. 1,3)
  3. Enter video title (shown in MediaInfo / players)
  4. Enter output filename (default = title, or auto-picked if <video>.txt exists)

The script will:

• Re-mux with mkvmerge
• Keep selected tracks (first audio/subtitle set as default)
• Save merged file back to input/
• Automatically rename with CRC32 and move to output/

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3. 📂 Merge a Folder of Sources

• Create a subfolder under input/ (e.g. input/MyMovie/).
• Put inside:
  • Video (.mkv, .mp4, .avi, .mov, .ts)
  • Subtitles (.srt, .ass, .ssa)
  • Extra audio (.flac, .aac, .mp3, .m4a, .ogg)
  • Fonts (.ttf, .otf)
  • Chapters (.xml)
  • (Optional) A .txt file → if present, its filename (without extension) will be used as the output name, skipping the prompt
• Run:

  python toolnix.py

• You will be prompted for:
  • Video title (default = same as folder name)
  • Output filename (default = title, or auto-picked from .txt file)

The script will:

• Multiplex all contents into one .mkv
• Place the merged file in input/
• Rename with CRC32 and move to output/
• Delete the original folder after merging

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4. 🎬 Comparing or calculate CRC32 of files

• Place a file (anything) inside the scan/ folder.
• Run:

  python calculate.py

The script will:

• Calculate CRC32 has of any file inside scan/
• Check if the filename already contains a CRC32 hash:
  • If the CRC32 in the filename matches the calculated value → prints match (green)
  • If it doesn't match → prints not match (red) and shows the correct hash
  • If no CRC32 is found in the filename → prints the calculated CRC with the correct hash

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Logs for each mkvmerge run are saved in logs/log-YYYY-MM-DD.log.

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🧰 Requirements

• Python 3.7+

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📝 License

MIT License – Use freely for personal or commercial projects.

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