pyNCMDUMP

This is a simple commandline tool that helps you convert an encrypted .ncm file into its original, more commonly seen audio types (e.g. flac and mp3).

Dependencies

Python3
TQDM package, which can be installed through pip3 install tqdm
PyCrypto package, which can be installed through pip3 install pycrypto

Usage

The usage would require basic knowledge of running Python3 in a terminal (long/short arguments are inter-changable in examples below):

$ python3 ncmdump.py --help


  usage: ncmdump.py [-h] [-w] paths [paths ...]

  pyNCMDUMP command-line interface

  positional arguments:
    paths            one or more paths to source files

  optional arguments:
    -h, --help       show this help message and exit
    -w , --workers   parallel convertion when set to more than 1 workers (default: 1)

Example of single-worker mode (default):

$ python ncmdump.py A b.ncm


  INFO [2022-10-03 21:13:30] 
  INFO [2022-10-03 21:13:30]            _  _  ___ __  __ ___  _   _ __  __ ___
  INFO [2022-10-03 21:13:30]  _ __ _  _| \| |/ __|  \/  |   \| | | |  \/  | _ \
  INFO [2022-10-03 21:13:30] | '_ \ || | .` | (__| |\/| | |) | |_| | |\/| |  _/
  INFO [2022-10-03 21:13:30] | .__/\_, |_|\_|\___|_|  |_|___/ \___/|_|  |_|_|  
  INFO [2022-10-03 21:13:30] |_|   |__/                                        
  INFO [2022-10-03 21:13:30]                     pyNCMDUMP                     
  INFO [2022-10-03 21:13:30]     https://github.com/allenfrostline/pyNCMDUMP  
  INFO [2022-10-03 21:13:30] 
  INFO [2022-10-03 21:13:30] Running pyNCMDUMP on single-worker mode
  INFO [2022-10-03 21:13:30] Converting "A/a1.ncm"                                                                                                  
  INFO [2022-10-03 21:13:32] Converted file saved at "a1.mp3"                                                                                                   
  INFO [2022-10-03 21:13:32] Converting "A/a2.ncm"                                                                                                      
  INFO [2022-10-03 21:13:35] Converted file saved at "a2.mp3"                                                                                                       
  INFO [2022-10-03 21:13:35] Converting "A/a3.ncm"                                                                                                         
  INFO [2022-10-03 21:13:38] Converted file saved at "a3.mp3"                                                                                                          
  INFO [2022-10-03 21:13:38] Converting "A/a4.ncm"                                                                                               
  INFO [2022-10-03 21:13:45] Converted file saved at "a4.flac"                                                                                               
  INFO [2022-10-03 21:13:45] Converting "b.ncm"                                                                                                                            
  INFO [2022-10-03 21:13:56] Converted file saved at "b.flac"                                                                                                              
  INFO [2022-10-03 21:13:56] All finished

Example of parallel mode using 4 workers:

$ python ncmdump.py A b.ncm --workers 4


  INFO [2022-10-03 21:14:04] 
  INFO [2022-10-03 21:14:04]            _  _  ___ __  __ ___  _   _ __  __ ___
  INFO [2022-10-03 21:14:04]  _ __ _  _| \| |/ __|  \/  |   \| | | |  \/  | _ \
  INFO [2022-10-03 21:14:04] | '_ \ || | .` | (__| |\/| | |) | |_| | |\/| |  _/
  INFO [2022-10-03 21:14:04] | .__/\_, |_|\_|\___|_|  |_|___/ \___/|_|  |_|_|  
  INFO [2022-10-03 21:14:04] |_|   |__/                                        
  INFO [2022-10-03 21:14:04]                     pyNCMDUMP                     
  INFO [2022-10-03 21:14:04]     https://github.com/allenfrostline/pyNCMDUMP  
  INFO [2022-10-03 21:14:04] 
  INFO [2022-10-03 21:14:04] Running pyNCMDUMP with up to 4 parallel workers
  INFO [2022-10-03 21:14:04] Converting "A/a1.ncm"
  INFO [2022-10-03 21:14:04] Converting "A/a2.ncm"
  INFO [2022-10-03 21:14:04] Converting "A/a4.ncm"
  INFO [2022-10-03 21:14:04] Converting "A/a3.ncm"
  INFO [2022-10-03 21:14:07] Converted file saved at "a1.mp3"
  INFO [2022-10-03 21:14:07] Converting "b.ncm"
  INFO [2022-10-03 21:14:07] Converted file saved at "a3.mp3"
  INFO [2022-10-03 21:14:07] Converted file saved at "a2.mp3"
  INFO [2022-10-03 21:14:11] Converted file saved at "a4.flac"
  INFO [2022-10-03 21:14:17] Converted file saved at "b.flac"
  INFO [2022-10-03 21:14:17] All finished

Credit to anonymous5l, who wrote the original version of ncmdump in C++.