cao0220 / pyncmdump

Python3 version of ncmdump, which converts ".ncm" files into ".flac" and ".mp3" etc.

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++.