This is a script that I use to rename my youtube-dl downloaded files. I just remove the extra ids at the end and rename with appropriate extension

renameFile.py

# /usr/bin/env python

# ensure that you run the script in the folder containing
# the files to be renamed

import os
for filename in os.listdir("."):
    # split the file name into 3 parts
    # normal filename looks like this for mp3
    # 'Born Again - Third Day-4m_dP2n-5W8.mp3'
    split_val = filename.split('-')
    print split_val
    
    # concatenate the new name
    # my extension is .mp3 so I append that
    new_name = "%s-%s.mp3" % (split_val[0], split_val[1])
    print new_name
    
    # rename the file
    os.rename(filename, new_name)