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Cut a MP3 file in Python

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An MP3 file is an audio file that uses a compression algorithm to reduce the overall file size. In this article, we will learn how to cut a particular portion of an MP3 file in Python. 

Here we will first open the mp3 audio then slice the audio with Python code and save the result. Before we go forward, we need to install FFmpeg in your system as it is required to deal with mp3 files to download you can visit this site: https://phoenixnap.com/kb/ffmpeg-windows. Also, we will use pydub library to perform this task. we can install pydub using pip.

pip install pydub

Step 1: Open an mp3 file using pydub.

Python3




from pydub import AudioSegment
  
song = AudioSegment.from_mp3("test.mp3")


Step 2: Slice audio

Python3




# pydub does things in milliseconds
ten_seconds = 10 * 1000
  
first_10_seconds = song[:ten_seconds]
  
last_5_seconds = song[-5000:]


Step 3: Save the results as a new file in mp3 audio format.

Python3




first_10_seconds.export("new.mp3", format="mp3")


Example 1

Directory Structure before running code:

cut a particular portion of an MP3 file in Python

 

Here we will cut the first 10 seconds of the audio file. 

Python3




from pydub import AudioSegment
  
# Open an mp3 file
song = AudioSegment.from_file("testing.mp3",
                              format="mp3")
  
# pydub does things in milliseconds
ten_seconds = 10 * 1000
  
# song clip of 10 seconds from starting
first_10_seconds = song[:ten_seconds]
  
# save file
first_10_seconds.export("first_10_seconds.mp3",
                        format="mp3")
print("New Audio file is created and saved")


Output:

cut a particular portion of an MP3 file in Python

 

Directory Structure after running code:

cut a particular portion of an MP3 file in Python

 

Example 2

Directory Structure before running code:

cut a particular portion of an MP3 file in Python

 

Here we will cut the last 15 seconds of the audio file.

Python3




from pydub import AudioSegment
  
# Open an mp3 file
song = AudioSegment.from_file("testing.mp3",
                              format="mp3")
  
# pydub does things in milliseconds
fifteen_seconds = 15 * 1000
  
# song clip of 10 seconds from starting 
first_10_seconds = song[-fifteen_seconds : ]
  
# save file 
first_10_seconds.export("last_15_seconds.mp3", format="mp3")
print("New Audio file is created and saved")


Output:

cut a particular portion of an MP3 file in Python

 

Directory Structure after running code.

cut a particular portion of an MP3 file in Python

 

Example 3:

Directory Structure before running code:

cut a particular portion of an MP3 file in Python

 

Here we will cut the mid portion of the audio file.

Python3




from pydub import AudioSegment
  
# Open an mp3 file
song = AudioSegment.from_file("testing.mp3"
                              format="mp3")
  
# start and end time
start_min = 1
start_sec = 10
end_min = 2
end_sec = 5
  
# pydub does things in milliseconds, so convert time
start = ((start_min*60)+start_sec)*1000
end = ((end_min*60)+end_sec)*1000
  
# song clip of 10 seconds from starting
first_10_seconds = song[start: end]
  
# save file
first_10_seconds.export("Mid.mp3", format="mp3")
print("New Audio file is created and saved")


Output:

cut a particular portion of an MP3 file in Python

 

Directory Structure after running code.

cut a particular portion of an MP3 file in Python

 



Last Updated : 23 Jan, 2023
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