pydubModule to Convert MP3 to WAV in Python
subprocessModule to Convert MP3 to WAV in Python
MP3 is a coding format developed mainly by the Fraunhofer Society in Germany. MP3 file uses a compression algorithm which helps to reduce the overall file size.
A WAV file format is an audio file format that uses containers that store audio data, numerical data, bit rate, and sample rate. These files are uncompressed audio files but can take quite a bit of space.
We will introduce how to convert MP3 to WAV format in Python in this tutorial.
pydub Module to Convert MP3 to WAV in Python
We can use the open-source library called
pydub to carry out this conversion. It is a high-level yet straightforward interface that can open several multimedia audio and video formats and manipulate them.
We will read the MP3 file using the
from_mp3() function. We will then export this file using the
export() function, where we will specify the format as
wav in the
from pydub import AudioSegment # files src = "transcript.mp3" dst = "test.wav" # convert wav to mp3 audSeg = AudioSegment.from_mp3("transcript.mp3") audSeg.export(dst, format="wav")
subprocess Module to Convert MP3 to WAV in Python
subprocess module creates new processes to run different applications. We can use the
call() function from this module to perform the necessary conversion. The output from this function is redirected directly to the files.
See the following code.
import subprocess subprocess.call(['ffmpeg', '-i', 'transcript.mp3', 'test.wav'])
pydub module does the same thing, but essentially in the background.