How to Download YouTube Videos as MP3 Files Using Python
Do you enjoy listening to music from YouTube, but wish you could save it offline as MP3 files? Do you want to learn how to use Python to download and trim audio files from YouTube URLs? If so, this article is for you.
In this article, you will learn how to use two Python libraries, YouTube-dl and Pydub, to download YouTube videos as MP3 files. You will also learn how to convert and trim audio files using these libraries. By the end of this article, you will be able to create your own Python script to download and edit audio files from YouTube with ease.
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Introduction
What is YouTube-dl and why use it?
YouTube-dl is a free, open-source command-line program that you can use to download videos from YouTube and other websites. It supports a wide range of formats, options, and features. You can use it to download videos in different resolutions, extract audio tracks, embed subtitles, and more.
One of the reasons why you might want to use YouTube-dl is that it allows you to download only the audio from YouTube videos, which can save you bandwidth and storage space. You can also use it to convert the downloaded audio files to MP3 format, which is widely supported by most devices and players.
What is Pydub and why use it?
Pydub is a Python library that allows you to manipulate audio files with a simple and intuitive interface. You can use it to perform various operations on audio files, such as slicing, concatenating, fading, reversing, overlaying, and more.
One of the reasons why you might want to use Pydub is that it allows you to trim audio files with ease. You can specify the start and end times of the segments you want to keep or remove, and Pydub will do the rest. You can also use Pydub to adjust the volume, speed, pitch, and other parameters of the audio files.
Method 1: Using YouTube-dl
How to install YouTube-dl
The easiest way to install YouTube-dl is by using pip, the Python package manager. You can run the following command in your terminal or command prompt:
pip install youtube-dl
If you are on Linux or Mac, you might need to add sudo before the command. If you are on Windows, you might need to run the command prompt as administrator.
You can also download the latest version of YouTube-dl from its official website or GitHub repository and run it as a standalone executable.
How to download audio from YouTube URLs using YouTube-dl
To download audio from YouTube URLs using YouTube-dl, you need to import the youtube_dl module and create a dictionary of options for the YoutubeDL class. The options specify the format, quality, and post-processing of the downloaded audio files. For example, you can use the following options:
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ydl_opts = 'format': 'bestaudio/best', # download the best quality audio 'postprocessors': [ 'key': 'FFmpegExtractAudio', # extract audio from video 'preferredcodec': 'mp3', # convert to mp3 format 'preferredquality': '192', # set bitrate ],
Then, you need to create an instance of the YoutubeDL class with the options and call the download method with a list of YouTube URLs. For example, you can use the following code:
import youtube_dl ydl_opts = 'format': 'bestaudio/best', # download the best quality audio 'postprocessors': [ 'key': 'FFmpegExtractAudio', # extract audio from video 'preferredcodec': 'mp3', # convert to mp3 format 'preferredquality': '192', # set bitrate ], with youtube_dl.YoutubeDL(ydl_opts) as ydl: ydl.download([' # download Gangnam Style as mp3
This will download the audio from the YouTube URL and save it as an MP3 file in the same folder as your Python script. You can also use a loop to download multiple URLs at once.
How to convert audio files to MP3 format using YouTube-dl
If you already have some audio files that you want to convert to MP3 format, you can use YouTube-dl to do that as well. You just need to change the options to specify the input and output formats. For example, you can use the following options:
ydl_opts = 'format': 'wav', # input format 'postprocessors': [ 'key': 'FFmpegExtractAudio', # extract audio from video 'preferredcodec': 'mp3', # output format 'preferredquality': '192', # set bitrate ],
Then, you need to pass the paths of the audio files as arguments to the download method. For example, you can use the following code:
import youtube_dl ydl_opts = 'format': 'wav', # input format 'postprocessors': [ 'key': 'FFmpegExtractAudio', # extract audio from video 'preferredcodec': 'mp3', # output format 'preferredquality': '192', # set bitrate ], with youtube_dl.YoutubeDL(ydl_opts) as ydl: ydl.download(['song.wav']) # convert song.wav to song.mp3
This will convert the WAV file to an MP3 file and save it in the same folder as your Python script. You can also use a loop to convert multiple files at once.
Method 2: Using Pydub
How to install Pydub
The easiest way to install Pydub is by using pip, the Python package manager. You can run the following command in your terminal or command prompt:
pip install pydub
If you are on Linux or Mac, you might need to add sudo before the command. If you are on Windows, you might need to run the command prompt as administrator.
You also need to install FFmpeg, a cross-platform tool that can handle various audio and video formats. You can download it from its official website or use a package manager such as Homebrew or Chocolatey.
How to download audio from YouTube URLs using Pydub
To download audio from YouTube URLs using Pydub, you need to import the pydub module and use the AudioSegment class. The AudioSegment class can load and save audio files in various formats, such as MP3, WAV, OGG, and more.
You also need to use another Python library, requests, to send HTTP requests and get the content of the YouTube URLs. You can install requests by using pip:
pip install requests
Then, you need to use the get method of requests to get the response object of the YouTube URL and pass it to the from_file method of AudioSegment. You can specify the format of the audio file as an argument. For example, you can use the following code:
import requests import pydub response = requests.get(' # get response object of Gangnam Style URL audio = pydub.AudioSegment.from_file(response.content, format='mp4') # load audio from response content as mp4 format
This will load the audio from the YouTube URL as an AudioSegment object. You can then use the export method of AudioSegment to save it as an MP3 file. For example, you can use the following code:
audio.export('song.mp3', format='mp3') # save audio as song.mp3 in mp3 format
This will save the audio as an MP3 file in the same folder as your Python script. You can also use a loop to download and save multiple URLs at once.
How to trim audio files using Pydub
If you want to trim audio files using Pydub, you can use the slicing operator on the AudioSegment objects. You can specify the start and end times of the segments you want to keep or remove in milliseconds. For example, you can use the following code:
import pydub audio = pydub.AudioSegment.from_mp3('song.mp3') # load audio from song.mp3 trimmed_audio = audio[10000:20000] # keep only the segment from 10 seconds to 20 seconds trimmed_audio.export('trimmed_song.mp3', format='mp3') # save trimmed audio as trimmed_song.mp3
This will trim the audio file and save it as a new MP3 file. You can also use the fade_in and fade_out methods of AudioSegment to add fading effects to the trimmed audio. For example, you can use the following code:
import pydub audio = pydub.AudioSegment.from_mp3('song.mp3') # load audio from song.mp3 trimmed_audio = audio[10000:20000] # keep only the segment from 10 seconds to 20 seconds faded_audio = trimmed_audio.fade_in(1000).fade_out(1000) # add 1 second fade in and fade out effects faded_audio.export('faded_song.mp3', format='mp3') # save faded audio as faded_song.mp3
This will add fading effects to the trimmed audio and save it as a new MP3 file. You can also use other methods of AudioSegment to manipulate the audio files, such as overlay, reverse, speedup, and more.
Conclusion
Summary of the main points
In this article, you learned how to download YouTube videos as MP3 files using Python. You learned how to use two Python libraries, YouTube-dl and Pydub, to download and trim audio files from YouTube URLs. You also learned how to convert and edit audio files using these libraries.
Benefits of downloading YouTube videos as MP3 files using Python
Downloading YouTube videos as MP3 files using Python has many benefits, such as:
You can save your favorite music from YouTube offline and listen to it anytime, anywhere.
You can reduce the size and bandwidth of the downloaded files by choosing only the audio and converting it to MP3 format.
You can customize and edit the audio files according to your preferences and needs by using Pydub.
You can learn and practice Python skills by creating your own script to download and edit audio files from YouTube.
Call to action and resources
If you are interested in learning more about YouTube-dl and Pydub, you can check out their official documentation and GitHub repositories:
[YouTube-dl documentation]
[YouTube-dl GitHub repository]
[Pydub documentation]
[Pydub GitHub repository]
You can also find more tutorials and examples on how to use these libraries online. For example, you can check out these articles:
[How to Download YouTube Videos in Python]
[How to Edit Audio Files in Python]
We hope you enjoyed this article and learned something new. If you have any questions or feedback, please leave a comment below. Happy coding!
FAQs
Q: How can I download YouTube videos as MP4 files using Python?
A: You can use YouTube-dl to download YouTube videos as MP4 files by changing the format option to 'bestvideo+bestaudio/best'. For example:
ydl_opts = 'format': 'bestvideo+bestaudio/best', # download the best quality video and audio with youtube_dl.YoutubeDL(ydl_opts) as ydl: ydl.download([' # download Gangnam Style as mp4
Q: How can I download a playlist or a channel from YouTube using Python?
A: You can use YouTube-dl to download a playlist or a channel from YouTube by passing the URL of the playlist or channel as an argument to the download method. For example: with youtube_dl.YoutubeDL(ydl_opts) as ydl: ydl.download([' # download Python Tutorial playlist as mp3
Q: How can I download YouTube videos with subtitles using Python?
A: You can use YouTube-dl to download YouTube videos with subtitles by adding the writeautomaticsub and subformat options to the options dictionary. For example:
ydl_opts = 'format': 'bestaudio/best', # download the best quality audio 'postprocessors': [ 'key': 'FFmpegExtractAudio', # extract audio from video 'preferredcodec': 'mp3', # convert to mp3 format 'preferredquality': '192', # set bitrate ], 'writeautomaticsub': True, # download automatic subtitles 'subformat': 'vtt', # set subtitle format with youtube_dl.YoutubeDL(ydl_opts) as ydl: ydl.download([' # download Gangnam Style as mp3 with subtitles
This will download the audio and the subtitles from the YouTube video and save them as separate files in the same folder as your Python script. You can also specify the language of the subtitles by using the sublang option.
Q: How can I merge multiple audio files into one using Python?
A: You can use Pydub to merge multiple audio files into one by using the + operator on the AudioSegment objects. For example:
import pydub audio1 = pydub.AudioSegment.from_mp3('song1.mp3') # load audio from song1.mp3 audio2 = pydub.AudioSegment.from_mp3('song2.mp3') # load audio from song2.mp3 merged_audio = audio1 + audio2 # merge audio1 and audio2 merged_audio.export('merged_song.mp3', format='mp3') # save merged audio as merged_song.mp3
This will merge the two audio files and save them as a new MP3 file. You can also use a loop to merge multiple files at once.
Q: How can I add metadata to MP3 files using Python?
A: You can use Pydub to add metadata to MP3 files by using the tags keyword argument of the export method. For example:
import pydub audio = pydub.AudioSegment.from_mp3('song.mp3') # load audio from song.mp3 metadata = 'title': 'My Song', 'artist': 'My Artist', 'album': 'My Album', 'genre': 'My Genre', # create a dictionary of metadata audio.export('song_with_metadata.mp3', format='mp3', tags=metadata) # save audio with metadata as song_with_metadata.mp3
This will add the metadata to the MP3 file and save it as a new file. You can also use other libraries such as mutagen or eyed3 to edit metadata of MP3 files. 44f88ac181
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