From e8362cda38a61396c46c572d00f14140ca876059 Mon Sep 17 00:00:00 2001
From: DarkSun <lujun9972@gmail.com>
Date: Fri, 20 Aug 2021 05:02:26 +0800
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 =?UTF-8?q?=20Download=20Audio=20Only=20Using=20youtube-dl?=
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+[#]: subject: "How to Download Audio Only Using youtube-dl"
+[#]: via: "https://itsfoss.com/youtube-dl-audio-only/"
+[#]: author: "Abhishek Prakash https://itsfoss.com/author/abhishek/"
+[#]: collector: "lujun9972"
+[#]: translator: " "
+[#]: reviewer: " "
+[#]: publisher: " "
+[#]: url: " "
+
+How to Download Audio Only Using youtube-dl
+======
+
+[youtube-dl][1] is a versatile command line tool for downloading videos from YouTube and many other websites. I use it for making back up of my own YouTube videos.
+
+By default, you [use youtube-dl for downloading videos][2]. How about extracting only the audio with youtubde-dl? That’s very simple actually. Let me show you the steps.
+
+Attention
+
+Downloading videos from websites could be against their policies. It’s up to you if you choose to download videos or audio.
+
+### Download only audio with youtube-dl
+
+Please make sure that you have installed youtube-dl on your Linux distribution first.
+
+```
+sudo snap install youtube-dl
+```
+
+If you only want to download audio from a YouTube video, you can use the -x option with youtube-dl. This extract-audio option converts the video files to audio-only files.
+
+```
+youtube-dl -x video_URL
+```
+
+The file is saved in the same directory from where you ran the youtube-dl command.
+
+Here’s an example where I downloaded the voice-over of our Zorin OS 16 review video.
+
+```
+youtube-dl -x https://www.youtube.com/watch?v=m_PmLG7HqbQ
+[youtube] m_PmLG7HqbQ: Downloading webpage
+[download] Destination: Zorin OS 16 Review - It's a Visual Masterpiece-m_PmLG7HqbQ.m4a
+[download] 100% of 4.26MiB in 00:03
+[ffmpeg] Correcting container in "Zorin OS 16 Review - It's a Visual Masterpiece-m_PmLG7HqbQ.m4a"
+[ffmpeg] Post-process file Zorin OS 16 Review - It's a Visual Masterpiece-m_PmLG7HqbQ.m4a exists, skipping
+```
+
+Did you notice the audio format? It is in .m4a format. You may specify the audio format to something of your choice.
+
+Say you want to extract the audio in MP3 format. You can use it like this:
+
+```
+youtube-dl -x --audio-format mp3 video_URL
+```
+
+Here’s the same example I showed previously. You can see that it [uses ffmpeg to convert][3] the m4a file into mp3.
+
+```
+youtube-dl -x --audio-format mp3 https://www.youtube.com/watch?v=m_PmLG7HqbQ
+[youtube] m_PmLG7HqbQ: Downloading webpage
+[download] Zorin OS 16 Review - It's a Visual Masterpiece-m_PmLG7HqbQ.m4a has already been downloaded
+[download] 100% of 4.26MiB
+[ffmpeg] Correcting container in "Zorin OS 16 Review - It's a Visual Masterpiece-m_PmLG7HqbQ.m4a"
+[ffmpeg] Destination: Zorin OS 16 Review - It's a Visual Masterpiece-m_PmLG7HqbQ.mp3
+Deleting original file Zorin OS 16 Review - It's a Visual Masterpiece-m_PmLG7HqbQ.m4a (pass -k to keep)
+```
+
+### Download entire YouTube playlist in MP3 format
+
+Yes, you can totally do that. The main thing is to get the URL of the playlist here. It is typically in the following format:
+
+```
+https://www.youtube.com/playlist?list=XXXXXXXXXXXXXXXXXXX
+```
+
+To get the URL of a playlist, click on its name when the playlist is being displayed in the right sidebar.
+
+![Click on the playlist title][4]
+
+It will take you to the playlist page and you can copy the URL here.
+
+![Grab the playlist URL][5]
+
+Now that you have the playlist URL, you can use it to download the audio files in MP3 format in the following fashion:
+
+```
+youtube-dl --extract-audio --audio-format mp3 -o "%(title)s.%(ext)s" playlist_URL
+```
+
+That scary looking `-o "%(title)s.%(ext)s"` specifies the output file (with option -o) and instructs it to use the title of the video and the extension (mp3 in this case) for naming the audio files.
+
+![][6]
+
+I hope you find this quick tip helpful. Enjoy the audio files :)
+
+--------------------------------------------------------------------------------
+
+via: https://itsfoss.com/youtube-dl-audio-only/
+
+作者：[Abhishek Prakash][a]
+选题：[lujun9972][b]
+译者：[译者ID](https://github.com/译者ID)
+校对：[校对者ID](https://github.com/校对者ID)
+
+本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
+
+[a]: https://itsfoss.com/author/abhishek/
+[b]: https://github.com/lujun9972
+[1]: https://github.com/ytdl-org/youtube-dl
+[2]: https://itsfoss.com/download-youtube-linux/
+[3]: https://itsfoss.com/ffmpeg/
+[4]: https://i1.wp.com/itsfoss.com/wp-content/uploads/2021/08/getting-youtube-playlist-url.png?resize=797%2C366&ssl=1
+[5]: https://i1.wp.com/itsfoss.com/wp-content/uploads/2021/08/youtube-playlist-url.png?resize=800%2C388&ssl=1
+[6]: https://i0.wp.com/itsfoss.com/wp-content/uploads/2021/08/downloading-youtube-playlist-audio.png?resize=800%2C559&ssl=1