Extract audio from online video

Using the youtube-dl command line application you can download videos and directly extract the audio of the video in various formats.

youtube-dl supports a large variety of online video hosts, including:

  • youtube.com
  • 9gag.com
  • crunchyroll.com
  • dailymotion.com
  • southparkstudios.com

Note: Please be sure that you are allowed to download a video before you do that, many of these hosts do not expect that you will be downloading their videos as they do not allow that.

The following command, will download a video, convert it to an mp3 and delete the original video:

youtube-dl --extract-audio --audio-format mp3 https://www.youtube.com/watch?v=cwI-n3sI8ec

If you want to keep the original video, you just add the parameter -k or --keep-video.

The --audio-format parameter accepts other types of audio format outputs, specifically it supports

youtube-dl is a very powerful tool, advice the documentation for some of the great features it supports.


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