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I would like to hear Linus' talk about Git from youtube on my way to work, which means I'm looking for an elegant way to extract .wav or .mp3 from a YouTube video.

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11 Answers 11

up vote 10 down vote accepted

I have had success with video2mp3.net – it is free and online!

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can we trust this java applet? –  endolith Jul 14 '12 at 23:18

Add the YouTube to MP3 firefox add-on.

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I used the Online FLV convertor for this . Just give the url and select way of output you want .

alt text

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My comment got deleted :S I was going to say that I tried this site earlier and gave link, however mp3 mode returned a 0 byte file and in AVI mode it had only pictures and no sound so I changed my link to the other one... Hopefully it will be fixed soon. –  William Hilsum Aug 7 '09 at 12:57
    
I had a similar problem as Wil with this and other sites too. The one that eventually worked for me was the one mentioned in the accepted answer. –  Fuzzy Purple Monkey Nov 2 '09 at 14:16
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This is not an online service anymore? It's downloadable software Vixy Freecorder? –  endolith Jul 14 '12 at 23:20

install Youtube-dl and FFmpeg then use the following commandline

Download the video

youtube-dl http://www.youtube.com/watch?v=YOURVIDEO 

Then convert the video using ffmpeg

ffmpeg -i YOURVIDEO.flv .wav
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mplayer x.flv -vo null -ao pcm
lame -V2 audiodump.wav talk.mp3

This will extract the audio in wav format and encode it to a VBR mp3 with lame.

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Youtube Downloader

It includes a video>audio converter.

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In Safari 6 for OS X you can open the video from the web inspector and download it by pressing ⌥↩ on the location bar.

  1. Enable the develop menu from the advanced preferences
  2. Press ⌥⌘I and open or reload the page for the video
  3. Double-click the videoplayback resource under the other folder
  4. Focus the location bar and press ⌥↩ (option-return)

You can extract the audio without re-encoding with ffmpeg. It can be installed with Homebrew.

ffmpeg -i video.mp4 -acodec copy sound.aac
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Here's my review on YouTube to audio converters.


video2mp3 comes in first, closely followed by abcyoutube. Both cache popular videos, so there's 0 conversion time.

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This answer was originally intended to another question (that got merged into this question), where the user was the owner of the videos. This will not work if you don't own the videos yourself.

  1. Go to http://www.youtube.com/my_videos,
  2. Click on the down arrow besides the video title
  3. choose "download as MP4" (or other file format if applies)
  4. use software installed on your computer to extract the audio from the file

(I don't own a mac, so I can't recommend a mac software for this final step).

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VDownloader

The reviewers didn't find anything against it.

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I don't trust the software like vixy.net, I think they track all my youtube activity.

convert2mp3.net is my favorite now, they converted a rare video (so the video wasn't cached) to mp3 in less than one minute.

listentoyoutube.com needed ca. 5-6 minutes for the same video.

video2mp3.net needed more than two hours to extract the sound from the same video and they want to accept a java applet.

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protected by Diago Sep 21 '10 at 18:15

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