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ontherooftop
July 22nd, 2008, 01:47 AM
I have tried recording tracks from you tube on audacity and
I recorded it and it seems to say check input output and something
else in configuration can someone help me step by step to record
audio( I dont have a mic) record audio from my soundcard on my computer
and make a audio or mp3 file from it , Thanks. first time trying audacity.

ice60
July 22nd, 2008, 02:01 AM
did you try looking at youtube? i watched the first 20 seconds or so of this one and it looks like he's doing what you want!
http://www.youtube.com/watch?v=f9_pSLG0LZQ

there are online services that will extract the mp3 for you too, like
http://vixy.net/
http://www.listentoyoutube.com/

stmiller
July 22nd, 2008, 06:19 AM
It is possible in Linux to record internally from one source to another. No need for a mic and static noise. The software that does this is jack. Install qjackctl for a gui.

jpkotta
July 22nd, 2008, 06:55 AM
The flash player will download the videos to /tmp. They're named randomly, e.g. FlashDlna4t. You can play them with mplayer (and others I would suppose). If you can play them, there is a way to extract the audio. You can do it with avidemux, I just tried. The one I tried used mp3 for the audio (avidemux will tell you this).

heiNey
August 7th, 2008, 05:15 AM
i just tried this and avidemux says it cant open the file

eightmillion
August 7th, 2008, 05:20 AM
You can use mplayer to dump the audio:

mplayer -dumpaudio input.flv -dumpfile output.mp3

heiNey
August 7th, 2008, 05:28 AM
cool that worked..thanks...is there a way to specify a bitrate? it comes out at 64kbps...or is that the best that youtube videos can be encoded at?

eightmillion
August 7th, 2008, 05:32 AM
Generally the audio from youtube videos is low bitrate. You can dump and reencode at the same time with ffmpeg although I don't think it provides any real quality differences.

ffmpeg -i input.flv -ab 128 -ar 44100 output.mp3