Downloading a youtube video and extracting only the audio

[komputes]

Try an FLV produced by Download Helper, then bring it into avidemux or 
audacity to take the audio.

Download Helper - https://addons.mozilla.org/en-US/firefox/addon/3006
avidemux/audacity can be found in the ubuntu repositories (Add/Remove or 
sudo apt-get install <package>)

k

Chris Lemire wrote:
> I succesfully downloaded a youtube video in .flv
>  format after lots of googling. However following
>  directions to extract the audio has not worked
>  for me with no obvious reasons to me why. I checked
>  the video I download with VLC. It does have
>  audio.
>
> Here's what I've tried to extract the audio. On
>  other places on the net, I saw the same two
>  commands working for others. Here's the video.
>
> http://www.youtube.com/watch?v=Ejb8QOyjz-E&
>
> In order to get the video.flv, I did some tricky
>  stuff with wget I found from google that worked!
>  I just wished extracting the audio was as easy.
>  Here's how I did it.
>
> http://www.go2linux.org/wget-to-download-youtube-videos
>
> Attempt #1
>
>
> [chris at localhost tmp]$ mplayer -dumpaudio
>  video.flv 
>  MPlayer 1.0rc2-4.1.2 (C) 2000-2007 MPlayer Team
>  CPU: AMD Athlon(tm) 64 X2 Dual Core Processor
>  3800+ (Family: 15, Model: 43, Stepping: 1)
>  CPUflags:  MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1
>  SSE: 1 SSE2: 1
>  Compiled with runtime CPU detection.
>  mplayer: could not connect to socket
>  mplayer: No such file or directory
>  Failed to open LIRC support. You will not be
>  able to use your remote control.
>  
>  Playing video.flv.
>  libavformat file format detected.
>  [lavf] Video stream found, -vid 0
>  [lavf] Audio stream found, -aid 1
>  VIDEO:  [FLV1]  320x240  0bpp  25.000 fps    0.0
>  kbps ( 0.0 kbyte/s)
>  Core dumped ;)
>  
>  Exiting... (End of file)
>  [chris at localhost tmp]$
>
> Attempt #2
>
>
> [root at localhost tmp]# ffmpeg -i video.flv -f mp3
>  -vn -acodec copy carsounds2.mp3 
> FFmpeg version SVN-r10703, Copyright (c)
>  2000-2007 Fabrice Bellard, et al.
>   configuration: --prefix=/usr
>  --incdir=/usr/include/ffmpeg --libdir=/usr/lib64
>  --shlibdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64
>  --extra-cflags=-O2 -g -pipe -Wall
>  -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector
>  --param=ssp-buffer-size=4 -m64 -mtune=generic --enable-liba52
>  --enable-libfaac --enable-libfaad --enable-libgsm
>  --enable-libmp3lame --enable-libogg
>  --enable-libtheora --enable-libvorbis --enable-libxvid
>  --enable-libx264 --enable-pp --enable-pthreads
>  --disable-static --enable-shared --enable-gpl
>  --disable-debug --disable-opts --disable-strip
>   libavutil version: 49.5.0
>   libavcodec version: 51.45.0
>   libavformat version: 51.14.0
>   built on Oct 18 2007 03:18:27, gcc: 4.1.2
>  20070925 (Red Hat 4.1.2-31)
>
> Seems stream 0 codec frame rate differs from
>  container frame rate: 1000.00 (1000/1) -> 25.00
>  (25/1)
> Input #0, flv, from 'video.flv':
>   Duration: 00:09:58.7, start: 0.000000, bitrate:
>  56 kb/s
>   Stream #0.0: Video: flv, yuv420p, 320x240,
>  25.00 fps(r)
>   Stream #0.1: Audio: mp3, 22050 Hz, mono, 56
>  kb/s
> Output #0, mp3, to 'carsounds2.mp3':
>   Stream #0.0: Audio: libmp3lame, 22050 Hz, mono,
>  56 kb/s
> Stream mapping:
>   Stream #0.1 -> #0.0
> Press [q] to stop encoding
> size=    4188kB time=598.8 bitrate=  57.3kbits/s
>     
> video:0kB audio:4188kB global headers:0kB muxing
>  overhead 0.000746%
> [root at localhost tmp]#
>
> HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
> Thank you.
>
>
> Christopher Lemire <christopher.lemire at gmail.com>
>
> SKYPE:	fakie_flip
> AIM:	good bye300
> IRC:	linux_user400354
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>        
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