--audio-format=mp3 leads to encoder failure

[ghost]

I have been trying to use --audio-format=mp3 in order to create an mp3 from various youtube videos with the following result:

$ youtube-dl --extract-audio -t --audio-format=mp3 --console-title "https://www.youtube.com/watch?v=RJ2Xi3e1xzE"
[youtube] Setting language
[youtube] RJ2Xi3e1xzE: Downloading video webpage
[youtube] RJ2Xi3e1xzE: Downloading video info webpage
[youtube] RJ2Xi3e1xzE: Extracting video information
[download] Destination: Dave_Pearce_-_Now_We_Are_Free_Remix-RJ2Xi3e1xzE.flv
[download] 100.0% of 7.85M at   54.26k/s ETA 00:00
[ffmpeg] Destination: Dave_Pearce_-_Now_We_Are_Free_Remix-RJ2Xi3e1xzE.mp3
ERROR: audio conversion failed: Unknown encoder 'libmp3lame'

And a different one:

$ youtube-dl -v --extract-audio -t --audio-format=mp3 --console-title "https://www.youtube.com/watch?v=r0E-0ntoNWo"
[debug] Proxy map: {}
[youtube] Setting language
[youtube] r0E-0ntoNWo: Downloading video webpage
[youtube] r0E-0ntoNWo: Downloading video info webpage
[youtube] r0E-0ntoNWo: Extracting video information
[download] Resuming download at byte 5241856
[download] Destination: Mocha_in_His_First_Broccoli-r0E-0ntoNWo.flv
[download] 100.0% of 7.35M at    6.10M/s ETA 00:00
[ffmpeg] Destination: Mocha_in_His_First_Broccoli-r0E-0ntoNWo.mp3
ERROR: audio conversion failed: Unknown encoder 'libmp3lame'

mp3lame is installed:

$ locate libmp3lame
/usr/local/lib/libmp3lame.a
/usr/local/lib/libmp3lame.la
/usr/local/lib/libmp3lame.so
/usr/local/lib/libmp3lame.so.0

Using the default format works fine:

$ youtube-dl -v --extract-audio -t --console-title "https://www.youtube.com/watch?v=r0E-0ntoNWo"
[debug] Proxy map: {}
[youtube] Setting language
[youtube] r0E-0ntoNWo: Downloading video webpage
[youtube] r0E-0ntoNWo: Downloading video info webpage
[youtube] r0E-0ntoNWo: Extracting video information
[download] Mocha_in_His_First_Broccoli-r0E-0ntoNWo.flv has already been downloaded
[ffmpeg] Destination: Mocha_in_His_First_Broccoli-r0E-0ntoNWo.aac

I am using:

FreeBSD 9.0 amd64
lame-3.99.4
youtube_dl-2012.02.27
python27-2.7.2_4

[VxJasonxV]

What about your ffmpeg version and available modules?

[ghost]

I just found out that ffmpeg isn't linked against lame. I rebuilt it with lame support and everything works as expected.

[reagle]

youtube-dl -o '%(stitle)s' --extract-audio http://www.youtube.com/watch?v=3XBN72tQEvk will give me a file called aac. Otherwise:

`youtube-dl -o '%(stitle)s' --extract-audio --audio-format=libmp3lame http://www.youtube.com/watch?v=3XBN72tQEvk
Usage: youtube-dl [options] url [url...]

youtube-dl: error: invalid audio format specified
`

[g2g]

youtube-dl -o '%(stitle)s' --extract-audio --audio-format mp3 http://www.youtube.com/watch?v=3XBN72tQEvk will only work if you install libmp3lame.
So, install this package (Debian flavour)
sudo apt-get install -y libavcodec-extra-53
Cheers,
Laurent.

[FiloSottile]

Also, in the -o must compare the extension, so -o '%(stitle)s.%(ext)s' is the correct option.

[andreas-e]

@g2g I doubt this will work on Debian.

I have Debian myself, and libavcodec-extra-53 will only provide the following (quoting):

This package is a replacement for the regular libavcodec53 library package; it contains the following additional codecs:

• OpenCORE Adaptive Multi-Rate (AMR) Narrow-Band (Encoder/Decoder)
• OpenCORE Adaptive Multi-Rate (AMR) Wide-Band (Decoder)
• Android VisualOn AAC (Encoder)

* Android VisualOn Adaptive Multi-Rate (AMR) Wide-Band (Encoder)

So on Debian you will neither win nor lose anything.

Your method, however, works fine on Ubuntu where the extra package actually does contain the mp3 codecs.

[markitics]

In case relevant, I'm running youtube-dl on a heroku django app.

This works for me to run on heroku server:

(1) in heroku config

BUILDPACK_URL:                https://github.com/ddollar/heroku-buildpack-multi.git

See http://blog.pogoapp.com/youtube-mp3-with-node-js-and-ffmpeg/ for instructions
This references the two buildpacks in .buildpacks
Note: this included lame support, but I got an ffprobe error until I edited requirements.txt (see step 3)

(2) in a file called .buildpacks (this sits in root, alongside files like .env and requirements.txt)

https://github.com/jayzes/heroku-buildpack-ffmpeg.git
https://github.com/heroku/heroku-buildpack-python.git

That's also from http://blog.pogoapp.com/youtube-mp3-with-node-js-and-ffmpeg/ for instructions
but I've put "python" for me instead of node. You can put ruby or other as required, see https://devcenter.heroku.com/articles/buildpacks#default-buildpacks

(3) in requirements.txt

youtube-dl==2014.09.25
ffprobe

Adding that ffprobe explicitly solved all mp3 codec errors

---

Now when I run heroku run bash:

.....$ heroku run bash
Running `bash` attached to terminal... up, run.4970
~ $ ffprobe
ffprobe version git-2013-08-02-b3f858b Copyright (c) 2007-2013 the FFmpeg developers
  built on Aug  2 2013 01:49:41 with gcc 4.4.3 (Ubuntu 4.4.3-4ubuntu5.1)
  configuration: --enable-shared --enable-gpl --enable-libmp3lame --enable-avfilter --disable-asm --prefix=/app/vendor/ffmpeg --extra-cflags='-I/app/vendor/x264/include -I/app/vendor/mp3lame/include' --extra-ldflags='-L/app/vendor/x264/lib -L/app/vendor/mp3lame/lib'
  libavutil      52. 40.100 / 52. 40.100
  libavcodec     55. 19.100 / 55. 19.100
  libavformat    55. 12.102 / 55. 12.102
  libavdevice    55.  3.100 / 55.  3.100
  libavfilter     3. 82.100 /  3. 82.100
  libswscale      2.  4.100 /  2.  4.100
  libswresample   0. 17.103 /  0. 17.103
  libpostproc    52.  3.100 / 52.  3.100
Simple multimedia streams analyzer
usage: ffprobe [OPTIONS] [INPUT_FILE]

You have to specify one input file.
Use -h to get full help or, even better, run 'man ffprobe'.
~ $ ffmpeg
ffmpeg version git-2013-08-02-b3f858b Copyright (c) 2000-2013 the FFmpeg developers
  built on Aug  2 2013 01:49:41 with gcc 4.4.3 (Ubuntu 4.4.3-4ubuntu5.1)
  configuration: --enable-shared --enable-gpl --enable-libmp3lame --enable-avfilter --disable-asm --prefix=/app/vendor/ffmpeg --extra-cflags='-I/app/vendor/x264/include -I/app/vendor/mp3lame/include' --extra-ldflags='-L/app/vendor/x264/lib -L/app/vendor/mp3lame/lib'
  libavutil      52. 40.100 / 52. 40.100
  libavcodec     55. 19.100 / 55. 19.100
  libavformat    55. 12.102 / 55. 12.102
  libavdevice    55.  3.100 / 55.  3.100
  libavfilter     3. 82.100 /  3. 82.100
  libswscale      2.  4.100 /  2.  4.100
  libswresample   0. 17.103 /  0. 17.103
  libpostproc    52.  3.100 / 52.  3.100
Hyper fast Audio and Video encoder
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...

Use -h to get full help or, even better, run 'man ffmpeg'
~ $ 

[andreas--e]

Oh, what an old issue. --audio-format=mp3 works perfectly here now on Lubuntu (I've moved away from Debian since, but thanks for the trip down memory lane LOL)