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commandlinefu.com is the place to record those command-line gems that you return to again and again.

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May 19, 2015 - A Look At The New Commandlinefu
I've put together a short writeup on what kind of newness you can expect from the next iteration of clfu. Check it out here.
March 2, 2015 - New Management
I'm Jon, I'll be maintaining and improving clfu. Thanks to David for building such a great resource!

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Psst. Open beta.

Wow, didn't really expect you to read this far down. The latest iteration of the site is in open beta. It's a gentle open beta-- not in prime-time just yet. It's being hosted over at UpGuard (link) and you are more than welcome to give it a shot. Couple things:

  • » The open beta is running a copy of the database that will not carry over to the final version. Don't post anything you don't mind losing.
  • » If you wish to use your user account, you will probably need to reset your password.
Your feedback is appreciated via the form on the beta page. Thanks! -Jon & CLFU Team

Rip audio from a video file.

Terminal - Rip audio from a video file.
mplayer -ao pcm -vo null -vc dummy -dumpaudio -dumpfile <output-file> <input-file>
2009-02-05 08:17:04
User: sykora
Rip audio from a video file.

Replace and accordingly.


There is 1 alternative - vote for the best!

Terminal - Alternatives

Know a better way?

If you can do better, submit your command here.

What others think

ffmpeg -i foo.[mpg, mov, wma] foo.[mp3, wav, ogg]

rips audio too. ffmpeg4life!

Comment by sunji 400 weeks ago

didn't work with a .mp4 file. ffmpeg didn't work either. i did get the audio from the .flv file.

can i maybe use a different option with mplayer?

ffmpeg failed to recognize the format.

i usually include the bitrate and sample rate with ffmpeg

ffmpeg -i <input.flv> -ab 128000 -ar 44100 <output.mp3>

i can extract from flv but not mp4


Comment by cybormoron 396 weeks ago

with ffmpeg, use

-acodec copy -vn

instead of

-ab 128000 -ar 44100

so you dont degrade the quality

Comment by bugmenot 243 weeks and 4 days ago

Your point of view

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