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May. 4th, 2009 09:21 pm
theweaselking: (Default)
[personal profile] theweaselking
I have a .mov file, with no DRM.

I want an .mp3 file of the audio from it.

What's the fastest way to do that?

(Linux and Windows ways preferred. Macs require several days lead time for me to grab one, which makes them inherently pretty slow)

(no subject)

Date: 2009-05-05 01:29 am (UTC)
From: [identity profile] theweaselking.livejournal.com
I've got Audacity already. I just didn't look it up!

(no subject)

Date: 2009-05-05 01:41 am (UTC)
From: [identity profile] zastrazzi.livejournal.com
Slacker ;)

What's funny is I seem to recall recommending it to you quite some time ago for something else *grin*

(no subject)

Date: 2009-05-05 01:45 am (UTC)
From: [identity profile] theweaselking.livejournal.com
Uh, how do I get MP3 from Mov? Audacity is busy playing video data as sound, man.

(no subject)

Date: 2009-05-05 02:01 am (UTC)
From: [identity profile] zastrazzi.livejournal.com
Are you doing this in Windows or Linux?

At any rate, if you go to Edit -> Preferences -> Audio I/O you should have a capture device listed there to use as the source.

Lots more info at http://audacityteam.org/wiki/index.php?title=Mixer_Toolbar_Issues#Using_the_Control_Panel

(no subject)

Date: 2009-05-05 02:11 am (UTC)
From: [identity profile] theweaselking.livejournal.com
Running on Windows.

The problem isn't the audio input. The problem is that Audacity 1.2.6 takes binary .mov data and expresses it *all* as sound, not just the audio track.

Or were you suggesting that I play the .mov in VLC while recording in Audacity? That's probably possible, just annoying and not really "convert" so much as "play and record".

(no subject)

Date: 2009-05-05 02:21 am (UTC)
From: [identity profile] dominitus.livejournal.com
I will chuckle if the easiest way is to dump the MOV's audio to WAV via VLC then encode with something like LAME.

(no subject)

Date: 2009-05-05 02:31 am (UTC)
From: [identity profile] theweaselking.livejournal.com
Forget "easiest" in any terms other than "minimum time required for me".

I don't see how to make VLC output a .mov's audio in .wav. What's the procedure?

(no subject)

Date: 2009-05-05 02:41 am (UTC)
From: [identity profile] dominitus.livejournal.com
Streaming/Transcoding Wizard -> Transcode -> Select MOV -> Transcode Audio to Uncompressed, integer -> Encapsulation Format should only allow you to select WAV -> Select filename and place to save to -> GO

(no subject)

Date: 2009-05-05 09:09 pm (UTC)
From: [identity profile] theweaselking.livejournal.com
I don't see *any* of those options.

(no subject)

Date: 2009-05-05 10:58 pm (UTC)
From: [identity profile] dominitus.livejournal.com
Admittedly I'm using a Mac, but as far as I'm aware the latest version of VLC for Windows has the same Streaming/Transcoding feature...

(no subject)

Date: 2009-05-05 01:33 am (UTC)
From: [identity profile] jokemanandpeppy.livejournal.com
In a pinch there's tons of on line sites that will convert file formats.

I've had good luck with this one.

http://convert.viloader.net/

(no subject)

Date: 2009-05-05 01:39 am (UTC)
From: [identity profile] scifantasy.livejournal.com
FFMPEG is my go-to for most file conversion. I know it's available for Linux; don't know about Windows. But it's probably a bit much...kind of like cutting butter with a laser.

ffmpeg

Date: 2009-05-05 06:12 am (UTC)
From: [identity profile] ajsl8r.livejournal.com
http://www.ffmpeg.org/ffmpeg-doc.html#SEC5

ffmpeg -i midgetporn.mov giggles_n_screams.mp3

you may want some other options to specify the mp3 quality. when ffmpeg starts it will display the parameters of the audio and video streams. you can use that to determine what quality you want your output mp3 to be.

Then crop the part you want in audacity. You could crop the part you want in ffmpeg too if you know the time signatures.

Trickery tricks

Date: 2009-05-05 02:45 am (UTC)
From: [identity profile] lawnchair.livejournal.com
I'd probably first go to 'mencoder' from a Linux command-line. I realize, though, it's fairly command-line fiddly.

There is a more clever trick. I'll bet you have VLC installed as a player. If not, you ought to.

In VLC, open the Preferences. Pull down the menus under "Audio" and you'll see "Output Modules". The default is ALSA or OSS (in Linux at least), but there should be a "File Output". This will make a .wav file for you, which you should then be able to encode. You can set the Video Output Module to "Dummy", if you want it to decode faster than real-time.

Slightly quick-n-dirty, but it avoids muckety command line hacking.

Re: Trickery tricks

Date: 2009-05-05 02:48 am (UTC)
From: [identity profile] lawnchair.livejournal.com
Okay, I see lots of VLC mentioned above. As said above, the Audio Output Module.

Re: Trickery tricks

Date: 2009-05-05 03:16 am (UTC)
From: [identity profile] catsidhe.livejournal.com
I looked at that, but I couldn't find a way to force it to only encode the audio and fling the video stream straight at /dev/null.

Assuming that the .mov pointed to in the previous post is the one in question, the mplayer tells me that it's mp4v video and aac audio.

...

ahah!

mplayer -vo null -ao pcm movie.mov && lame audiodump.wav

(no subject)

Date: 2009-05-05 04:19 am (UTC)
ext_8707: Taken in front of Carnegie Hall (bofh)
From: [identity profile] ronebofh.livejournal.com
I'd upload the .mov to YouTube, download it as an FLV, then use an FLV->mp3 decoder.

(no subject)

Date: 2009-05-05 05:05 am (UTC)
ext_8707: Taken in front of Carnegie Hall (mesna)
From: [identity profile] ronebofh.livejournal.com
Don't judge my lifestyle choice, maaannnn.

(no subject)

Date: 2009-05-05 06:09 am (UTC)
From: [identity profile] rdmasters.livejournal.com
I'd just go with transcode(1) under Linux, and split the MOV into two streams, dump the video stream to /dev/null, and get transcode to recode the output audio stream into MPEG Layer 3.

http://www.transcoding.org

(no subject)

Date: 2009-05-05 08:46 pm (UTC)
From: [identity profile] skington.livejournal.com
QuickTime has a variety of "Export audio to ..." options. At least it does on the Mac OS version; I see no reason why it shouldn't have something like that on Windows. Unless that's something that's only available from QuickTime Pro.

(no subject)

Date: 2009-05-05 11:00 pm (UTC)
From: [identity profile] dominitus.livejournal.com
Pro users get all the export options, non-Pro get something very limited. Not sure whether non-Pro will export to WAV, but the Pro version will.

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