Extracting Multiple Audio Tracks From One MP4 File

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rubberburner89

Commendable
Jan 16, 2017
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Hey guys,

I recently finished building my "super" computer, and I've started my own YouTube channel. My goal is to create quality videos but for the past week or so audio "fluctuations" have haunted me. That is until I just recently found out that the recording software I use supports multiple audio tracks.... Now I can raise and lower specific tracks as needed... right... WRONG. The editing software that I'm using does not split the audio. In fact it only lays in one audio track.

Now I know I could probably just find another open source editing software that supports this, but I've become comfortable with this program already and have begun toning in on really making higher quality videos. So I went searching for a third party program that could extract the multiple tracks so I could put them in my editing software individually when i came across this... http://

I couldn't believe how simple this was. Best part is I already have VLC downloaded. So I went to try this for myself and.... whomp whomp. When I right click on the file I would like to extract I do not have the "Extract Audio Sorce" option as in the video... the picture below shows exactly what I have.

d170d1c120.png



Anyways, if this option still exists and I just don't know where to look, or have an incorrect setting within windows or VLC, or if it doesn't exist anymore, any help or guidance is appreciated. Also, if you know of another program that will do the same thing for me, let me know.

Thanks in advance,
Rubberburner89
 
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Alabalcho

Titan
Jan 13, 2011
14,019
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I think that you're attacking the wrong problem, with the wrong tool.

Once you mix your final video, you are left with video stream, and an (stereo, or surround) audio stream. All information about that audio stream original sources (game audio, game soundtrack, your voice-over) is lost, and there's no way to recover it (popular analogy is to try to get back whole eggs, flour and butter out of pancakes).

As for why you don't see that "Extract audio" from the right-click, that's another question.
 
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skittle

skittle

Splendid
Dec 27, 2006
4,036
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Open vlc and use the convert/save. Ffmpeg can do this with multiple tracks too of course but not automatically, which coincidentally is probably why not many free tools have this option (because almost all free and payed software uses ffmpeg).

With ffmpeg You must use the stream mapping options. It becomes easier if your files are all the same number of audio streams..

For example with 3 audio streams:

Code: 
ffmpeg -i input.mp4 \
-map 0:v -c copy video.mp4 \
-map 0:a:0 -c copy audio0.mp4 \
-map 0:a:1 -c copy audio1.mp4 \
-map 0:a:2 -c copy audio2.mp4

You can make a batch file that does this automatically for example... not sure why your editing software cannot do it though. ..
 
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wertciu

wertciu

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Oct 4, 2016
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You can use Audacity. Audacity will automatically convert video to audio for you so you can just import the video file and it will automatically split it into audio tracks (as many as there are, depending on whether its stereo or surround). Then you can save the tracks individually for importing into your other program.


 
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