Audio converter? Mp4 to wav

I'm looking for a way to convert an mp4 audio file to wav. Free would be preferable. I tried free:ac but it stops a third of the way in. It's a huge file, about 10.5 hours long.
 
I need to use Audacity to split the track apart, and make some edits to it, and audacity only works with WAV and AIF I think.
 

Darren

Moderator
Staff member

Darren

Moderator
Staff member
Do you have any video editing software that lets you export/encode it as an audio only file. I feel like even old school Movie Maker had that ability but it's been a while since I touched Audacity and video editing.
 

UnholyVision

Active Member
I'm looking for a way to convert an mp4 audio file to wav. Free would be preferable. I tried free:ac but it stops a third of the way in. It's a huge file, about 10.5 hours long.
Have you already ripped it? Because ffmpeg is amazing for what you're looking to do. All you need to do is run.

ffmpeg -i name.mp4 -vn -acodec pcm_s16le -ac 2 name_audio_output.wav

If your video contains multiple audio tracks you can even pinpoint which one you want to extract.

ffmpeg -i video.mp4 <-- Find the audio source in the output. Then just run the command above, but with -map and the number listed for the audio track. For example, the 0:0 would be the listed number of audio.

ffmpeg -i name.mkv -map 0:0 -acodec pcm_s16le -ac 2 name_audio_output.wav
----

FFMpeg is quiet amazing, it can extract audio, video clips, record your desktop, window capture, capture from or extract audio from a browser, extract subtitles, et cetera.
 
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