'How to extract audio from MPEG-4 file using ffmpeg [closed]

How can we extract audio from video file (MPEG-4 format)?

What is convenient form of storing the extracted audio data for further analysis? (edit: In other words: is it better to use PCM format or something like WAV if I want to get audio sound level?)

From other questions about this topic I learned that ffmpeg is a right tool to do this.



Solution 1:[1]

You can use the following command:

ffmpeg - i input.mp4 -vn -acodec pcm_s16le -ac 2 -ar 44100 out.wav

-vn: no video

-acodec: audio codec selection.

pcm_sl6le: 2 bytes samples in little endian format

-ac: number of audio channels

-ar: audio sample rate

out.wav output wav file

Sources

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Source: Stack Overflow

Solution Source
Solution 1 Joel G Mathew