Convert Mp4 to Mp3 in Linux Terminal
First things first, install the required software packages.
sudo apt-get install ffmpeg && sudo apt-get install libavcodec-extra-53
Then use it. For FFmpeg with Constant Bitrate Encoding (CBR)
ffmpeg -i video.mp4 -vn \
-acodec libmp3lame -ac 2 -ab 160k -ar 48000 \
audio.mp3
or if you want to use Variable Bitrate Encoding (VBR)
ffmpeg -i video.mp4 -vn \
-acodec libmp3lame -ac 2 -qscale:a 4 -ar 48000 \
audio.mp3
If it says ffmpeg is depricated use this command instead.
avconv -i video.mp4 -vn -acodec libmp3lame -ac 2 -ab 160k -ar 48000 audio.mp3
The meaning of arguments
| argv | meaning |
|---|---|
| -i | input file name |
| -vn | disable video recording |
| -acodec | force audio codec to libmp3lame |
| -ac | set the number of audio channels |
| -ar | set the audio sampling frequency |
I hope this helps.