Extracting audio from MP4 video into MP3

i downloaded few mp4-encoded videos i'd extract audio stream mp3 files easy listening on digital player.

most likely, vlc can this, the instructions followed on forums gave out "bubbly" sound file.

here files specifications:

use ffmpeg:

ffmpeg -i input_file.mp4 -vn -b:a 128k -c:a libmp3lame output_file.mp3

(don't forget adjust audio bitrate, -b:a, otherwise might huge file low quality source.)

many digital players support aac audio well, can try extracting original aac audio stream, without having reduce quality more:

ffmpeg -i input_file.mp4 -vn -c:a copy output_file.m4a

for older versions of ffmpeg, you'll need use -ab & -acodec options instead of -b:a & -c:a.

Primitatvve