Convert mp4 to mp3

[bsd-keith]

Convert mp4 to mp3

I have a load of mp4 files with spaces in their names, the first line replaces the spaces with _ so that the second line can convert them to mp3.

#!/bin/sh

for f in *; do mv "$f" `echo $f | tr ' ' '_'`; done

for X in *.mp4;do ffmpeg -i $X $X.mp3;done