How to pipe or catch the output of SoX?

General · 09-22-2015, 10:31 PM

I am writing a BASH script that sorts MP3s based on some differences in the audio. I found this command can print out some useful statistics about an MP3:

sox audio.mp3 -n stat

This prints the statistics right into the terminal. I can't seem to find any way to capture these statistics. For example, these don't work:

sox audio.mp3 -n stat > out.txt

sox audio.mp3 -n stat | tail -1

How can I capture or pipe the output of SoX statistics?

chrism01 · 09-22-2015, 11:22 PM

According to the man page, for the stat option, the o/p is passed to stderr (not stdout).

robertdaleweir · 09-27-2015, 06:24 PM

Quote:

Originally Posted by General

I am writing a BASH script that sorts MP3s based on some differences in the audio. I found this command can print out some useful statistics about an MP3:

sox audio.mp3 -n stat

This prints the statistics right into the terminal. I can't seem to find any way to capture these statistics. For example, these don't work:

sox audio.mp3 -n stat > out.txt

sox audio.mp3 -n stat | tail -1

How can I capture or pipe the output of SoX statistics?

Hi General
Try

Quote:

sox audio.mp3 -n stat > out.txt 2>&1 | tail -1

.