November 2007
Beginner
642 pages
15h 43m
English
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5.16. Playing MP3 Sound Files on Asterisk
Problem
You want to use music on hold in MP3 format, rather than WAVE or GSM. But, they don't work—how do you make them go?
Solution
Download the asterisk-addons package to get Asterisk's format_mp3 player. Follow the instructions in the /usr/src/asterisk-addons-1.4.[version]/format_mp3/README to install format_mp3.
Now, your MP3 files will play just fine.
MP3 files eat more CPU cycles than WAVE or GSM, so don't use them on marginal systems. MP3 files can easily be converted to WAVE format with lame:
$ lame --decode musicfile.mp3 musicfile.wavDo this to batch-convert all the MP3 files in the current directory:
$ for i in *.mp3; do lame --decode $i 'basename $i .mp3'.wav; done
See Also
man lame
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.