[asterisk-users] music on hold file formats

[David Backeberg]

On Tue, Jun 23, 2009 at 3:31 AM, Ron<nhadie at gmail.com> wrote:
> Hi,
>
> what software do i need to convert an mp3 to a g729 format?

I'm not aware of a package to do it in one step. Sox can work with a
large number of formats, but mp3 isn't one of them.

> I have a portal where a user can upload their own MP3, but when a user
> is using a g729 codec, the music on hold has a crackly sound. using g711
> it's very clear.

That could be for any number of reasons, including a overly lossy mp3
to begin with.

> so what i'd like to do is when they upload an MP3 i will make a copy on
> g729 format, so that asterisk can choose which file to play depending on
> what codec is being used by the user.

Why did you choose mp3 in the first place? How about turn this around
on the customer and have them upload a g729 file?