Re: [SoX-users] hi guys trying to add amr-wb to my sox setup on Ubuntu

[Jan S. <ha...@st...>]

On Jul 27 08:02:25, bat guano wrote:
> > ldd `which sox`
> > to see what libraries your binary is actually linked against.
> 
> The result of "ldd `which sox`" is listed below.
> It shows links to libopencore-amrnb and libopencore-amrwb.

So it's not linked to vo-amrwbenc, and that's
why it cannot do AMRWB encoding. So that's settled.

Now, why doesn;t the build system pick vo-amrwbenc up
and build sox linked against it is another question.

> It seems there are 5 relevant amr packages (or more).

These are not 'packages', they are individual libraries.

> 1 libopencore-amrnb
> 2 libopencore-amrwb

These two are provided by
http://sourceforge.net/projects/opencore-amr/files/opencore-amr/

> 3 amrnb (from http://ftp.penguin.cz/pub/users/utx/amr/)
> 4 amrwb (from http://ftp.penguin.cz/pub/users/utx/amr/)

right

> 5 vo-amrwbenc

http://sourceforge.net/projects/opencore-amr/files/vo-amrwbenc/

> For amr-wb ENcoding amrwb or vo-amrwbenc must be used
> (because libopencore-amrwb is only a DEcoder).
> In file sox/src/amr-wb.c there's no instruction to use vo-amrwbenc as the amr-wb ENcoder.
> The matter was discussed before ---> http://permalink.gmane.org/gmane.comp.audio.sox/4064
> It hasn't been implemented yet.

Yes. It seems that sox's build system ignores the installed vo-amrwbenc.

> I will continue to use FFmpeg till then.

Out of curiosity: why do you need to encode into AMR?