asterisk users - May 2003 - mp3 playback (mpg123)

Hi All,

First of all a quick thanks to everyone that has provided me
with hints and tips over the past few days.

I'm still experiencing problems with the playback of MP3s. The 
MP3 files will playback but they suffer from "stuttering". mpg123 
is installed and plays back the file without problem via the 
desktop speakers. (It is definitely mpg123 installed, and not 
mpg321)

The playback is over an ISDN interface using the chan_capi 
driver, but I also experienced the same results using chan_modem
(i4l).

Does the mp3 need to converted to a specific bit rate or does 
anything else need to be done to stop the stuttering?

Regards,
Nathan.

On Thursday 15 May 2003 03:29, nathan wrote:
> Hi All,
>
> First of all a quick thanks to everyone that has provided me
> with hints and tips over the past few days.
>
> I'm still experiencing problems with the playback of MP3s. The
> MP3 files will playback but they suffer from "stuttering".
> mpg123 is installed and plays back the file without problem
> via the desktop speakers. (It is definitely mpg123 installed,
> and not mpg321)
>
> The playback is over an ISDN interface using the chan_capi
> driver, but I also experienced the same results using
> chan_modem (i4l).
>
> Does the mp3 need to converted to a specific bit rate or does
> anything else need to be done to stop the stuttering?
If you do not have any zaptel devices in the machine, try
installing the ztdummy driver (if you have a USB bus) and trying
again.  MP3 uses the zaptel device for timing.  If it can't find
that device, it will attempt to play anyway, but the resulting
sound may be choppy.

-Tilghman