[asterisk-users] cli command show codecs

[Danny Nicholas]

Maybe this will be better than my first answer – Audio files do indeed have codec formats.   If you are in a particular codec (say G729), Playback/Background and MOH will search for files that match the codec format first, then transcode WAV/GSM/whatever you have to that format if it isn’t found.  Ideally, you want to have a copy of each codec you can play for all sounds and MOH.  Each of the “canned sounds” comes in each codec format (you pick the ones you want when you do make menuselect).

 

From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of RSCL Mumbai
Sent: Thursday, September 01, 2011 5:35 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] cli command show codecs

 

Hi,

Does audio files have codec formats? I simply convert all my audios (MOH, accouncements) to .wav format, 16bit, 11kHz (I believe this is the best format for asterisk).
I am new to this and may be incorrect.

Going forward, 
(a) How can I check the codec format of my announcements, MOH ?
(b) How can I record/convert announcements, MoH etc to a particular format ?

I believe its a good idea to prevent transcoding and save CPU overheads.

Thx
Sans




On Thu, Sep 1, 2011 at 11:39 AM, Bruce B <bruceb444 at gmail.com> wrote:

if you see leg-A as ulaw and leg-B as g729 then it's trans-coding. If your IVR announcement is not recorded in g729 and you see g729 on the channel when you call into IVR then it's transcoding as well.

 

On Wed, Aug 31, 2011 at 5:50 PM, Eric Wieling <EWieling at nyigc.com> wrote:

Assuming SIP "sip show channels" will show you which codec is used for each call leg.  However it does not track transcoding.


-----Original Message-----
From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of RSCL Mumbai

Sent: Wednesday, August 31, 2011 2:45 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion

Subject: Re: [asterisk-users] cli command show codecs

asterisk -rx "core show channels verbose" does not provide transcoding details.

Unless I have missed something.

Sans



On Wed, Aug 31, 2011 at 10:34 PM, Danny Nicholas <danny at debsinc.com> wrote:


       Core show channels verbose is probably your best bet.  I think the answer also depends on your * version.



       From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of RSCL Mumbai
       Sent: Wednesday, August 31, 2011 10:44 AM
       To: Asterisk Users Mailing List - Non-Commercial Discussion
       Subject: [asterisk-users] cli command show codecs



       Hi,

       Is there a CLI command which will tell me the codec used for active calls and if transcoding is happening ?

       Thx
       Sans


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