[Asterisk-Users] music on hold without mpg123

[Chris Stenton]

I have found in the past that using the  "resample -ql" option gives better 
results.

Chris

----- Original Message ----- 
From: "lenz" <lenz-ml at oinko.net>
To: "Asterisk Users Mailing List - Non-Commercial Discussion" 
<asterisk-users at lists.digium.com>
Sent: Tuesday, March 14, 2006 7:12 AM
Subject: Re: [Asterisk-Users] music on hold without mpg123


>
> Hi Matt,
> thank you for your inputs. I updated the page at 
> http://www.oinko.net/astrecipes/index.php?n=152 so that it merges in the 
> new pointers you sent me.
>
> I also think that converting to the native codec format will be the best 
> choice - you can usually trade in some disk space for performance. In any 
> case, even having everything as WAV will require only a relatively cheap 
> encoding, and not the full mp3 -> slin -> {your codec} encoding plus the 
> external process that mpg123 used to require.
>
> I wonder: is there any way to use Asterisk as a transcoding tool, i.e. 
> using its internal transcoding capabilities to transcode a given file to 
> all its supported codecs? (I'm thinking of g729 and ilbc, things that are 
> not supported by Sox but that might be useful in a real-life scenario....)
>
> Thank you
> l.
>
> In data Mon, 13 Mar 2006 19:29:57 +0100, Matt Roth <mroth at imminc.com> ha 
> scritto:
>>
>> Lenz,
>>
>> This method is referred to as file-based or native MOH, and I have some 
>> additional information regarding it.  First, a short post on why we 
>> moved from the rawplayer method to native MOH on our production box, 
>> with a quote from Kevin Fleming regarding the impact the change would 
>> have on scalability.
>>
>>  - 
>> http://lists.digium.com/pipermail/asterisk-users/2006-February/141180.html
>>
>> Second, I *believe* (please correct me if I'm wrong) that in order to 
>> get the full benefits of native MOH, the music files should be converted 
>> to the codec that the calls will be in.  This allows Asterisk to play 
>> MOH without performing any transcoding, which lowers the resource 
>> utilization on the box.  Here is a guide for converting WAV files to the 
>> desired codec, which addresses the four characteristics that describe 
>> audio data.
>>
>> - http://lists.digium.com/pipermail/asterisk-users/2006-March/142108.html
>>
>> Please feel free to add any of this information to your site and don't 
>> hesitate to contact me if you spot any mistakes.
>>
>> Thank you,
>>
>> Matthew Roth
>> InterMedia Marketing Solutions
>> Software Engineer and Systems Developer
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>
>
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