[asterisk-users] mixmonitor extension

[Gareth Blades]

On 23/01/14 23:37, Marek Cervenka wrote:
> can someone confirm that mp3 is unsupported? is patch available?
>
> what about patch for Opus?
>
> uncle google doesnt know 

MP3 is only supported for reading not writing. Its a patent issue as 
Asterisk cannot distribute the software to write to mp3 under its own 
license.

Its a similar issue with Opus as the codec is covered by a couple of 
patents in the USA.


What most people do is use MixMonitor to record to .wav (alaw) and then 
in the 'h' extension call a program which runs a background task to 
convert the .wav file to whatever format they wish.

Thats what we do but we actually use the Monitor application and we end 
up with both legs of the call and multiple sets of recordings if people 
pause and unpause. We then move these files off to a different server 
when they get mixed and converted to mp3 and then emailed out to our 
customers. We do it this way to reduce the load on the Asterisk boxes 
but also keep all the call recordings in a central location.