[Freeswitch-dev] silence on a native recording

Mathieu Rene mrene_lists at avgs.ca
Tue Sep 8 09:59:26 PDT 2009

The whole point of mod_native_file is to skip decoding, so you can  
record in unsupported codecs like G729, you would need to record to a  
wav file if you want silence detection since the core needs the audio  

Mathieu Rene
Avant-Garde Solutions Inc
Office: + 1 (514) 664-1044 x100
Cell: +1 (514) 664-1044 x200
mrene at avgs.ca

On 4-Sep-09, at 1:52 PM, Peter Volchek wrote:

> Hi,
> I am getting the warnings in the freeswitch.org , saying...
> [WARNING] switch_ivr_play_say.c:567 Can't detect silence on a native
> recording.
> This is thrown each time I am calling session:recordFile in my lua
> scripts. I am not specifying any extensions, thus relaying on the
> encoding type chosen by freeswitch. So the files are given  
> extensions .PCMU.
> I've been told that this is a harmful warning.
> However, we need an ability to detect the silence in the following  
> scenario.
> In a voicemail, while the caller is leaving a message, he can mute his
> phone. The application may kick up the event, saying that silence is
> detected, so we would pause the recording and play the prompt "Are you
> still there?" to the caller.
> Thanks.
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