[Freeswitch-users] Capturing the Current Call Audio

Tue Sep 15 02:45:15 MSD 2015

Avi,

Here is a Linux script I wrote a while back. Some assembly required, see
store for details, batteries not included, your mileage may vary...

If you decide to use it and it works please feel free upload to the wiki or
donate to the project.

-Michael

On Sat, Sep 12, 2015 at 10:35 AM, Avi Marcus <avi at avimarcus.net> wrote:

> I use wireshark to look at the SIP packets or listen to the audio. But I
> haven't found a simple script to export e.g. a WAV from the pcap... if
> someone finds, please let us know!
>
> -Avi
>
> On Sat, Sep 12, 2015 at 5:25 PM, ik <idokan at gmail.com> wrote:
>
>> It does has the RTP (and RTCP).
>> You can export one or more calls to the same file.
>>
>> On Sat, Sep 12, 2015 at 12:27 AM, Leonardo Lima Ribeiro <
>> llribeiro90 at gmail.com> wrote:
>>
>>> And from the cap file I can get the audio right?
>>> I’m taking a look in some scripts that can extract the audio from pcap
>>> files, but I think it’s need to be embedded on the pcap file when it’s
>>> saving right?
>>>
>>> I tried the sngrep and it generated a 128k pcap file, and I did about 3
>>> calls, does it really have the audio?
>>>
>>> (I’m about to test pcapsipdump but the installation is failing in OS X,
>>> I think I will move to a CentOS machine)
>>>
>>> Thank you all guys!
>>>
>>> Em 11/09/2015, à(s) 2:47 PM, ik <idokan at gmail.com> escreveu:
>>>
>>> I'm using sngrep, it saves a specific dialog to a pcap file, or several
>>> dialogs, based on what you select.
>>>
>>> On Fri, Sep 11, 2015 at 4:58 PM, Aqs Younas <aqsyounas at gmail.com> wrote:
>>>
>>>> pcapsipdump captures all calls on particular instance into separate
>>>> files. You can't make it to capture a specific file.
>>>>
>>>> On 11 September 2015 at 16:43, Leonardo Ribeiro <llribeiro90 at gmail.com>
>>>> wrote:
>>>>
>>>>> Sorry all, it was my phone auto corrector. Again:
>>>>>
>>>>> Thanks Avi,
>>>>>
>>>>> I had read about and I'm going to try that. My IVR is a script on lua,
>>>>> do you know how can I call the  pcapsipdump for the current call from there?
>>>>>
>>>>> I was thinking about another solution... What if I execute a record
>>>>> mycall.wav 300 and try to stream this file while is being record? It would
>>>>> work? The main problem is that the script calls the execute record as a
>>>>> synchronous way, but I would need to do some actions while it's recording
>>>>> like play sounds, curl posts etc.
>>>>>
>>>>> Thank you!
>>>>> Em 11/09/2015 08:38, "Leonardo Ribeiro" <llribeiro90 at gmail.com>
>>>>> escreveu:
>>>>>
>>>>>> Thanks Avi,
>>>>>>
>>>>>> I've readed about and I'm going to try that. My IVR is a script on
>>>>>> lua, do you know how can I call the  pcapsipdump for the current call from
>>>>>> there?
>>>>>>
>>>>>> I was thinking Abou another solution, and what if I execute a record
>>>>>> mycall.wav 300 and try to stream this file while is being record? It would
>>>>>> work? The main problem is that the script calls the execute record as a
>>>>>> synchronous way, but I would need to do some actions while it's recording
>>>>>> like play sounds, curl posta etc.
>>>>>>
>>>>>> Thanks you!
>>>>>> Em 10/09/2015 23:08, "Avi Marcus" <avi at avimarcus.net> escreveu:
>>>>>>
>>>>>>> I use pcapsipdump to capture all call SIP + RTP, grouped by call in
>>>>>>> PCAP format.
>>>>>>>
>>>>>>> -Avi
>>>>>>>
>>>>>>> On Fri, Sep 11, 2015 at 4:36 AM, Leonardo Lima Ribeiro <
>>>>>>> llribeiro90 at gmail.com> wrote:
>>>>>>>
>>>>>>>> Hi!
>>>>>>>>
>>>>>>>> I’m tying to capture the current call audio but I have no idea on
>>>>>>>> how to do that.
>>>>>>>>
>>>>>>>> My main achievement is to get the current call audio and them
>>>>>>>> stream this audio bytes to an API via HTTP Post.
>>>>>>>>
>>>>>>>> I was doing some tries with mod_shout and mod_vlc, and I was
>>>>>>>> successful in the streaming part - I tested some wavs and mp3 files.
>>>>>>>>
>>>>>>>> But the mainly part is that I need the current call audio, and it
>>>>>>>> has no file in the system to stream right?
>>>>>>>>
>>>>>>>> I was thinking if there’s a command that I can get the audio bytes
>>>>>>>> from the current call but I really don’t know, I could not find any option
>>>>>>>> like that.
>>>>>>>>
>>>>>>>> Could you please help me?
>>>>>>>>
>>>>>>>> Thank you,
>>>>>>>> Leonardo Ribeiro
>>>>>>>>
>>>>>>>> _________________________________________________________________________
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>>>>>>>> http://www.freeswitchsolutions.com
>>>>>>>>
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>>>>>>>>
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>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> _________________________________________________________________________
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>>>>>>> http://www.freeswitchsolutions.com
>>>>>>>
>>>>>>> Official FreeSWITCH Sites
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>>>>>>> http://www.cluecon.com
>>>>>>>
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>>>>>>
>>>>>
>>>>> _________________________________________________________________________
>>>>> Professional FreeSWITCH Consulting Services:
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>>>>> http://www.freeswitchsolutions.com
>>>>>
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>>>>> http://www.cluecon.com
>>>>>
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>>>>
>>>>
>>>>
>>>> _________________________________________________________________________
>>>> Professional FreeSWITCH Consulting Services:
>>>> consulting at freeswitch.org
>>>> http://www.freeswitchsolutions.com
>>>>
>>>> Official FreeSWITCH Sites
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>>>> http://www.cluecon.com
>>>>
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>>>
>>> _________________________________________________________________________
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>>> http://www.freeswitchsolutions.com
>>>
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>>>
>>>
>>> _________________________________________________________________________
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>>> consulting at freeswitch.org
>>> http://www.freeswitchsolutions.com
>>>
>>> Official FreeSWITCH Sites
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>>
>>
>> _________________________________________________________________________
>> Professional FreeSWITCH Consulting Services:
>> consulting at freeswitch.org
>> http://www.freeswitchsolutions.com
>>
>> Official FreeSWITCH Sites
>> http://www.freeswitch.org
>> http://confluence.freeswitch.org
>> http://www.cluecon.com
>>
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>>
>
>
> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
> consulting at freeswitch.org
> http://www.freeswitchsolutions.com
>
> Official FreeSWITCH Sites
> http://www.freeswitch.org
> http://confluence.freeswitch.org
> http://www.cluecon.com
>
> FreeSWITCH-users mailing list
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