[Freeswitch-users] Call recording

Sat Jun 17 08:30:38 UTC 2017

On 16 June 2017 at 18:20, Tihomir Culjaga <tculjaga at gmail.com> wrote:

> I would not use lua, dialplan works great ;)
>
> Sent from my iPhone
>
> On 16 Jun 2017, at 09:53, Sven Uszpelkat <USZPELSV at comunycarse.com> wrote:
>
> Hi Giovanni,
>
>
>
> Thank you for your help. We changed our script to something like this:
>
>
>
> session:answer()
>
> while(session:ready() == true) do
>
>    test = session:recordFile("/usr/local/freeswitch/recordings/test.wav",
> 18000, 0, 300)
>
>    os.execute("sync");
>
>    session:setAutoHangup(false)
>
>    session:hangup()
>
> end
>
>
I would put an "if-end" instead of a "while-do", and put sync outside the
"ifend", setautohangup before the ifend, hangup after the ifend

you can also use sync-sleeponesecond-syncagain (after the ifend block),
just to be very proactive :)

-giovanni

>
>
> As result we note an improvement primarily in short recordings (<1:30
> min). These are now practically all complete. In longer recordings there
> are still losses and it seems that they are increasing with the duration of
> the recording. I’m not sure how to interpret this but to me it looks like
> this: with the sync call we achieved to write the buffer content to the
> file, however in longer calls there is remaining audio which hasn’t even
> been read to the buffer. Is that correct? If so then the recording function
> doesn’t ensure to read the remaining audio after hangup. (With tcdump we
> checked that all audio packets arrived before the BYE message) Does this
> mean that this behavior is by design?
>
>
>
> Best regards,
>
> Sven
>
>
>
> *De:* Giovanni Maruzzelli [mailto:gmaruzz at gmail.com <gmaruzz at gmail.com>]
> *Enviado el:* jueves, 15 de junio de 2017 13:17
> *Para:* Sven Uszpelkat
> *CC:* FreeSWITCH Users Help
> *Asunto:* Re: [Freeswitch-users] Call recording
>
>
>
>
>
>
>
> On 15 June 2017 at 12:50, Sven Uszpelkat <USZPELSV at comunycarse.com> wrote:
>
>
>
> 3.)    We set the silence threshold to 0 because the documentation is not
> very clear how to disable the silence detection. We don’t want the
> recording to stop in response to a period of silence. The point is to
> record everything.
>
>
>
> The silence_threshold determines what is considered silence, eg below what
> level of acoustic energy we state the stream is containing silence. Then,
> we wait for "how_many_silence_seconds" or until hangup before stopping
> recording.
>
> So, maybe you are right, and setting it to 0 will consider silence only
> when there is absolute silence in the stream, so for all practical
> purposes, until hangup. I have no mean to check source code now.
>
> On another hand, I can think at other possible causes for the premature
> end of the recorded file: maybe you move the file before it has been
> flushed by FreeSWITCH or by operating system? Maybe the hangup in the
> script interrupts the recording in the script and close the file descriptor
> before is flushed? (I am shooting in the dark)
>
> You can try to leave out those two lines, and test again.
>
> Also, you can insert a line that sync (flush) the filesystem before
> exiting, just to be sure.
>
> I would insert it after the while(session:ready())
>
> A system(sync), or something similar will probably do.
>
>
>
> Hope this helps,
>
> -giovanni
>
>
>
>
>
>
>
>
>
> Best regards,
>
> Sven
>
>
>
> *De:* FreeSWITCH-users [mailto:freeswitch-users-
> bounces at lists.freeswitch.org
> <freeswitch-users-bounces at lists.freeswitch.org>] *En nombre de *Giovanni
> Maruzzelli
> *Enviado el:* jueves, 15 de junio de 2017 11:19
> *Para:* FreeSWITCH Users Help
> *Asunto:* Re: [Freeswitch-users] Call recording
>
>
>
>
>
>
>
> On 15 June 2017 at 09:49, Sven Uszpelkat <USZPELSV at comunycarse.com> wrote:
>
> Hello,
>
>
>
> We are using FreeSWITCH as a third-party recording application, i.e. we
> are receiving SIP calls with the complete audio of conversations taking
> place on another switch and we are saving this audio to a file. To achieve
> this we are using a simple script similar to this:
>
>
>
> session:answer()
>
> while(session:ready() == true) do
>
>    test = session:recordFile("/usr/local/freeswitch/recordings/test.wav",
> 18000, 0, 300)
>
>    session:setAutoHangup(false)
>
>    session:hangup()
>
> end
>
>
>
> This script will be invoked by the following dialplan:
>
>
>
> <extension name="Recording">
>
>       <condition field="destination_number" expression=".*">
>
>             <action application="lua" data="record.lua"/>
>
>       </condition>
>
> </extension>
>
>
>
> Basically it seems to work quite well, but sometimes there are missing
> audio at the end of the recorded file.  Usually it’s only a few seconds,
> but sometimes it seems to be more. (It’s like the recording sometimes goes
> behind the real call and when the hangup event is received the remaining
> audio is discarded.)
>
>
>
> What could be the reason for this behavior? Is there something wrong with
> the script or is there a better way to achieve our goal?
>
>
>
> One first question come to my mind: why do you use a script here? A simple
> extension can do exactly the same, if you just want to record the session...
>
> https://freeswitch.org/confluence/display/FREESWITCH/
> mod_dptools:+record_session
>
> Anyway, if you want to use the script, why you first
>
> session:setAutoHangup(false)
>
> and after that you
>
>
>
> session:hangup()
>
>
>
> ?
>
>
>
> Also, you made the silence_threshold equal 0 (zero).
> Have you has the same problems using a silence_threshold of, let's say, 30
> (thirty), like in documentation? ( https://freeswitch.org/
> confluence/display/FREESWITCH/Lua+API+Reference#LuaAPIReference-session:
> recordFile )
>
>
>
> Hope this helps,
>
> -giovanni
>
>
>
>
>
>
> Many thanks in advance.
>
>
>
> Best regards,
>
>
>
> Sven Uszpelkat
> Departamento I+D
> Comunycarse Network Consultants, S.L.
>
>
>
>
>
> <image001.jpg> <http://www.facebook.com/pages/Comunycarse/227218309114>
> <image002.jpg> <http://www.linkedin.com/company/comunycarse-s.l.>
> <image003.jpg> <https://twitter.com/#%21/comunycarse> <image004.jpg>
> <http://www.blog.comunycarse.com/>
>
>
> Joaquín Turina, 2
> 28224 Pozuelo de Alarcón MADRID
> Tlf. +34 917 498 700 <+34%20917%2049%2087%2000>
> Fax +34 917 498 720 <+34%20917%2049%2087%2020>
>
> Sabino Arana, 18
> 08028 BARCELONA
> Tlf. +34 934 098 480 <+34%20934%2009%2084%2080>
> Fax +34 934 098 490 <+34%20934%2009%2084%2090>
>
> http://www.comunycarse.com
>
>
> AVISO LEGAL
> La presente comunicación y sus anexos tiene como destinatario la persona a
> la que va dirigida, por lo que si usted lo recibe por error debe
> notificarlo al remitente y eliminarlo de su sistema, no pudiendo
> utilizarlo, total o parcialmente, para ningún fin. Su contenido puede tener
> información confidencial o protegida legalmente y únicamente expresa la
> opinión del remitente. El uso del correo electrónico vía internet no
> permite asegurar ni la confidencialidad de los mensajes ni su correcta
> recepción. En el caso de que el destinatario no consintiera la utilización
> del correo electrónico deberá ponerlo en nuestro conocimiento
> inmediatamente.
>
> DISCLAIMER
> This message and its attachments are intended exclusively for the named
> addressee. If you receive this message by mistake, please delete it
> immediately from your system and notify the sender. You may not use this
> message or any part of it for any purpose. The message may contain
> information that is confidential or protected by law, and any opinions
> expressed are those of the individual sender. Internet email guarantees
> neither the confidentiality nor the proper receipt of the message sent. If
> the addressee of this message does not consent to the use of internet
> e-mail, please inform us immediately.
>
>
>
>
> _________________________________________________________________________
> 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
> FreeSWITCH-users at lists.freeswitch.org
> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
> http://www.freeswitch.org
>
>
>
>
> --
>
>
> Sincerely,
>
> Giovanni Maruzzelli
> OpenTelecom.IT
> cell: +39 347 266 56 18
>
>
>
>
> --
>
>
> Sincerely,
>
> Giovanni Maruzzelli
> OpenTelecom.IT
> cell: +39 347 266 56 18
>
> _________________________________________________________________________
> 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
> FreeSWITCH-users at lists.freeswitch.org
> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
> http://www.freeswitch.org
>
>

-- 

Sincerely,

Giovanni Maruzzelli
OpenTelecom.IT
cell: +39 347 266 56 18
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freeswitch.org/pipermail/freeswitch-users/attachments/20170617/34ae375a/attachment-0001.html>