[Freeswitch-dev] Newbie Q

[Eliot Gable]

Maybe just record the entire call and then split it up afterwards using a
wav-file post-processing program. Maybe sox or ffmpeg or something similar
might work? Alternatively, you could use the API in FreeSWITCH to start and
stop and start and stop the recording every 30 seconds, but that seems like
overkill and lots of extra work compared to just using post-processing
software. Plus, you'll miss bits of the recording between when you stop one
segment and start the next. Is there some reason you need to be doing this
on the fly versus post-processing? Alternatively, you could write a module
in C for FreeSWITCH which taps the audio and you could buffer it internally
in your module and then save out 30-second segments. This would let you get
all of the audio with micro-second precision splits so you wouldn't loose
any audio between segments, but it's an awful lot of work to go through
compared to post-processing.

On Tue, Nov 1, 2011 at 6:50 PM, P. Broennimann <peter at enovatiq.com> wrote:

> Hi Michael
>
> Thx for answering. Sorry next time I'll post on the other list...
>
> Basically I am looking for a solution to split "on-the-fly" recordings on
> answer. The result for each call should be a consecutive/sequential set of
> wav files of each X seconds (saved on-the-fly in a specific directory and
> using a specific filename stucture)...
>
> I don't want to reinvent the wheel so that's why I asked if something
> similar already exists. Performance is quiet important here (small latency).
>
> P.S: I bought the FreeSwitch book and I am making progress learning :)
>
> Thx & cheers,
> P.
>
>
> 2011/11/1 Michael Collins <msc at freeswitch.org>
>
>> Welcome to FreeSWITCH!
>>
>> First off, let me just mention that this question is probably better
>> suited to our -users list. (This is the -dev list which has a smaller
>> audience and is reserved for more intense discussions.) If you don't get a
>> satisfactory answer here then re-post on freeswitch-users list.
>>
>> Now, as far as your question goes... you have different options available
>> to you but it really depends on how you are generating your calls. Also, do
>> you want the call to last more than 30 seconds and have only the recording
>> be 30 seconds? Do you want recording to start on early media or on answer?
>>
>> As an example of how to do a simple 30-second recording here's one that
>> when you call it, it will start recording, play music for 30 sec, then end
>> the recording and disconnect:
>>
>> <extension name="record 30 sec of MOH">
>>   <condition field="destination_number" expression="^732664$">
>>     <action application="answer"/>
>>     <action application="record_session"
>> data="$${recordings_dir}/${uuid}.wav"/>
>>     <action application="sched_hangup" data="+30"/>
>>     <action application="playback" data="${hold_music}"/>
>>   </condition>
>> </extension>
>>
>> Dial 732664 (i.e. "REC MOH" :) and just wait. You'll hear music and then
>> at 30 seconds it will stop recording.
>>
>> Happy FreeSWITCHing!
>>
>> -MC
>>
>> On Tue, Nov 1, 2011 at 1:27 PM, P. Broennimann <peter at enovatiq.com>wrote:
>>
>>> Hi there
>>>
>>> I am new to FreeSwitch and I have a question...
>>>
>>> I'd like to record a call/session outputing same length .wav files (all
>>> .wav files to be exactly 30 seconds long).
>>>
>>> I browsed through the FreeSwitch sources from GIT and I found the module
>>> 'mod_snapshot'. Would this module be the best start/base for the
>>> functionality I am looking for resp. are there other modules/scripts that I
>>> should better check first?
>>>
>>> -> I tried to build the module in MSVC Express 2010 but I get errors ->
>>> Anyone was recently successful building it?
>>>
>>> Thx in advance,
>>> P.
>>>
>>>
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>>
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>
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-- 
Eliot Gable

"We do not inherit the Earth from our ancestors: we borrow it from our
children." ~David Brower

"I decided the words were too conservative for me. We're not borrowing from
our children, we're stealing from them--and it's not even considered to be
a crime." ~David Brower

"Esse oportet ut vivas, non vivere ut edas." (Thou shouldst eat to live;
not live to eat.) ~Marcus Tullius Cicero
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