[Freeswitch-users] Save voicemail in opus format

[Kamil Nigmatullin]

I understand that. But opus is more like static codec in FS. If you will
see source code of mod_opus there is an initial parameters hardcoded in
module. and I bet it is not being changed during the call.

Ok. What is the format that was recorded in file with opus extension? Why
does it play with unloaded mod_opus?



2014-11-21 2:27 GMT+06:00 jonathan augenstine <jaugenstine at gmail.com>:

> I will try to summarize to avoid previous conversations on this topic.
> Supporting the recording and playback of opus format files is difficult to
> impossible.  This issue stems from the fact that opus is a stateful codec.
> This translates into the reality that attempting to simply inject the opus
> bitstream into a current call can result in a mismatch of the parameters
> giving an inaudible playback.  The stateful codecs not only vary from call
> to call but can change within the same call.  I have already gone down this
> road and it is a dead-end.
>
> Jonathan
>
> On Thu, Nov 20, 2014 at 11:38 AM, Kamil Nigmatullin <
> kamil.nigmatullin at gmail.com> wrote:
>
>> Hello. I want to save voicemail in opus codec so that client could listen
>> it without transcoding.
>>
>> I set extension to opus instead of wav. Freeswitch started to write file
>> with opus extension and it content of the file looks diffrent than wav. But
>> I can playback this file even with unloaded mod_opus. VLC cannot play this
>> file.
>>
>> How can this be explained?
>>
>>
>> --
>> Kamil Nigmatullin
>> Skype: kamil.nigmatullin
>>
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>
>
> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
> consulting at freeswitch.org
> http://www.freeswitchsolutions.com
>
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-- 
Kamil Nigmatullin
Tel: 77272323748
mob: 7 (707) 2517003
Skype: kamil.nigmatullin
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