[SR-Users] RTPengine - Transcoding example available?

[Gopalakrishnan N]

Ok I never tested with kamilio.

Probably someone can assist here using kamilio.

Thanks.

On Tue 20 Feb, 2018, 8:12 PM Denys Pozniak, <denys.pozniak at crazycall.com>
wrote:

> But I use *rtpengine_answer("codec-mask-opus codec-transcode-PCMA")* and
> as I understand it should mask opus in OK and enable transcoding to PCMA.
> "Change your config in side A to take only PCMA effective." - yes, I
> tested and it works well, but it is out of my scenario.
>
> On 20 February 2018 at 14:54, Gopalakrishnan N <saigop at gmail.com> wrote:
>
>> Yes correct. RTP is good since the OPUS codec is available in both the
>> sides its getting negotiated. Change your config in side A to take only
>> PCMA effective.
>>
>> On Tue, 20 Feb 2018 at 18:05 Denys Pozniak <denys.pozniak at crazycall.com>
>> wrote:
>>
>>> Thank you for the answer, but from "SDP" point of view everything looks
>>> OK, I think issue is with my config or transcoding engine:
>>>
>>> Side A INVITE-> Proxy/Rtpengine:
>>>
>>> v=0
>>> o=- 3543840537 1 IN IP4
>>> s=SIPPER for PhonerLite
>>> c=IN IP4 side_a
>>> t=0 0
>>> m=audio 55062 RTP/AVP 107 8
>>> a=rtpmap:107 opus/48000/2
>>> a=rtpmap:8 PCMA/8000
>>> a=ssrc:1792443851
>>> a=sendrecv
>>>
>>> Proxy/Rtpengine OK -> Side A:
>>>
>>> v=0
>>> o=- 3728121777 3728121778 IN IP4
>>> s=pjmedia
>>> b=AS:50
>>> t=0 0
>>> a=X-nat:0
>>> m=audio 30254 RTP/AVP 8
>>> c=IN IP4 rtpengine
>>> b=TIAS:32000
>>> a=rtpmap:8 PCMA/8000
>>> a=sendrecv
>>> a=rtcp:30255
>>>
>>> So here must be PCMA in direction from  Proxy/Rtpengine -> Side A, but
>>> I have opus.
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> On 20 February 2018 at 12:41, Gopalakrishnan N <saigop at gmail.com> wrote:
>>>
>>>> Hi Denys,
>>>>
>>>> Am not much user of Kamilio, but am from Telecom background. The reason
>>>> for your case is, in side A you have OPUS and in side B already OPUS is
>>>> available and since both has the same codec as first priority it will
>>>> negotiate itself with same codec and then it will look for other priority.
>>>> Remove OPUS from side A and it will automatically go into transcoding mode.
>>>>
>>>> On Tue, 20 Feb 2018 at 16:17 Denys Pozniak <denys.pozniak at crazycall.com>
>>>> wrote:
>>>>
>>>>> Hello!
>>>>>
>>>>> Please explain how to achive next:
>>>>>
>>>>> Side A supports:
>>>>> OPUS
>>>>> PCMA
>>>>>
>>>>> Side B supports:
>>>>> OPUS
>>>>> PCMA
>>>>> PCMU
>>>>>
>>>>> I need to transcode in direction A->B from PCMA to OPUS?
>>>>> So should be like this:
>>>>> A(PCMA) -> (PCMA)Rtpengine(OPUS)->B(OPUS)
>>>>>
>>>>> I configured like this:
>>>>> rtpengine_offer("codec-mask-PCMA codec-transcode-opus");
>>>>> rtpengine_answer("codec-mask-opus codec-transcode-PCMA");
>>>>>
>>>>> But leg from Rtpengine to A has wrong codec (OPUS):
>>>>> https://drive.google.com/file/d/14GAIt8lL7Igj9S95b_RS6CXtmGVhjLa1/view
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> On 19 February 2018 at 13:56, Richard Fuchs <rfuchs at sipwise.com>
>>>>> wrote:
>>>>>
>>>>>> On 2018-02-19 05:48 AM, Denys Pozniak wrote:
>>>>>>
>>>>>>> Hello!
>>>>>>>
>>>>>>> Small note.
>>>>>>> In case of opus use: codec-transcode-opus (opus is lowercase).
>>>>>>>
>>>>>>
>>>>>> As explained in the readme, the format generally follows the SDP
>>>>>> format, including specifying sample rate and number of channels. As an
>>>>>> additional parameter, the bitrate can be specified for codecs that support
>>>>>> it.
>>>>>>
>>>>>> Examples:
>>>>>>
>>>>>> transcode-speex/32000
>>>>>>
>>>>>> transcode-opus/48000/2/64000
>>>>>>
>>>>>>
>>>>>> Cheers
>>>>>>
>>>>>> _______________________________________________
>>>>>> Kamailio (SER) - Users Mailing List
>>>>>> sr-users at lists.kamailio.org
>>>>>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>>
>>>>> BR
>>>>> Denys Pozniak
>>>>> _______________________________________________
>>>>> Kamailio (SER) - Users Mailing List
>>>>> sr-users at lists.kamailio.org
>>>>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>>>>
>>>>
>>>> _______________________________________________
>>>> Kamailio (SER) - Users Mailing List
>>>> sr-users at lists.kamailio.org
>>>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>>>
>>>>
>>>
>>>
>>> --
>>>
>>> BR
>>> Denys Pozniak
>>> _______________________________________________
>>> Kamailio (SER) - Users Mailing List
>>> sr-users at lists.kamailio.org
>>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>>
>>
>> _______________________________________________
>> Kamailio (SER) - Users Mailing List
>> sr-users at lists.kamailio.org
>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>
>>
>
>
> --
>
> BR
> Denys Pozniak
> _______________________________________________
> Kamailio (SER) - Users Mailing List
> sr-users at lists.kamailio.org
> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.kamailio.org/pipermail/sr-users/attachments/20180220/47c331f7/attachment.html>