[Asterisk-video] AppConference important question

[Borja SIXTO]

I am not sure if the original project integrates now a VAD for the audio 
switching (it was made for sure in the past in the RPT audio inactivity...).

There is a mode where you can switch the video source by pressing DTMF 
keys too.

You cannot prompt video clips, only the audio is supported.

There is a fork of app_conference called app_konference (it supports 
Asterisk 1.6).

Regards,


Borja from i6net

Steve Kann a écrit :
>
> Actually, app_conference wasn't based on videoswitch (not sure what 
> that is), but Borja is correct in that it doesn't transcode or "mix" 
> video, it only provides (with some options) for switching video. 
>
> The passages Salvatore quotes below describe the architecture for 
> mixing audio.  In the video case, for multi-party conferences, it 
> implements a "follow-the-speaker" switching algorithm, so generally 
> all parties see the video stream of a whomever is speaking.
>
> -SteveK
>
>
> Borja SIXTO wrote:
>> Hi Salvatore,
>>
>> app_conference (or app_konference) were the result of a project called 
>> videoswitch.
>> There is no transcoding, only video switching.
>>
>> To be be able to transcode, you should use app_transcode, but for the 
>> moment it only support (h263p (I/O) and Mpeg4 (I) (h263 rfc2190 isn't 
>> fully supported, it needs modification).
>>
>> Another way can be to use the Sergio's MCU (it integrate a video mixer 
>> and transcoder).
>> It is a base an probably need some modifications to respond to your 
>> requirements.
>>
>> In both cases, you don't have a turn key solution for the moment.
>>
>> Regards,
>>
>>
>> Borja
>>
>> Salvatore Frandina a écrit :
>>   
>>> Hi,
>>>
>>> I'm writing a report about videoconference support in Asterisk. I have 
>>> read in README of AppConference these feature:
>>>
>>> Mixing design
>>>
>>> * Minimize encoding/decoding, minimize mixing.
>>> * Minimize generational loss from trancoding.
>>> * Usual cases are handled very efficiently:
>>> o One speaker: That speaker's frame is sent directly to each
>>> participant which uses the same codec. It is trancoded
>>> _once_ for each additional codec type used by participants.
>>> o Two speakers: Each speaker gets the other speaker's frames.
>>> The two speaker's frames are decoded and mixed, and then
>>> encoded _once_ for each codec type used by participants.
>>>
>>> The underline text says that the plug-in can transcode the video...i 
>>> try with two softphone one with h.263 support and the other with h.264 
>>> but the can't see each other, but only myself
>>> Please, can you explain me?
>>>
>>> Thank
>>>
>>> -- 
>>> _______________________________________
>>> Salvatore Frandina
>>> website: http://frandinas.altervista.org
>>> mail: salvatore.frandina at gmail.com <mailto:salvatore.frandina at gmail.com>
>>>
>>> _______________________________________
>>>
>>>     
>>
>>   
>