[Asterisk-video] AppConference important question

[Neil Stratford]

To fill in the gaps here - app_videoswitch *was* a fork of 
app_conference several years ago that added some initial support for 
video. Rather than maintain app_videoswitch as a separate project 
however we submitted the patches back to app_conference. Hence 
videoswitch is no more - it's all in app_conference.

So no, app_conference isn't based on videoswitch - videoswitch was based 
on app_conference, but now they are the same thing.

Neil

Borja SIXTO wrote:
> 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>
>>>>
>>>> _______________________________________
>>>>
>>>>     
>>>>         
>>>   
>>>       
>
>