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: [email protected] <mailto:[email protected]>
_______________________________________
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