[Asterisk-video] video developement

[Emmanuel BUU]

Olle E. Johansson a écrit :
> 27 maj 2009 kl. 13.13 skrev Emmanuel BUU:
>
>   
>> Hello,
>>
>> There is one particular topic (which is HUGE) but very interesting:
>> asterisk codec negociations (video, audio, text, ...). It is absolutly
>> awul in the official version.
>>
>> We have been working on a variant of the videocaps branch that mas
>> originaly brought by John Martin from Aupix and mainained by Olle. At
>> some point of time, there was plans merge it into the official 1.6
>> version but it never happened and I have no news of such a move. We  
>> are
>> still correcting nego issues and it seems that the videocaps  
>> approach is
>> reaching its limits. For two reasons:
>>
>>    * The videocaps structure is redundant with nativeformats and all
>>      the formats used in the various chans and modules
>>    * The videocaps does not properly handle codec preference order.
>>
>> On the other hand, I have recently discovered that the Sippy software
>> company had also made a codec nego patch
>> http://www.b2bua.org/wiki/AsteriskCodecNegotiationPatch that is much
>> cleaner and more integreated in asterisk core.
>>
>> My project would be to launch on top of the 1.6 videocaps branch a  
>> merge
>> between Sippy patch, some IVèS stuff (URL sending support, RTP
>> redundency negociations, ...)  and videocaps (because its handling  
>> fmtp
>> attributes) and finally have a PROPER negication algorithm more in  
>> line
>> with RFC 3264, including proper transcoding behavior and early media
>> support. Ideally, Olle should be implicated.
>>
>> Ok, that's HUGE. But why not try the collaborative effort to improve  
>> our
>> beloved Asterisk software?
>>
>>     
>
> That sounds like a good plan. I also need a version for 1.4.
>
>   
Well we have backported videocaps to 1.4 here.
> The Digium team is working on a more long term solution for trunk,  
> based on input but not code from videocaps and several other patches,  
> including Maxim's codec negotiation patch.
>   
Hum as usual I guess ...
> Regardsless, it would be interesting to get help to continue the work  
> on videocaps. Right now it's broken and needs help to get back into  
> automerge mode, which would be a first step.
>   
How do we do this?
> I have been maintaining videocaps for a long time on my personal time,  
> since I know it solves a lot of issues and it's really a good platform  
> to start from that John donated to the project.
>   
Yup. We do use it.
> /O
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