[Asterisk-video] Videomixing in MeetMe

[Klaus Darilion]

Hi Lorenzo!

I have problems when linking the videomixer:

cvm_session.o(.text+0x93b): In function `cvm_peer_new':
/export/darilion/confiance/confiance_videomixer-0.1/cvm_session.c:315: 
undefined reference to `rtp_session_set_connected_mode'
/usr/local/lib/libavformat.a(utils.o)(.text+0x2947): In function 
`av_find_stream_info':
/export/darilion/confiance/confiance_videomixer-0.1/ffmpeg/libavformat/utils.c:1908: 
undefined reference to `avcodec_pix_fmt_to_codec_tag'
/usr/local/lib/libavformat.a(allformats.o)(.text+0x21): In function 
`av_register_all':

I use libort4 (from backports.org for debian woody) and
ffmpeg self-installed from todays SVN trunk.

Which version of ortp do you use.

regards
klaus



Lorenzo Miniero wrote:
> Klaus Darilion ha scritto:
>> Hi Lorenzo!
>>
>> How can the VideoMixer be used with Asterisk?
>>
>> regards
>> klaus
> 
> 
> Hi Klaus,
> 
> both the videomixers are external elements, which receive commands 
> through dedicated protocols. The patch which you can get on 
> http://confiance.sf.net/ enables MeetMe to talk this protocols, and to 
> bridge the video RTP connections between the users and the active 
> videomixer.
> 
> Regards,
> Lorenzo
> 
> 
>>
>> Lorenzo Miniero wrote:
>>> Hi all,
>>>
>>> I just uploaded on the CONFIANCE webpage, http://confiance.sf.net/, 
>>> the patch to enable videomixing and continuous presence in MeetMe. 
>>> The patch enables such functionality both for our enhanced MeetMe 
>>> (i.e. video sources are enabled/disabled through BFCP moderation) and 
>>> for basic MeetMe rooms (the videoswitch console command I uploaded 
>>> some time ago is used to enable/disable video sources). All the 
>>> instructions needed to build and configure it are attached with the 
>>> patch.
>>>
>>> To provide such a feature MeetMe can make use of two videomixers:
>>>
>>>     * the CONFIANCE VideoMixer we're writing (available on 
>>> http://confiance.sf.net/);
>>>     * the VideoMixer Sergio Garcia Murillo is writing (available via 
>>> svn, svn co http://sip.fontventa.com/svn/mcu, needs xmlrpc-c 1.1).
>>>
>>> You can choose which one to use by setting a value in the 
>>> configuration file. You can even disable them both and still rely on 
>>> basic videoswitching, if you're not interested in videomixing...
>>>
>>> All is work in progress, so both Sergio and I would really appreciate 
>>> any kind of feedback you'll be able to provide us.
>>>
>>> I'll spend two words on my work, and I'll let Sergio speak of his own 
>>> since I couldn't do it better than him. The CONFIANCE VideoMixer 
>>> currently provides:
>>>
>>>     * adaptive layouts according to how many active video sources are 
>>> feeding the mix;
>>>     * continuous presence for up to 8 users (this can be easily 
>>> enhanced by adding new layouts in the code; if you look at the code, 
>>> you'll see that creating and modifying layouts is really simple);
>>>     * a static logo when no video sources are active;
>>>     * support for H.261, H.263 and H.263+ (QCIF only for the moment).
>>>
>>> Currently, only one global layout is available for all users in the 
>>> same conference, but this will be changed in the future.
>>>
>>> We tested it with many softphones, as:
>>>
>>>     * Minisip, one the softphone we're enhancing to add XCON support, 
>>> and which makes use of H.263+ as codec;
>>>     * another custom client we're writing, making use of H.263 (JMF);
>>>     * X-Lite 3.0, H.263;
>>>     * Ekiga stable 2.0.x (H.261).
>>>
>>> All work quite fine except Ekiga, since H.261 support in our 
>>> videomixer is still quite buggy (probaby related to how we handle the 
>>> H,261 payload header), and sometimes makes Ekiga crash. Any feedback 
>>> upon this will be more than welcome!
>>>
>>>
>>> If you're interested in knowing something more about the 
>>> implementation details and/or how the videomixers have been 
>>> integrated in MeetMe, feel absolutely free to ask.
>>>
>>>
>>> Hope to hear you soon, regards,
>>> Lorenzo
>>>
>> _______________________________________________
>> --Bandwidth and Colocation provided by Easynews.com --
>>
>> asterisk-video mailing list
>> To UNSUBSCRIBE or update options visit:
>>   http://lists.digium.com/mailman/listinfo/asterisk-video
>>
> 
>