[Asterisk-video] Videomixing in MeetMe
Lorenzo Miniero
lorenzo.miniero at unina.it
Fri Jun 15 09:41:14 CDT 2007
Hi Klaus,
the prefix you see there is for XCON-compliant conferences, i.e. for
conferences with BFCP support, and they are created and configured in
another configuration file (xcon.conf).
However, if you are using a softphone which is not our enhanced Minisip,
you should use normal MeetMe conferences instead, since otherwise you
wouldn't be able to exploit the new protocols anyway. Normal MeetMe
conferences are added as usual in meetme.conf.
So, just enable a voice in the dialplan for the default meetme conference:
exten => 8600,1,MeetMe(1234)
and have your clients call that number to test the videomixer. To enable
and disable users' video use the videoswitch command:
videoswitch conf user (e.g. videoswitch 1234 1)
Let me know what you think of it, regards!
Lorenzo
> Hi Lorenzo!
>
> using "./configure --enable-libogg --enable-libvorbis --enable-gpl
> --enable-shared --enable-swscaler" worked for then. Then I only had to
> uncomment -lswscale in the make and linking was fine. Starting was also
> fine and when Asterisk started it connected to the videomixer:
>
> CVM_CLI*> New client connected (127.0.0.1:36218)
>
> Also the status in Asterisk looks fine:
> samuel*CLI> xcon info
> samuel*CXCON prefix 867xxxx
> BFCP Server listening on port 2345 (TCP/BFCP)
> BFCP Server List active with max 10 conferences allowed (0 active).
> XconScheduler Server listening on port 2346
> Remote Confiance VideoMixer listening on 127.0.0.1:7000
>
>
> I added the extensions:
> [xcon]
> ; XCON through MeetMe: example of wildcards to add flexibility
> ; - First 7 numbers = conference
> ; - Next (1-4) numbers = PIN (Phone PIN, not Admin's password)
> ;
> ; the 'B' flag tells MeetMe this is an XCON conference (B => BFCP)
> ;
> exten => _867.,1,Meetme(${EXTEN:0:7}|B|${EXTEN:7})
> exten => _867.,2,Hangup
> ;
> ; XconScheduler
> ;
> exten => 868,1,Answer
> exten => 868,2,XconScheduler()
> exten => 868,3,Hangup
> ;
>
>
> But if I call a conference room (e.g. 8671234) I only get "That is not a
> valid conference number":
>
> -- Executing [8671234 at from_sipphones:1] MeetMe("SIP/201-0823cf88",
> "8671234|B|") in new stack
> == Parsing '/etc/asterisk/xcon.conf': Found
> -- <SIP/201-0823cf88> Playing 'conf-invalid' (language 'en')
>
>
> I also tried adding the conference room to meetme.conf:
> conf => 8671234
> conf => 1234
>
> But the same result: "That is not a vlaid conference number"
>
>
> any hints?
>
> thanks
> klaus
>
> Lorenzo Miniero wrote:
>> PS: if it can be of help, these are the settings I configured FFmpeg
>> with, and which surely work:
>>
>> FFmpeg version SVN-r8380, Copyright (c) 2000-2007 Fabrice Bellard, et al.
>> configuration: --prefix=/usr --enable-libfaac --enable-libgsm
>> --enable-libmp3lame --enable-xvid --enable-x264 --enable-libogg
>> --enable-libvorbis --enable-libtheora --enable-gpl --enable-shared
>> --enable-libfaad --enable-swscaler --cross-prefix=/usr/bin/
>> libavutil version: 49.4.0
>> libavcodec version: 51.40.4
>> libavformat version: 51.12.1
>> built on May 29 2007 10:54:40, gcc: 4.1.1 20070105 (Red Hat 4.1.1-51)
>>
>> Cheers,
>> Lorenzo
>>
>>
>> Klaus Darilion ha scritto:
>>> Hi Lorenzo!
>>>
>>> Now with ortp 0.13.1 and adding -lavutil:
>>>
>>> darilion at samuel:/export/darilion/confiance/confiance_videomixer-0.1$ make
>>> gcc -ggdb -o cvm.o -c cvm.c -Wall -Wstrict-prototypes
>>> -Wmissing-prototypes -Wmissing-declarations -O2
>>> gcc -ggdb -o cvm_protocol.o -c cvm_protocol.c -Wall -Wstrict-prototypes
>>> -Wmissing-prototypes -Wmissing-declarations -O2
>>> gcc -ggdb -o cvm_session.o -c cvm_session.c -Wall -Wstrict-prototypes
>>> -Wmissing-prototypes -Wmissing-declarations -O2
>>> gcc -ggdb -o confiance_vm cvm.o cvm_protocol.o cvm_session.o -Wall
>>> -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -O2
>>> -lortp -lavcodec -lavformat -lavutil -lpthread
>>> /usr/local/lib/libavformat.a(utils.o)(.text+0x2947): In function
>>> `av_find_stream_info':
>>> /export/darilion/confiance/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':
>>> /export/darilion/confiance/ffmpeg/libavformat/allformats.c:47: undefined
>>> reference to `avcodec_register_all'
>>> /usr/local/lib/libavformat.a(raw.o)(.text+0xb3c): In function `ac3_probe':
>>> /export/darilion/confiance/ffmpeg/libavformat/raw.c:435: undefined
>>> reference to `ff_ac3_parse_header'
>>> /usr/local/lib/libavformat.a(mov.o)(.text+0x213b): In function
>>> `mov_read_cmov':
>>> /export/darilion/confiance/ffmpeg/libavformat/mov.c:1136: undefined
>>> reference to `uncompress'
>>> /usr/local/lib/libavformat.a(mp3.o)(.text+0x92): In function
>>> `mp3_read_probe':
>>> /export/darilion/confiance/ffmpeg/libavformat/mp3.c:410: undefined
>>> reference to `ff_mpa_decode_header'
>>> collect2: ld returned 1 exit status
>>>
>>>
>>> I tried to change the order of the ffmpeg libraries during linking, but
>>> then other errors occour.
>>>
>>>
>>> regards
>>> kalus
>>>
>>> Lorenzo Miniero wrote:
>>>> Hi Klaus,
>>>>
>>>> first of all thanks for giving the videomixer a try!
>>>>
>>>> libortp4 must be really updated, since the latest version of oRTP is
>>>> 0.13.1, which is the one I'm using. In case you don't find a deb
>>>> package, you can get the source here:
>>>>
>>>> http://download.savannah.nongnu.org/releases/linphone/ortp/sources/
>>>>
>>>> About FFmpeg, the LIBS variable is probably missing a -lavutil. Try
>>>> adding it after -lavformat. Let me know if it fixes the problem and I'll
>>>> correct it in the package too.
>>>>
>>>> Cheers,
>>>> Lorenzo
>>>>
>>>>
>>>> Klaus Darilion ha scritto:
>>>>> 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
>>>>>>>>
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--
Lorenzo Miniero, Junior Researcher
Dipartimento di Informatica e Sistemistica
Università degli Studi di Napoli "Federico II"
Via Claudio 21 -- 80125 Napoli (Italy)
Phone: +390817683821 - Fax: +390817683816
Email: lorenzo.miniero at unina.it
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