[h323plus] H.263 and H.264 at OpenMCU. Removing capability. Why?

HUB Netsky net.for.hub at gmail.com
Tue Nov 3 07:35:36 EST 2009


Hi, all.

I'm trying to set up an MCU server on SLES11 x64 with latest patches.
I've grabbed the latest snapshots of ptlib and opal libraries (from
http://opalvoip.svn.sourceforge.net) and latest h323plus and OpenMCU
(from http://h323plus.cvs.sourceforge.net). After successful
compilation with debug flags and a slight modification of Makefiles to
repair "make install", I'a able to launch openmcu. But it gives
messages like these in the startup log:
============ quote of openmcu startup =============
2009/11/03 15:00:37.682                 OpenMCU Debug2  H323    Found
capability: H.261-QCIF{sw} <25>
2009/11/03 15:00:37.683                 OpenMCU Debug2  H323
Removing capability: H.261-QCIF{sw} <25>
2009/11/03 15:00:37.684                 OpenMCU Debug2  H323    Found
capability: H.261{sw} <26>
2009/11/03 15:00:37.684                 OpenMCU Debug2  H323
Removing capability: H.261{sw} <26>
2009/11/03 15:00:37.685                 OpenMCU Debug2  H323    Found
capability: H.263{sw} <27>
2009/11/03 15:00:37.686                 OpenMCU Debug2  H323
Removing capability: H.263{sw} <27>
2009/11/03 15:00:37.687                 OpenMCU Debug2  H323    Found
capability: MPEG4{sw} <28>
2009/11/03 15:00:37.688                 OpenMCU Debug2  H323
Removing capability: MPEG4{sw} <28>
============ end of quote of openmcu startup =============
And when the final codec list is printed, it looks like this:
============ quote of openmcu startup =============
1:
   H.261-CIF{sw} <24>
2:
============ end of quote of openmcu startup =============
And like the last message shows, OpenMCU doesn't use h263 and MPEG-4
codecs, only H.261
Codecs for H.264 are compiled too and placed just near the other
(h261,h263) codecs, but aren't even being noticed by openmcu.
I've tried both with h323plus/plugins and opal/plugins by creating
symlinks to their ".so" files in "/usr/local/lib/ptlib" directory. The
same result, though many audio codecs from opal are being successfully
loaded.

The questions are:
1. Why openmcu removes capabilities that were successfuly found?
2. Why openmcu doesn't load plugins in the plugin dir?

Thanks for any response. Tell me, if any additional info is required.
-- 
HUB



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