December 2009 - h323plus - lists.packetizer.com

H264 PLUGIN in H323Plus
by ooi khai chin 19 Mar '10

19 Mar '10

Hi All, In my latest status, I able to have the conference with polycom and other softphone using H.264 plugin. But I face the problem of delaying (my movement only show on the other endpoint after around 5 seconds in local network). I think this problem occur because of fragmentation of 1 encoded picture that has size greater than 1.4KB to multiple slices, then sent it out. Currently, my default frame rate is 10fps. My question is how to solve the delaying problem because I see polycom PVX 8.0.2 and other softphone do not have any delay? Another question, If my default frame rate is 10fps, is it means that my program will call Codec Encode function 10 times in a second? As I know, inside the encode function, every time it will check for remanding frame length for last packet, if exist it repeatably packet it with size less than 1.4KB until finish, then it only start to encode a new frame. So, Let say I have one encoded picture that consist of 10 slices, is it means that I only able to sent one complete picture in 1 second (if my fps=10)? Thanks.

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Valid sessionID in OpenLogicalChannel command
by Igor Pavlov 18 Jan '10

18 Jan '10

Hi. I have problem when I reject OpenLogicalChannel (audio) while communicating with Tandberg T1000. In most cases Tandberg send me OpenLogicalChannel again with sessionID=0 so my application falls in assertion in file rtp.cxx line 760 : PAssert(id > 0 && id < 256, PInvalidParameter); I could not find valid value range for sessionID, but I don't like when application crashes in this case :( What can I do in this situation? Igor Pavlov

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H264 PLUGIN in H323plus
by ooi khai chin 24 Dec '09

24 Dec '09

Hi All, In my situation, I have set my marker to 1 when it is the last partial frame, And it able to display on the remote endpoint every frame I sent. The problem is it just delay around 5s for all frame picture. Why? I already do some testing on my x264 encoder, it can encode frame with acceptable speed, So it wouldn't be encoder problem. Thanks.

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Karl Ma has invited you to Dropbox
by Dropbox 21 Dec '09

21 Dec '09

We're excited to let you know that Karl Ma has invited you to Dropbox! Karl Ma has been using Dropbox to sync and share files online and across computers, and thought you might want it too. Visit http://www.dropbox.com/link/20.op9FTprDrn/NjY4MzAwMDk3 to get started. - The Dropbox Team ____________________________________________________ To stop receiving invites from Dropbox, please go to http://www.dropbox.com/bl/56c7d1c0a6d5/h323plus%40lists.packetizer.com

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Peer Element support in H323plus
by Hossein Aminaiee 13 Dec '09

13 Dec '09

Hi, We are trying to implement a gatekeeper with border element supported, such as the one in Tenor-Axx gatekeepers. I am curious to know whether it is supported by H323plus project or not. We have implemented the gatekeeper functionality with GnuGK and the platform is based on the latest version of Asterisk. Any advise is appreciated in advance. Thanks, Hossein Aminaiee

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GPL awareness week
by Jan Willamowius 07 Dec '09

07 Dec '09

Hi, as most of you probably know, the GNU Gatekeeper is covered by the GNU Public license (GPL v2). Using GnuGk commercially is fine and it is also no problem to include it into commercial offerings as long as long as the proper credit is given and the modified source code is made available. Usually this works out fine, but sometimes a vendor needs a friendly reminder. So I would like to start a "GPL awareness week" where we all keep an open eye which products include the GNU Gatekeeper and check if they give credit and if the source code is available. I started a page to publish the code patches from vendors who bundle GnuGk at http://www.gnugk.org/gnugk-bundle.html If you know more applications that ship with GnuGk or have questions about the licensing details, please contact me off list. Let make sure everybody who uses GnuGk knows about it and enjoys the full benefits that the GPL guarantees! Regards, Jan -- Jan Willamowius, jan(a)willamowius.de, http://www.gnugk.org/

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H264 PLUGIN in H323Plus
by ooi khai chin 07 Dec '09

07 Dec '09

Hi All, Currently, I would like to know how a NAL unit is organized inside an encoded data. Then, I read about the H.264 documentation, it mention about how to organize the NAL unit is outside of specification. So, anyone know any information or details on how the NAL organized? Thanks.

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H264PLUGIN in H323plus
by ooi khai chin 02 Dec '09

02 Dec '09

Hi All, Currently, my H.264 encoded data is generated from hardware, not using software encoder libx264. And that hardware API only return me the whole encoded data buffer, and it's total size. So, is there anyway to extract, format the whole encoded data into NAL slice(less than 1.4KB) manually? Thanks.

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H264 PLUGIN In H323Plus
by ooi khai chin 02 Dec '09

02 Dec '09

Hi All, I read about the RFC3984 for H.264, one of the type it can support is fragmentation Unit Mode(FU). In FU mode, the packet must add FU indicator(1 byte) and FU Header (1 byte). Indicator format F|NRI|TYPE Header format S|E|R|TYPE my question is why we need to include the NAL type twice in RTP packet of this (FU)mode? Thanks.

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compiling h323 on Fedora 12
by mimiller＠ncsa.illinois.edu 01 Dec '09

01 Dec '09

I've compiled PTLib on Fedora 12 and all went well. But when compiling h323, it can't find the ptlib files it needs. Below is a listing of what I did and some results along the way. Let me know what I'm doing wrong. thanks Michael 21 mkdir sources 22 cd sources/ 24 svn co http://opalvoip.svn.sourceforge.net/svnroot/opalvoip/ptlib/trunk ptlib 25 svn co http://opalvoip.svn.sourceforge.net/svnroot/opalvoip/opal/trunk opal 27 sudo yum install bison 28 sudo yum install flex cd ptlib 34 ./configure --enable-debug 35 make debug 36 sudo make install *******error can't find libpt_s.a 37 ls lib_linux_x86/ 40 cp lib_linux_x86/libpt_d_s.a lib_linux_x86/libpt_s.a 41 sudo make install *******PTLib appears to be installed in /usr/local/lib 42 cd .. 43 cd opal/ 46 export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig 48 export LD_LIBRARY_PATH=/usr/local/lib 49 export PTLIBPLUGINDIR=/usr/local/lib/ptlib-2.7.1 53 export PTLIBDIR=/usr/local/lib/ 54 ./configure --enable-debug ******* CXXFLAGS: -felide-constructors -Wreorder DEBUG: -L/usr/local/lib -lpt_d RELEASE: -L/usr/local/lib -lpt checking ptlib version... 2.7.1 configure: error: Could not find a linkable ptlib in specified environment to verify symbols (debug ptlib: yes) ******* 62 sudo ln -s /home/mimiller/sources/ptlib/lib_linux_x86 /usr/local/lib/ptlibdir 64 export PTLIBDIR=/usr/local/lib/ptlibdir 65 cd ~/sources/opal/ 66 ./configure --enable-debug ******* CXXFLAGS: -felide-constructors -Wreorder DEBUG: -L/usr/local/lib -lpt_d RELEASE: -L/usr/local/lib -lpt checking ptlib version... 2.7.1 configure: error: Could not find a linkable ptlib in specified environment to verify symbols (debug ptlib: yes) ******* 77 export PTLIBDIR=/usr/local/lib 78 ./configure --enable-debug ******* CXXFLAGS: -felide-constructors -Wreorder DEBUG: -L/usr/local/lib -lpt_d RELEASE: -L/usr/local/lib -lpt checking ptlib version... 2.7.1 configure: error: Could not find a linkable ptlib in specified environment to verify symbols (debug ptlib: yes) ******* 80 sudo cp /home/mimiller/sources/ptlib/lib_linux_x86/*.* /usr/local/lib/ptlib-2.7.1/ 83 export PTLIBDIR=/usr/local/lib/ptlib-2.7.1 84 set 85 ./configure --enable-debug ******* CXXFLAGS: -felide-constructors -Wreorder DEBUG: -L/usr/local/lib -lpt_d RELEASE: -L/usr/local/lib -lpt checking ptlib version... 2.7.1 configure: error: Could not find a linkable ptlib in specified environment to verify symbols (debug ptlib: yes) ******* 106 cvs -d:pserver:anonymous@h323plus.cvs.sourceforge.net:/cvsroot/h323plus login 110 cvs -z3 -d:pserver:anonymous@h323plus.cvs.sourceforge.net:/cvsroot/h323plus co h323plus 112 cvs -z3 -d:pserver:anonymous@h323plus.cvs.sourceforge.net:/cvsroot/h323plus co extensions 113 cvs -z3 -d:pserver:anonymous@h323plus.cvs.sourceforge.net:/cvsroot/h323plus co applications 115 export PTLIBDIR=/usr/local/lib 116 cd h323plus/ ******* configure: gcc version is 4.4.2 checking if gcc version is valid... yes checking for working bit scan intrinsic... yes configure: Opal version is 3.7.1 checking where plugins are being installed... /usr/local/lib/opal-3.7.1 checking wether to build a shared library... yes checking build system type... i686-pc-linux-gnu checking host system type... i686-pc-linux-gnu checking target system type... i686-pc-linux-gnu checking Debugging support... no Found PTLIB in PTLIBDIR /home/mimiller/sources/ptlib/ Version: 2.7.1 CFLAGS: -DPTRACING=1 -D_REENTRANT -fno-exceptions -I/usr/local/include CXXFLAGS: -felide-constructors -Wreorder DEBUG: -L/usr/local/lib -lpt_d RELEASE: -L/usr/local/lib -lpt checking ptlib version... 2.7.1 configure: error: Could not find a linkable ptlib in specified environment to verify symbols (debug ptlib: no) ******* 118 ./configure 119 export PTLIBDIR=/home/mimiller/sources/ptlib/ 120 ./configure ******* configure: gcc version is 4.4.2 checking if gcc version is valid... yes checking for working bit scan intrinsic... yes configure: Opal version is 3.7.1 checking where plugins are being installed... /usr/local/lib/opal-3.7.1 checking wether to build a shared library... yes checking build system type... i686-pc-linux-gnu checking host system type... i686-pc-linux-gnu checking target system type... i686-pc-linux-gnu checking Debugging support... no Found PTLIB in PTLIBDIR /home/mimiller/sources/ptlib/ Version: 2.7.1 CFLAGS: -DPTRACING=1 -D_REENTRANT -fno-exceptions -I/usr/local/include CXXFLAGS: -felide-constructors -Wreorder DEBUG: -L/usr/local/lib -lpt_d RELEASE: -L/usr/local/lib -lpt checking ptlib version... 2.7.1 configure: error: Could not find a linkable ptlib in specified environment to verify symbols (debug ptlib: no) ******* "If you're clear in your vision and trust the people in your team with clear objectives, they will invariably do their best to achieve everything desired, and usually deliver everything you could have hoped for and even more." -Paul Debevec "If you're clear in your vision and trust the people in your team with clear objectives, they will invariably do their best to achieve everything desired, and usually deliver everything you could have hoped for and even more." -Paul Debevec

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