November 2011 - h323plus - lists.packetizer.com

Removing H.263/H.264 Capabilities in OpenMCU
by Victor Zanozin 30 Nov '11

30 Nov '11

Hi guys, I'm getting stuck with OpenMCU loading, and only starting the H.261 codecs. It seems it can detect H.263/H.264, but removes them shortly after detection, and then only shows one set of codecs in the video section of the startup. Logs: 0:00.030 OpenMCU H323 Found capability: H.239 Capabilities <18> H.263{sw} <1> 0:00.030 OpenMCU H323 Removing capability: H.239 Capabilities <18> H.263{sw} <1> 0:00.030 OpenMCU H323 FindCapability: "H.239 Capabilities" 0:00.030 OpenMCU H323 FindCapability: "*-QCIF*" 0:00.030 OpenMCU H323 Found capability: H.261-QCIF{sw} <14> 0:00.030 OpenMCU H323 Removing capability: H.261-QCIF{sw} <14> 0:00.030 OpenMCU H323 FindCapability: "*-QCIF*" 0:00.030 OpenMCU H323 FindCapability: "*-SQCIF*" 0:00.030 OpenMCU H323 FindCapability: "H.261{sw}" 0:00.030 OpenMCU H323 Found capability: H.261{sw} <15> 0:00.030 OpenMCU H323 Removing capability: H.261{sw} <15> 0:00.030 OpenMCU H323 FindCapability: "H.261{sw}" 0:00.030 OpenMCU H323 FindCapability: "H.263{sw}" 0:00.030 OpenMCU H323 Found capability: H.263{sw} <16> 0:00.030 OpenMCU H323 Removing capability: H.263{sw} <16> 0:00.030 OpenMCU H323 FindCapability: "H.263{sw}" 0:00.030 OpenMCU H323 FindCapability: "H.264{sw}" 0:00.031 OpenMCU H323 Found capability: H.264{sw} <17> 0:00.031 OpenMCU H323 Removing capability: H.264{sw} <17> Codecs loaded: 1: H.261-CIF{sw} <13> I'm also seeing no split screen video - When new endpoints join, video on the first endpoint freezes, and the new endpoint is not displayed until either endpoint disconnects, then it switches back to whichever endpoint is still connected and video resumes. Can anyone help? Thanks! Victor

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Text messaging in H323plus
by J.C Mercier 29 Nov '11

29 Nov '11

Hi all, first of all, thank you very much for all your kind help and suggestions. I am working with the simple application that comes with H323plus and I was wondering if H323plus supports sending text messages without being in a call. I know with previous versions of h323 this was not possible unless you did some sort of work around. Thanks Josh

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Negotiate /Renegotiate video channel during call
by J.C Mercier 26 Nov '11

26 Nov '11

Hi all, Does anyone know if it's possible in H323plus renegotiate for video channel during a call? For instance, let's say I started an audio only call and the remote party is sending either audio only or both audio and video, is there a way for me start sending my video as the call is already in progress? And also, if i'm in a video call (sending my video) and i want to switch to audio only by stopping video (my video transmission) while the call is in progress, how would go about doing that? If this is not supported, what approach is supported in H323plus? Thanks in advance for your help. Josh C.

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[FIX] SegFault with H323plus with PTLIB 2.10, 2.11 on windows at call end
by Simon Horne 25 Nov '11

25 Nov '11

An important fix has been committed to the ptlib SVN to fix a bug in windows where nonAutoDelete threads where autoDeleting causing strange segfault at the end of a call. If you are experiencing the issue please apply this patch. http://opalvoip.svn.sourceforge.net/viewvc/opalvoip/ptlib/trunk/src/ptlib/ms os/win32.cxx?r1=26095 <http://opalvoip.svn.sourceforge.net/viewvc/opalvoip/ptlib/trunk/src/ptlib/m sos/win32.cxx?r1=26095&r2=26698> &r2=26698 Thanks to Josh Mercier for debugging this and getting it fixed in ptlib. Simon

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OpenMCU not using video codecs
by Victor Zanozin 24 Nov '11

24 Nov '11

Hi everyone, I'm having a lot of trouble setting up an OpenMCU server on either FreeBSD/Ubuntu (Ubuntu preferred). On FreeBSD, after all the packages are installed I am seemingly limited to H.261 - The endpoints are capable of H.263/264, however I cannot get OpenMCU to use this codec. On Ubuntu (my preferred system) OpenMCU preferences report the use of the G711 audio codecs, but do not even use the H.261 video codecs. There is no video output to any of the endpoints. I think it might have to do with the codec installation on Ubuntu - How can I check if these are installed properly? When I try to configure the h323plus install, I get the following: =================== Plugin configuration ====================== prefix : /usr/local exec_prefix : ${prefix} libdir : ${exec_prefix}/lib Audio Codec plugin install dir : ${libdir}/opal-1.23.0/codecs/audio Video Codec plugin install prefix: ${libdir}/opal-1.23.0/codecs/video LID plugin install prefix : ${libdir}/opal-1.23.0/lid FAX plugin install prefix : ${libdir}/opal-1.23.0/fax GSM : yes (internal) gsm-amr : yes iLBC : yes (internal) Speex : yes (internal, version 1.1.11.1) LPC10 : yes G.726 : yes IMA_ADPCM : yes SBC : no H.261 : yes H.263 : no (ffmpeg version) H.263/H.263+ : no H.264 : no THEORA : yes MPEG4 Part 2 : no CELT : no SpanDSP FAX : no CAPI : no Quicknet xJACK support : no Voicetronics VPB support : yes OS Type : linux-gnu Machine Type : i686 If all settings are OK, type make and make install ======================================================== Level 5 debug logs show: 0:00.034 OpenMCU MCU Codecs (in preference order): Table: G.711-ALaw-64k <1> G.711-uLaw-64k <2> UserInput/hookflash <3> UserInput/basicString <4> UserInput/dtmf <5> UserInput/RFC2833 <6> UserInput/Navigation <7> UserInput/Softkey <8> UserInput/PointDevice <9> UserInput/Modal <10> Set: 0: 0: G.711-ALaw-64k <1> G.711-uLaw-64k <2> 1: 2: UserInput/hookflash <3> UserInput/basicString <4> UserInput/dtmf <5> UserInput/RFC2833 <6> UserInput/Navigation <7> UserInput/Softkey <8> UserInput/PointDevice <9> UserInput/Modal <10> There seem to be no video codecs being found or loaded... I'm running the latest version of everything from the h323plus.org site, OpenMCU 2.2.5-1, h323plus 1.23.0. I've added what I believe to be the video codec directories in the following locations (yes, it's a mess): /usr/local/lib/opal-1.23.0/plugins/video /usr/local/lib/opal-1.23.0/codecs/video /usr/local/lib/opal-1.23.0/codecs/video/video /usr/local/lib/opal-1.23.0/temp/plugins/video /usr/local/lib/opal-1.23.0/video /usr/lib/ptlib/plugins/video /usr/lib/ptlib/codecs/video /usr/lib/ptlib/video /usr/lib/ptlib-2.4.5/plugins/video The contents of these are: root@OpenMCU:/usr/lib/ptlib/codecs/video# ls common H.261-vic H.263-1998 H.263-ffmpeg H.264 I'm also seemingly missing the H.264 codec: configure: h264 support disabled due to disabled dependency HAVE_H264_DECODER checking enable H.264 support... no Can anyone shed some light on this? Thanks! Victor

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Re: [h323plus] OpenMCU not using video codecs
by Simon Horne 24 Nov '11

24 Nov '11

Sorry It should be avcore-dev So it should look like sudo apt-get install libavcodec-dev libavformat-dev libavcore-dev Thanks Simon From: Miller, Michael B [mailto:myk@illinois.edu] Sent: 25 November 2011 04:28 To: Simon Horne Subject: Re: [h323plus] OpenMCU not using video codecs Simon, In the H.263 instructions, you list libavcodec-dev twice. Is that correct? or is there a 3rd dependency? thanks, Michael Miller System Engineer NCSA 217 649 0747 "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 On Nov 24, 2011, at 12:14 PM, Simon Horne wrote: Victor Video codecs are plugins (external libraries) and H.263 and H.264 have dependencies that are required before they will build. H.261 No dependencies. Make sure your copy the plugin to the same directory (or subDir) as the executable or set the PTLIBPLUGINDIR environmental variable to point to where the *plugin.so resides. H.263 Dependency FFMPEG for debian based systems sudo apt-get install libavcodec-dev libavformat-dev libavcodec-dev Goto H.261 H.264 Dependency FFMPEG (decode) and X264 (encode) for debian based systems sudo apt-get install libx264-dev Goto H.263 Rerun ./configure and the codecs should then be available. Do a Make and the the *plugin.so should be in the h323plus/plugins directory. Copy them from there. H.264 also has a *helper.so file which needs to be copied as well. This *MUST* be in the same directory as the executable. It does not understand the PTLIBPLUGINDIR environmental variable. You should then be good to go. To debug the codecs set the environmental variable PTLIB_TRACE_CODECS=4 You should see in the console the initial tests to check that all the dependencies are found at startup. Simon From: h323plus-bounces(a)lists.packetizer.com [mailto:h323plus-bounces@lists.packetizer.com] On Behalf Of Victor Zanozin Sent: 24 November 2011 16:41 To: h323plus(a)lists.packetizer.com Subject: [h323plus] OpenMCU not using video codecs Hi everyone, I'm having a lot of trouble setting up an OpenMCU server on either FreeBSD/Ubuntu (Ubuntu preferred). On FreeBSD, after all the packages are installed I am seemingly limited to H.261 - The endpoints are capable of H.263/264, however I cannot get OpenMCU to use this codec. On Ubuntu (my preferred system) OpenMCU preferences report the use of the G711 audio codecs, but do not even use the H.261 video codecs. There is no video output to any of the endpoints. I think it might have to do with the codec installation on Ubuntu - How can I check if these are installed properly? When I try to configure the h323plus install, I get the following: =================== Plugin configuration ====================== prefix : /usr/local exec_prefix : ${prefix} libdir : ${exec_prefix}/lib Audio Codec plugin install dir : ${libdir}/opal-1.23.0/codecs/audio Video Codec plugin install prefix: ${libdir}/opal-1.23.0/codecs/video LID plugin install prefix : ${libdir}/opal-1.23.0/lid FAX plugin install prefix : ${libdir}/opal-1.23.0/fax GSM : yes (internal) gsm-amr : yes iLBC : yes (internal) Speex : yes (internal, version 1.1.11.1) LPC10 : yes G.726 : yes IMA_ADPCM : yes SBC : no H.261 : yes H.263 : no (ffmpeg version) H.263/H.263+ : no H.264 : no THEORA : yes MPEG4 Part 2 : no CELT : no SpanDSP FAX : no CAPI : no Quicknet xJACK support : no Voicetronics VPB support : yes OS Type : linux-gnu Machine Type : i686 If all settings are OK, type make and make install ======================================================== Level 5 debug logs show: 0:00.034 OpenMCU MCU Codecs (in preference order): Table: G.711-ALaw-64k <1> G.711-uLaw-64k <2> UserInput/hookflash <3> UserInput/basicString <4> UserInput/dtmf <5> UserInput/RFC2833 <6> UserInput/Navigation <7> UserInput/Softkey <8> UserInput/PointDevice <9> UserInput/Modal <10> Set: 0: 0: G.711-ALaw-64k <1> G.711-uLaw-64k <2> 1: 2: UserInput/hookflash <3> UserInput/basicString <4> UserInput/dtmf <5> UserInput/RFC2833 <6> UserInput/Navigation <7> UserInput/Softkey <8> UserInput/PointDevice <9> UserInput/Modal <10> There seem to be no video codecs being found or loaded. I'm running the latest version of everything from the h323plus.org site, OpenMCU 2.2.5-1, h323plus 1.23.0. I've added what I believe to be the video codec directories in the following locations (yes, it's a mess): /usr/local/lib/opal-1.23.0/plugins/video /usr/local/lib/opal-1.23.0/codecs/video /usr/local/lib/opal-1.23.0/codecs/video/video /usr/local/lib/opal-1.23.0/temp/plugins/video /usr/local/lib/opal-1.23.0/video /usr/lib/ptlib/plugins/video /usr/lib/ptlib/codecs/video /usr/lib/ptlib/video /usr/lib/ptlib-2.4.5/plugins/video The contents of these are: root@OpenMCU:/usr/lib/ptlib/codecs/video# ls common H.261-vic H.263-1998 H.263-ffmpeg H.264 I'm also seemingly missing the H.264 codec: configure: h264 support disabled due to disabled dependency HAVE_H264_DECODER checking enable H.264 support... no Can anyone shed some light on this? Thanks! Victor

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Re: [h323plus] Need help to run oh323tut application using ALSA
by Simon Horne 21 Nov '11

21 Nov '11

Abdul Moiz Sorry for the delay in replying. I have been travelling. In your derived OpenAudioChannel PBoolean H323EndPoint::OpenAudioChannel(H323Connection & connection,PBoolean isEncoding, unsigned bufferSize, H323AudioCodec & codec); The second parameter isEncoding specifies the direction of the channel (true = transmit, false=receive). This function is called once for each direction. To only transmit or receive then return false for the function for the direction you do not wish to open. Simon From: ABDUL MOIZ [mailto:abdulmoiz786@gmail.com] Sent: 17 November 2011 19:49 To: Simon Horne Subject: Re: [h323plus] Need help to run oh323tut application using ALSA Hi, Is it possible to enable opening of only one audio channel say for transmitting in caller application and only one audio channel for receving in listener application? In the present scenario, there are 2 audio channels being opened, one for transmitting and the other for receiving.Can I configure to open only one channel for transmitting/receiving? Regards Abdul Moiz On Fri, Nov 11, 2011 at 4:53 PM, Simon Horne <s.horne(a)packetizer.com> wrote: Try simple -h To bring up the switch list See "P-prefer:" So simple -ln -PH.263,G.711 Will make H.263 and G.711 default Simon From: ABDUL MOIZ [mailto:abdulmoiz786@gmail.com] Sent: 11 November 2011 17:15 To: Simon Horne Subject: Re: [h323plus] Need help to run oh323tut application using ALSA Hi, Can you please tell me how to change the default audio/video codecs in simph323 application. Thanks, Abdul Moiz On Thu, Nov 10, 2011 at 2:54 PM, Simon Horne <s.horne(a)packetizer.com> wrote: Apply this patch http://h323plus.cvs.sourceforge.net/viewvc/h323plus/h323plus/samples/simple/ main.cxx?r1=1.4 <http://h323plus.cvs.sourceforge.net/viewvc/h323plus/h323plus/samples/simple /main.cxx?r1=1.4&r2=1.5> &r2=1.5 Enable environmental variable PTLIB_TRACE_CODECS=4 When running simple you will be able see the directories it searches for the X264 helper. Simon From: h323plus-bounces(a)lists.packetizer.com [mailto:h323plus-bounces@lists.packetizer.com] On Behalf Of ABDUL MOIZ Sent: 10 November 2011 17:07 To: h323plus(a)lists.packetizer.com; s.horne(a)packetizer.com Subject: Re: [h323plus] Need help to run oh323tut application using ALSA Hi, I have copied h26x_pwplugin.so and h264_video_pwplugin_helper files in my simph323 application directory and when I run the applications, after call establishment , the "listener" application is hanging up at the function ((PVideoInputDevice *)device)->GetDeviceCapabilities(deviceName,deviceDriver,&videoCaps) and the "caller" application is giving the error: H323> ERROR: H.264 plugin couldn't find GPL process executable: h264_video_pwplugin_helper and therefore video channel is not being opened. Can you please help me to solve the above problem. Regards Abdul Moiz On Thu, Nov 3, 2011 at 8:55 PM, Simon Horne <s.horne(a)packetizer.com> wrote: You build the plugin codecs in the plugin directory that is part of h323plus. Ie h323plus/plugins Look for h26x_ptplugin.so Simon From: ABDUL MOIZ [mailto:abdulmoiz786@gmail.com] Sent: 04 November 2011 00:05 To: Simon Horne Subject: Re: [h323plus] Need help to run oh323tut application using ALSA Hi, On Thu, Nov 3, 2011 at 5:51 PM, Simon Horne <s.horne(a)packetizer.com> wrote: You build the plugin codecs in the plugin directory. They are separate files. Look for *_ptplugin.so I have alsa and v4l2 plugin file names as alsa_pwplugin.so and v4l2_pwplugin.so respectively. I have copied the above plugin files into my application directory, but still video tranfers is not happening. Apply this patch http://h323plus.cvs.sourceforge.net/viewvc/h323plus/h323plus/samples/simple/ main.cxx?r1=1.4 <http://h323plus.cvs.sourceforge.net/viewvc/h323plus/h323plus/samples/simple /main.cxx?r1=1.4&r2=1.5> &r2=1.5 By applying above patch, the code is not being hanged up now.But still video transfer is not happening. After some debugging of code, I have found that the function SimpleH323EndPoint::OpenVideoChannel(...) is not being called. Thereby video channel is not being created and video transfer is not happening. So I want to know whether simph323 application (out of the box) does video transfers? (or) Do I need to add the videocodec interface in the code so that the above said function may be called? If so can you please send me the required code snippets. Thanks Simon From: ABDUL MOIZ [mailto:abdulmoiz786@gmail.com] Sent: 03 November 2011 19:54 To: Simon Horne Subject: Re: [h323plus] Need help to run oh323tut application using ALSA Hi, I have found that v4l2 plugin is already built.And I have used the variable PTLIBPLUGINDIR to point it to the directory containing plugin. But still, I am unable to get Video transfers. When I started debugging, I found that the simph323 application program flow is being hanged up at the function call PVideoInputDevice::GetDeviceCapabilities(devices[0],inputDriverName,&caps) in main.cxx file. Can you please help me in giving correct options while executing the application. or any other suggestions to get Video transfers Below are the options I am giving presently $ ./simph323 -l -n -u listener -i 192.1.4.1 -x 6000 -v V4L2 $ ./simph323 -n -u caller -i 192.1.4.2 -x 5000 -v V4L2 listener@192.1.4.1:6000 My system is X86 , running ubuntu 10.04 Regards, Abdul Moiz On Thu, Nov 3, 2011 at 12:41 PM, Simon Horne <s.horne(a)spranto.com> wrote: Video is enabled via plugins, Build the plugins and place them in the same directory as the application. You can also use the environmental variable PTLIBPLUGINDIR to point to the directory where the video/audio plugins are. Simon From: ABDUL MOIZ [mailto:abdulmoiz786@gmail.com] Sent: 03 November 2011 16:54 To: Simon Horne; h323plus(a)lists.packetizer.com Subject: Re: [h323plus] Need help to run oh323tut application using ALSA Hi, I am using simph323 application (i.e running two instances one as caller and the other as listener) and able to transfer only "Audio". Is it possible to transfer "Video" and "Data" also using simph323 application and if so how to give the command line options for the 2 instances (i.e caller and listener) Or else can anybody suggest me if there is any better application/example to transfer Audio,Video and Data simultaneously. Regards, Abdul Moiz On Wed, Nov 2, 2011 at 3:41 AM, Simon Horne <s.horne(a)packetizer.com> wrote: Abdul Moiz There are no specific ALSA examples. However there are a number of same applications contained in the Applications download from the website. Simon From: ABDUL MOIZ [mailto:abdulmoiz786@gmail.com] Sent: 01 November 2011 12:39 To: Simon Horne Subject: Re: [h323plus] Need help to run oh323tut application using ALSA Hi simon, Thanks for your response. I am a beginner in this field. I am looking for sample examples/applications which establishes H.323 call and tranfers video,audio and data across 2 systems. Can you please tell me where can I find the latest sample applications (for Video,Audio and Data) or the related information/document for development of such applications Regards, Abdul Moiz On Fri, Oct 28, 2011 at 8:34 PM, Simon Horne <s.horne(a)packetizer.com> wrote: Abdul Moiz Oh323tut is getting quite old but here are some tips to get and set the Audio Driver and Device Name Get the drivers PStringArray names = PSoundChannel::GetDriverNames(); Get the devices PString DefaultAudioDriver = names[0]; PStringArray playDevices = PSoundChannel::GetDeviceNames(DefaultAudioDriver,PSoundChannel::Player); PStringArray recDevices = PSoundChannel::GetDeviceNames(DefaultAudioDriver,PSoundChannel::Recorder); Enumerate the devices for (PINDEX i = 0; i < playDevices.GetSize(); i++) { cout << playDevices[i] << endl; } To set the driver call these functions PBoolean H323EndPoint::SetSoundChannelPlayDriver(const PString & name) PBoolean H323EndPoint::SetSoundChannelRecordDriver(const PString & name) To set the device call these functions PBoolean H323EndPoint::SetSoundChannelPlayDevice(const PString & name) PBoolean H323EndPoint::SetSoundChannelRecordDevice(const PString & name) Simon From: h323plus-bounces(a)lists.packetizer.com [mailto:h323plus-bounces@lists.packetizer.com] On Behalf Of ABDUL MOIZ Sent: 28 October 2011 17:15 To: h323plus(a)lists.packetizer.com Subject: [h323plus] Need help to run oh323tut application using ALSA Hi, I have downloaded the source code of "h323plus core"(version:1.23.0) and "PTlib"(version:2.10.1) from the link: http://www.h323plus.org/source/ on my X86 Desktop system running ubuntu 10.04 I have followed the tutorial given at link http://toncar.cz/openh323/tut/index.html I am able to compile both the source codes without any problems. Then I have downloaded and compiled "oh323tut" (version 1.1-1) source code from the link below: http://toncar.cz/openh323/tut/files.html I have got simph323 installed on my system using $ sudo apt-get install simph323 Now when I try to run oh323tut application and simph323 application (in separete terminals) using the commands below: $ ./oh323tut -f audio.wav -n -u 320 $ simph323 -n -u 321 320@127.0.0.1:1820 I am getting the following problem: H323> Could not open sound device Default - Check permissions or full duplex capability. Can anybody please help to solve the above problem. Regards

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Need help to get latest version of ohphone application
by ABDUL MOIZ 16 Nov '11

16 Nov '11

Hi, Can anyone please send me the link to download latest version of ohphone application (which can be compiled with h323plus library) for Linux. Regards, Abdul Moiz

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Current stable version issues
by J C Mercier 15 Nov '11

15 Nov '11

Hi all, I have downloaded the current stable version of H323plus and ptlib on the H323plus website, as well as the trunk versions of both and I seem to be having a few problems with them. Having compiled them on both windows xp and windows 7 using visual studio 2008, both versions compiled with no errors. My problems are as follows; 1. After first compiling the stable versions, I tried compiling the simpleh323 example which also compiles fine but when making a video call (using the h.623 codec), both side seemed to be sending a green background. I traced this issue in ptlib - directshow.cxx PVideoInputDevice_DirectShow::PlatformOpen() ... And commented out mt.subtype = MEDIASUBTYPE_RGB24 this fixes that issue but I was wondering why it was used. 2. My second problem, when ending a video call between two simpleh323 endpoint, the called party crashes dues to an invalid memory access violation while trying to access the thread object in; transports.cxx function: H323Transport::CleanUpOnTermination(). this is the case for both the current stable as well as the trunk versions of H323plus, tested with ptlib from version 2.9 up to the current trunk version. The issue seems to go away when tested with ptlib v2.8.2 through 2.8.5 inclusively. I've tried tracing to see why the thread becomes invalid, I can't exactly figure out the cause but it seems the thread object may be automatically deleted at some point. 3. My last problem is with the trunk version of H333plus. It complies with no errors, but when compiling the provided sample, I receive a bunch of unresolved errors due to h460.17/18 etc. I have not thoroughly looked into this but disabling H323_H460 seems to solve this for now. All these tests were performed on windows xp as well as windows 7 using visual studio 2008 pro. Your help with these issues will be greatly appreciated. JC

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Clang build fix
by ojab 15 Nov '11

15 Nov '11

Hello, you can find the patch that allows h323plus to be build with clang++ in the attached file, please apply. //wbr ojab

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