April 2009 - h323plus - lists.packetizer.com

Re: [h323plus] Add h.264 capacity
by Paul E. Jones 04 May '09

04 May '09

Greg, I've copied the H323 Plus mailing list. I suspect somebody on there, either the H323 Plus or Opal team members, will be able to address your question. Paul > -----Original Message----- > From: guillemin [mailto:winnyzeboss1@hotmail.com] > Sent: Tuesday, April 28, 2009 10:07 PM > To: h323forum(a)mail.imtc.org > Subject: [h323forum] Add h.264 capacity > > Hello all, > > I'm a french student working on a H.323 application for > videoconferencing and I'd like to know how to send video in H.264 on > the main channel. Do I just need the DLL of Opal? In this case can you > help me because I do not manage to build it. > > Thanks, > Greg

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Difference b/w FACILITY and EMPTY messages
by prashant patel 30 Apr '09

30 Apr '09

Hi All, I would like to know the difference between FACILITY and EMPTY message. While doing TUNNELING I am getting OLC body through EMPTY header(H225). Can I use FACILITY method instead of EMPTY. Thanks, Prashant "Save Tree Save Humanity"

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Cannot set codec video mode
by Zack Tidwell 24 Apr '09

24 Apr '09

Hello, I have video call application using h323plus v 1.20.1 and PTLIB v 2.0.1. I am using the Vic H.261 codec V 1.20.0. I am trying to set the codec video mode to either AdaptivePacketDelay or DynamicVideoQuality in the OpenVideoChannel callback when isEncoding is true. However, after I set it, codec.GetVideoMode always returns 0. Furthermore, as far as I can tell, I am unable to set any other codec options, such as max bitrate, TxQualityLevel, or TargetFrameTimeMS. This is the same place I was calling SetVideoMode back when the application used OpenH323. Furthermore, it is the same place these functions are called in the myphone2 application. I have tried using the ffmpeg h.263 codec to the same effect. I have also tried using the latest version from CVS, which didn't help. Can someone give me a hint as to why this is not working? -Zack

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Re: [h323plus] Support Inquiry
by Paul E. Jones 17 Apr '09

17 Apr '09

Forwarding to the h323plus list… From: Yen-Hsiang, Chen [mailto:handbroken@gmail.com] Sent: Friday, April 17, 2009 10:48 AM To: support(a)packetizer.com Cc: 衍詳 Subject: Support Inquiry Dear Sir, Some problems I would like please you for help on h323. On H.239, we modify the code from simple project, when we open the usb camera (Via OpenVideoChannel in main.cxx of simple), the image can appear normal. But the H.239 open, they can not show usb camera and H.239 at the same time , that is, to receive the H.239 error OpenLogicalChannel. I copy the method from OpenVideoChannel to implement H.239. But no work. Could you please help me to solve this. PTrace message 0:06.226 SimpleH323 H323 Found capability: H239<H.263{sw} <1>> 0:06.226 SimpleH323 H323 Application Available H239<H.263{sw} <1>> 0:06.226 SimpleH323 H245 Opening channel: T-117 0:06.228 SimpleH323 RTP_UDP Session 5 created: 192.168.3.40:5004-5005 ssrc=4041584155 0:06.228 SimpleH323 RTP Adding session RTP_UDP 0:06.228 SimpleH323 H323RTP Transmitter created using session 5 0:06.228 SimpleH323 H323RTP OnSendingPDU 0:06.228 SimpleH323 RTP OnSendingPDU 0:06.228 SimpleH323 H323PLUGIN Creating video codec H.263 from plugin 0:06.229 SimpleH323 PVidDev SetFrameSize to 1408x1152 0:06.229 SimpleH323 PVidDev SetColourFormatConverter success for native YUV420P 0:06.230 SimpleH323 H323 Started sending logical channel: H.263{sw} <1> 0:06.230 SimpleH323 LogChan Opened using capability H.263{sw} <1> 0:06.230 SimpleH323 LogChan Bandwidth requested/used = 327.6/0.0 kb/s 0:06.230 SimpleH323 H323 Bandwidth request: -0.0kb/s, available: 8628.6kb/s 0:06.230 SimpleH323 H323 Bandwidth request: +327.6kb/s, available: 8628.6kb/s 0:06.230 SimpleH323 H245 Sending PDU [(noaddr)/(noaddr)] : request openLogicalChannel 0:06.230 SimpleH323 H225 Sending PDU [ip$192.168.3.40:1720/ip$192.168.3.100:37798] : empty 0:06.231 SimpleH323 H323 Application OpenLogicalChannel failed: H239<H.263{sw} <1>> 0:06.236 H225 Answer:b6c77b90 H225 Receiving PDU [ip$192.168.3.40:1720/ip$192.168.3.100:37798] : empty 0:06.236 H225 Answer:b6c77b90 H225 Handling PDU: Facility callRef=15942 0:06.236 H225 Answer:b6c77b90 H245 Receiving PDU [(noaddr)/(noaddr)] : response openLogicalChannelReject 0:06.236 H225 Answer:b6c77b90 H245 Received open channel reject: T-117, state=AwaitingEstablishment 0:06.236 H225 Answer:b6c77b90 H323RTP Cleaning up RTP T-117 0:06.237 H225 Answer:b6c77b90 LogChan Cleaning up T-117 0:06.237 H225 Answer:b6c77b90 H323 Stopped sending logical channel: H.263{sw} <1> 0:06.237 H225 Answer:b6c77b90 LogChan Cleaned up T-117 0:06.237 H225 Answer:b6c77b90 RTP Releasing session 5 0:06.237 H225 Answer:b6c77b90 RTP Deleting session 5 0:06.237 H225 Answer:b6c77b90 RTP_UDP Session 5, Shutting down read. 0:06.237 H225 Answer:b6c77b90 RTP_UDP Session 5, Shutting down write. I found that I can send H.239 packets, but receive not work. Does it will open two windows of both usb camera and h.239 data sharing window ? I try to use usb camera and fake video. But both of them show on the same window and preempt the same window resource resulting segmentation fault. Could you give any advice for me ? Thanks & Regards, Hans

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