[Asterisk-video] Video Call through asterisk failed due to codec negotiation

[Khairul Nadzmi Mohd Yusof]

Hi,  

  Currently i'm trying to initiate a video call using sip from a Tandberg 3000 MXP
to a softphone (SIP communicator application). It managed to get through only
for voice but failed on the video part. I have set it to go through h263p
protocol. When it comes to the video format, the tandberg is transmitting CIF
but on the soft phone it is only transmitting VGA. Is there a way to enable both
of them to transmit the video.     
Khairul Nadzmi b Mohd Yusof

Analyst, Secure IT Services Department
Cyber Responsive Services
CyberSecurity Malaysia
An Agency Under the Ministry of Science, Technology & Innovation (MOSTI)

General Line : +603 8992 6888
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  _____  

From: Mário Dias [mailto:mario at hardserver.com]
To: asterisk-video at lists.digium.com
Sent: Thu, 24 Feb 2011 19:29:35 +0800
Subject: [Asterisk-video] error with app_transcoding

Hello! I just installed the app_transcoder with success and this runs
  well with asterisk boot...
  
  Now the problem is:
  
  My extensions.conf:
  
  [default]
  
  exten=5001,1,Answer()
  exten=5001,n,Transcode(,s at camera,h263 at qcif/fps=10/kb=52/qmin=4/qmax=12/gs=50)
  exten=5001,n,Hangup()
  
  [camera]
  
  exten=s,1,Answer()
  exten=s,n,Rtsp(rtsp://192.168.10.14:8554/CH001.sdp)
  exten=s,n,Hangup()
  
  
  And when I call 5001, the asterisk "craches" and in asterisk logs show
  the folow information:
  
  [Feb 23 18:15:22] WARNING[4142] app_transcoder.c: >Transcoding
  [,s at camera,h263 at qcif/fps=10/kb=52/qmin=4/qmax=12/gs=50,80008]
  [Feb 23 18:15:22] ERROR[4142] app_transcoder.c: Error opening encoder
  [Feb 23 18:15:22] WARNING[4142] app_transcoder.c: -joining thread
  
  I receive rtsp streaming with mp4v video codec, and I want transcode
  to H263 codec to softphone, the X-lite4.
  
  Any ideas???
  Help me please!!!!
  
  Best regards,
  
  Mário Dias
  
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