[h323plus] OpenMCU 4CIF Issues

Adrien Rudulier rudz04 at yahoo.ca
Fri Jul 4 16:40:56 EDT 2008


I tried using PacPhone v2.0.5 but I couldn't connect to openMCU. I also found that in the Video settings the bitrate and framerate configurations are reversed. Also, I am using an analog HD camera through a usb capture card that supports up to 4CIF but I could only transmit QCIF or VGA.

Do you think the error with PVX and OpenMCU is in the ffmpeg decoder, an un-expected header, or some other reason?


----- Original Message ----
From: Simon Horne <s.horne at packetizer.com>
To: Adrien Rudulier <rudz04 at yahoo.ca>; h323plus at lists.packetizer.com
Sent: Thursday, July 3, 2008 7:59:42 PM
Subject: RE: [h323plus] OpenMCU 4CIF Issues

are known outstanding issues with h323plus H.263 and Polycom PVX and 
anyone can assist in resolving these issues, a contribution would be greatly 
You can try using PacPhone it supports 4CIF and 
is built off h323plus.
-----Original Message-----
From: h323plus-bounces at lists.packetizer.com  [mailto:h323plus-bounces at lists.packetizer.com]On Behalf Of Adrien  Rudulier
Sent: Friday, 4 July 2008 6:36 AM
To: h323plus at lists.packetizer.com
Subject: [h323plus] OpenMCU 4CIF  Issues

I am currently using the newest versions (as of July 2, 2008) of  ptlib(2.3.0), h323plus(1.20.5) and openmcu(2.2.4) from cvs on Ubuntu 8.04. I  installed the plugins correctly and openmcu runs fine. However when using two  polycom pvx clients to connect to openmcu using H.263 at 4CIF for both  transmitting and receiving, the video is blocky and very distorted. There is  no packet loss, the bitrate is set to 1920 kbps and the frame rate is a  constant 30 fps for both transmitting and receiving. I was wondering if the  problem is with openmcu or the pvx clients. Has anyone successfully used 4CIF  resolution to be clear and smooth? Also, I had to massage the h.263 plugin  code to get 4CIF to work with openmcu. Any help would greatly be  appreciated.

Adrien Rudulier

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