Check which version of PTLIB you are using as you should be able to use the DirectShow driver (switch P_DirectShow in ptlibbuldopts) in ptlib. That driver requires DirectSound so check to see if have direct sound too I know I have issues with the ptlib config program finding direct sound on vista. If your webcam driver is not showing up then you have not correctly loaded it into the VideoInput factory loader system. Usually the problem can be fixed by adding a #include of the header file where you attempt to instance the driver in myphone. That should work.

From: h323plus-bounces@lists.packetizer.com [mailto:h323plus-bounces@lists.packetizer.com] On Behalf Of ooi khai chin
Sent: Friday, 15 January 2010 5:05 PM
To: h323plus@lists.packetizer.com
Subject: [h323plus] Myphone2 FPS problem

Hi All,
Currently, I found that when I start the myphone2 application (compiled from myphone2 source code), the settings->device(settings dialog box) can not change to my own driver name, it show Microsoft WDM Image Capture <Win32>.

I run the myphone2 exe provided, it show me my own device is "Logitech QuickCamPro 4000".

If I used my own compiled version, It only show me the 10fps during conference with the other. While if I used the myphone2 exe provided(able show device "Logitech qucikCamPro 4000"). It can achieve 25-30fps. It happen for any video codec (H.261, H.263, H.264).

Anyone, What is the problem?

Thanks.