Release Notes
Polycom PVX 6.0.2
pvx_rel602
The VideoMail feature cannot be used while in a call and the VideoMail control panel is
disabled.
Use of the VideoMail recording feature with third party cameras is currently supported
on Windows XP operating systems only.
If you expand the PVX window to preview a VideoMail recording and the video image
does not expand as well, the problem may be resolved by temporarily disabling hardware
acceleration. To disable hardware acceleration, go to Setup > Video and uncheck the box
labeled “Use DirectX Hardware Acceleration.”
Web Cam Hardware Issues
Polycom has qualified the cameras listed in the Supported Web Cams section for use with
Polycom PVX software. Many other cameras with Microsoft WDM video capture
support will also work, although some are not fully compatible or place their own
demands on the CPU that prevent them from being included on the list. We continue to
evaluate cameras and will add them as appropriate.
Very high CPU usage can be seen in a number of situations:
• On systems with less than a 2.0 GHz Pentium 4 or equivalent, the software is
very busy with media processing with only a modest amount left for other
applications. Changing the resource allocation under the General – Performance
dialog in setup to favor “Other Applications” can reduce the load for video
processing.
• On systems with some video capture devices, including some USB 2.0 cameras,
the camera driver can use a high percentage of the CPU to do video capture. If
you see the CPU load above 40% while in previewing local video while not in a
call this can be the cause. Changing the system resource allocation to favor
“Other Applications” under General – Performance in setup can help with this
somewhat. Please verify that you have the latest video capture drivers for your
device.
• While sending the desktop to the far end you should see the CPU at or above
95%. This is expected since the desktop capture and encoder are busy running to
provide the best desktop video quality. This code however, is running at a lower
priority than normal applications which ensures that those applications run first
but that desktop video uses all remaining CPU resources.
If you experience no video or audio in a call, please verify that the latest hardware drivers
are installed and check the video or audio with the vendor’s software to verify that the
operating system can handle the device properly. This can make a significant difference
in media performance.
In some cases the graphics interface in older systems is too slow to render video properly.
This is especially true when multiple video windows are open at the same time or if a
video window is stretched to a larger size. If this is an issue, a newer graphics card should
be considered.
You can connect multiple third-party cameras; however, not all types of cameras work
with other cameras. If you experience problems using a system with two third-party
cameras connected, try connecting only the camera you want to use.
Multiple cameras of the same model are not supported.
Some laptops will slow the clock speed when running on batteries and the Polycom PVX
software will show a processor alert. If this happens the PC should either be connected to
AC power or the system configuration settings under the Power Options control panel
should be changed to maximize performance (shorter battery time).
updated 1.18.2005
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