Computer sending poor video quality during a call with Jabber Video
There are a number of possible reasons the computer could be sending poor quality video:
- The quality that Jabber Video can send for video is limited by the video quality captured by your camera. For best performance, use a high resolution camera that sends video at a rate of 30 or more frames per second. Also, make sure you use the latest driver for your camera.
- Bad network connectivity can affect video quality. The minimum requirement for video conferencing to work is 128kbps, but we suggest that you use a connection with an upload speed of at least 384kbps. Packet loss and jitter caused by the network will affect call quality as well. For more information about how to find your network's characteristics, see the Cisco TelePresence User Guide for your version of Jabber Video.
- Check your CPU usage during a call (In Windows, press Ctrl+Shift+Esc to display the Windows Task Manager. CPU usage is indicated at the bottom of the window). If the CPU usage is close to 100%, lower the resolution settings in the Jabber Video client and call again.
- Your computer might be on 'Power friendly mode' or 'Power save mode'. Try disabling this mode. Alternatively, download and install SpeedSwitchXP, to obtain a free program enter the following url: http://www.diefer.de/speedswitchxp. With this program configure your computer to run on maximum CPU performance. Note that Cisco TelePresence does not endorse or take responsibility for any third party software
- Windows Vista users can follow the Microsoft guide to Windows Vista performance and tuning by entering the following url: http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=2155.
For more background on how Jabber Video determines video resolution, system resources, and bandwidth, refer to the Cisco Jabber Video for TelePresence Administrator Guide for your version.
This article applies to the following products:
- Cisco Jabber Video for TelePresence
|January 13th, 2012||TAA_KB_380|