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Configuring Video and Audio
Devices for Use with Polycom PVX
You can select from a number of different audio and video input devices to use
with your Polycom® PVX™ application, version 8.0.1 or later.
This document lists the advantages and disadvantages of various devices so you
can choose the correct one for your environment. It also describes the factors you
should consider when selecting a video input device.
Once you have selected your audio and video devices, you need to configure
the
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Selecting Audio and Video Devices for Use with Polycom PVX Determining the CPU Load for Your System Polycom PVX is a CPU-intensive application. It was originally designed to accommodate the CPU requirements of third-party video capture devices, so that the total CPU load results in acceptable performance. As modern devices have become more capable in resolution and supported features, they have sometimes also become more CPU intensive. Using some of these devices can cause the total CPU loa
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Selecting Audio and Video Devices for Use with Polycom PVX Uses this CPU load This device... level... Logitech QuickCam Orbit MP Driver version 9.0.2 Medium Veo Velocity Connect Medium V-Stream TV2800 (V-Stream Xpert DVD Maker USB 2.0) Low If your device is not listed, you can calculate the CPU load level yourself. To determine your video input device’s CPU load: 1. With no other applications running, start Polycom PVX. Make sure that there is no call in progress and that you can see video. 2.
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Selecting Audio and Video Devices for Use with Polycom PVX Specifying Advanced Video Properties To optimize the video from your PVX, you need to correctly specify the PVX video settings. Before you start, you need to know the CPU load level of your video input device. Refer to Determining the CPU Load for Your System for more information. To specify the advanced video properties: 1. From the PVX Main page, select Setup > Video > Advanced. 2. Configure these settings: Setting Description Enabl
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Selecting Audio and Video Devices for Use with Polycom PVX Choosing and Configuring Audio Input Devices Note that some special versions of Polycom PVX provide only the video portion of calls, while other devices handle audio. This section does not apply to these special video-only versions of Polycom PVX. Choosing an Audio Input Device Polycom PVX offers you the flexibility of choosing from a number of different audio input devices. You can use the webcam’s built-in microphone (if your webca
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Selecting Audio and Video Devices for Use with Polycom PVX Audio Input Device Advantages Disadvantages External analog • Provides excellent synchronization • Occupies additional desk space microphone when plugged into the same device as • Limited audio quality the speakers The Windows XP echo canceller limits Connecting both the audio and video audio to 7 kHz. This is comparable to to the computer provides the best echo traditional telephone quality. cancellation from the Windows XP echo c
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Selecting Audio and Video Devices for Use with Polycom PVX Configuring Audio Input Devices After you connect your hardware, you need to specify the audio input and output devices in the Polycom PVX application. To specify the audio devices: 1. From the PVX Main page, select Setup > Audio. 2. Configure these settings: Setting Description Audio Output Device Select Auto to use the sound playback device specified in the Windows Sounds and Audio Devices control panel. Select None to use no audio
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Selecting Audio and Video Devices for Use with Polycom PVX Using PVX with the Computer Calling Kit for SoundStation2 or SoundStation2W The Computer Calling Kit allows you to make calls with PVX using a Polycom SoundStation2 or SoundStation2W phone. The minimum software requirements to use this kit are: • SoundStation2 conference phone version SS2.CON.01.115 or later • SoundStation2W conference phone version S2W.CON.01.2xx or later To use PVX with the Computer Calling Kit: 1. Install the Comp
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Selecting Audio and Video Devices for Use with Polycom PVX Troubleshooting Video Symptom Cause Solution The CPU usage is at or above 95% This is normal operation. when PVX is sending video to the The desktop capture and encoder are busy running to provide the best far site. desktop video quality. Slow or freezing video. The total CPU Load is too high. Adjust PVX to accommodate the video input device’s high CPU usage. To do this: 1. Go to Setup > Video > Advanced. 2. Configure the setting cor
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Selecting Audio and Video Devices for Use with Polycom PVX Audio Symptom Problem Solution Unable to access audio adjustment These adjustments are not available Make audio adjustments when the settings, such as the Microphone when the system is in a call. system is not in a call and not Volume slidebar on the Setup > muted. Audio page. The audio from a system using the The microphone’s audio gain is set Enable the Automatic Gain Control computer’s built-in microphone and too high. setting on t
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Selecting Audio and Video Devices for Use with Polycom PVX Symptom Problem Solution The audio volume level increases or This is normal operation. The audio returns to its normal level decreases slightly when you start automatically. the Polycom PVX application. When using a SoundStation2 or The speaker volume is not adjusted Adjust your Windows volume control SoundStation2W with the Computer correctly. settings: Calling Kit, the volume from the 1. Click Start and go to Settings > SoundStatio
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Selecting Audio and Video Devices for Use with Polycom PVX Disclaimer This software is provided ‘as is’ with no explicit or implied warranties in respect of its properties, including, but not limited to, correctness and fitness for purpose. Trademark Information Polycom® and the Polycom logo design are registered trademarks of Polycom, Inc. PVX™ is a trademark of Polycom, Inc. All other brand and product names are trademarks or registered trademarks of their respective companies. 12
