Philips pcvc720k ユーザーズマニュアル
7.2 FAQs
Q: I can't control the volume of the camera audio device. There is no volume control
visible in the Volume Control recording properties.
A: Double-click the camera icon on the Windows taskbar. If there is no camera icon on the
taskbar, start VLounge and select 'Configuration - Icons', and enable 'Driver icon on taskbar', then
click the camera icon on the taskbar. Go to the Audio tab and make sure the microphone volume
has been turned up and that the camera microphone is the preferred recording device. See also
Camera Settings - Audio.
Q: Why can't I choose higher frame rates for the USB Camera?
A: As the digital camera is a USB device, it shares the bandwidth of the USB port with all the
other USB peripherals. If these USB devices are active (speakers providing sound or scanners
performing a scan), the remaining bandwidth may be restricted to frame rates lower than those
listed in the 'Technical specifications' as the maximum frame rate for that resolution.
Q: My PC will not start when the camera is connected.
A: It is highly likely that your BIOS is not compatible with the USB standard. Contact your PC
supplier for an updated BIOS.
A: It is highly likely that your BIOS is not compatible with the USB standard. Contact your PC
supplier for an updated BIOS.
Q: With additional USB peripherals installed my PC seems to be unstable (blue screens).
A: Check if Phoenix Plugworks is one of your applications. You need to have version 1.1 or
higher for correct operation with Windows.
Q: No USB Device: My Windows Device Manager reports 'No USB device' even though I
have a physical USB port. In the Windows Device Manager (right click on My Computer,
click on Properties, Device Manager), no section with the name 'Universal serial bus
controller' is visible.
A: Check whether your BIOS enables the USB port as follows: reboot your computer, enter your
BIOS setup and look for a text such as 'USB function'. This should be enabled.
Q: No Video: My application doesn't display any video.
A: There are several reasons for not having video:
1.
Check whether the USB PC camera is connected to a USB port
2.
Check whether 'Microsoft WDM Image Capture' is the current capture source. On
systems with other devices, this other device may be the selected capture source.
systems with other devices, this other device may be the selected capture source.
3.
If more than one USB capture device is connected to the PC, check whether the correct
USB capture device has been selected.
USB capture device has been selected.
Q: No 'Microsoft WDM Image Capture': 'Microsoft WDM Image Capture' is not available as
image capture source.
A: All USB Image devices need 'Microsoft WDM Image Capture' as the capture source. Check
whether this capture source is enabled. (Start, Settings, Control Panel, MultiMedia, Device tab,
Video Capture Devices entry. Double-click the 'Microsoft WDM Image Capture' entry. A property
page will pop up. The option 'Use the video capture device' should be selected).
image capture source.
A: All USB Image devices need 'Microsoft WDM Image Capture' as the capture source. Check
whether this capture source is enabled. (Start, Settings, Control Panel, MultiMedia, Device tab,
Video Capture Devices entry. Double-click the 'Microsoft WDM Image Capture' entry. A property
page will pop up. The option 'Use the video capture device' should be selected).
Q: Why does my application crash when I unplug the camera from the USB port?
A: If you unplug the camera while it is providing an audio or video stream to an application on
your computer, the computer may crash. To avoid problems always close applications that use
audio from the camera microphone or video from the camera before unplugging your Philips USB
PC Camera.
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