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【正文】 lly has either a posite video input or a posite and an SVideo input. The camera must be attached to this input. In some cases, the electrical connection will be imperfect even though the cables appear plugged in. In these cases, the installer must manipulate the cables until a working connection is established. Some ISA video capture cards require selection of the IRQ interrupts through jumpers on the ISA board, although this is being less mon. Other ISA cards may be configured through software. Plug and Play pliant ISA and PCI cards may sometimes experience resource conflicts due to bugs in the Plug and Play implementations. Video capture is handled through Video for Windows drivers. The most recent version of the 16 bit Video for Windows for Windows and Windows for Workgroups is Video for Windows . A version of Video for Windows with 32 bit video pressors and unknown other differences from Video for Windows ships with Windows 95. This Video for Windows (95) provides the video capture functions in Windows 95. ActiveMovie , which ships with Windows 95 OEM Service Release 2 (OSR2) and can be installed on earlier releases of Windows 95, does not provide any support for video capture. The video capture card installation software should install a Video for Windows video capture driver. This driver is identified by the line: MSVIDEO= in the [drivers] section of the Microsoft Windows file. Things To Do for Video Capture Problems ? Reboot. ? Check for IRQ or other resource conflict. ? Check the cables connecting the camera to the video capture card. Jiggle and adjust the cables in case there is a faulty electrical connection. ? Check that the video capture card is properly seated in its’ slot on the motherboard. ? Check the videoconferencing system documentation for notes on problems with the video capture card. ? Make sure that you have the correct or latest version of the video display adapter device driver. ? Reinstall the video card using the Windows Control Panel. ? Reinstall the video card using the video card’s installation program. ? On Windows , manually install the drivers by editing (make backup of original ) ? Install a new or different video card. Videoconference Application Videoconferencing Clients Videoconferencing systems invariably e with installation or setup programs. These are often InstallShield or another mercial installation program. The setup program will install all software ponents including applications. The setup program frequently installs video capture and sound boards that e with the videoconferencing system. Unfortunately, setup programs sometimes fail. When in doubt, uninstall the videoconferencing system and rerun the setup program. In a surprising number of cases, this will help. Conclusion PC Videoconferencing
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