..驱动 is used to find out the driver for video capture that is associated with the Camera control.
信息（"The Camera control in this window is associated with the driver "+CAM_Camera1..驱动）
<Result> = <Control Name>..驱动
<Result>: Character string
- Empty string ("") if the camera control is associated with no driver for video capture. No Video function can be used.
- Driver for video capture associated with the specified Camera control. This result has the following format:
<Driver Name> + TAB + <Driver Version>
- <Driver Name> corresponds to the name of the video driver,
- <Driver Version> corresponds to the version of the driver.
<Control Name>: Character string (with or without quotes)
Name of the Camera control to use
Managing the drivers for video capture视频改变驱动
is used to modify the driver for video capture associated with the Camera control and 视频驱动列表
is used to get the list of drivers for video capture installed on the computer.