MCI driver

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(n.) Media Control Interface driver; a software component that directs the recording and playback of multimedia objects. The syntax requires an MCI command to “open” a device, give it instructions, and “close” it. For basic functions all MCI devices share a set of commands, such as “play” and “stop.” Microsoft originally defined 11 MCI devices that drivers control, including an undefined classification. See table below.

MCI Drivers

MCI Device Command Syntax
Animation player MCI_DEVTYPE_ANIMATION
Audio CD player MCI_DEVTYPE_CD_AUDIO
Digital audio tape MCI_DEVTYPE_DAT
Video in a window MCI_DEVTYPE_DIGITAL_VIDEO
Undefined MCI_DEVTYPE_OTHER
Video overlay MCI_DEVTYPE_OVERLAY
Image scanner MCI_DEVTYPE_SCANNER
MIDI sequencer MCI_DEVTYPE_SEQUENCER
Videocassette recorder MCI_DEVTYPE_VCR
Videodisc player MCI_DEVTYPE_VIDEODISC
Waveform player MCI_DEVTYPE_WAVEFORM_AUDIO