object

Object associated with this media control interface command. The object can be one of the following:

• Device type
  
• Device name
  
• Filename
  
• Alias
CAN DISTORT
Returns FALSE for most frame-grabber types of hardware. However, some hardware, such as Video Blaster, is capable of performing independent scaling in the horizontal and vertical directions and return TRUE.
CAN EJECT
Returns FALSE. The digital video device cannot eject media.
CAN LOCKEJECT
Returns TRUE if the device can disable manual ejection of the media.
CAN PLAY
Returns TRUE if the device can play.
CAN PROCESS INTERNAL
Returns TRUE if the device can internally process digital data with an internal digital to analog converter (DAC).
CAN RECORD
Returns TRUE if the digital video device can record.
CAN RECORD INSERT
Returns TRUE if the digital video device can insert data in the file. It expands the file and does not overwrite the information that is present.
CAN REVERSE
Returns FALSE. The digital video device can not play in reverse.
CAN SETVOLUME
Returns TRUE if the device supports software control of volume level.
CAN STREAM
Returns TRUE if the device can continuously transfer digital data to and from another device. The source or destination of the data is determined by the device context connection.
CAN STRETCH
Returns FALSE for most frame-grabber types hardware. However, some hardware, such as Video Blaster, is capable of performing scaling and returns TRUE.
COMPOUND DEVICE
Returns TRUE if the device requires an element name.
DEVICE TYPE
Returns Digitalvideo.
FAST PLAY RATE
Returns twice the normal recorded playback rate. Returns 0 if the device cannot play fast.
HAS AUDIO
Returns TRUE if the device has audio playback.
HAS IMAGE
Returns FALSE. The digital video device does not support still image functions.
HAS TUNER
Returns TRUE if the device has TV tuner capabilities.
HAS VIDEO
Returns TRUE.
HORIZONTAL IMAGE EXTENT
Returns the horizontal (X) source extent for images.
HORIZONTAL VIDEO EXTENT
Returns the horizontal (X) source extent for the video source.
MAXIMUM PLAY RATE
Not supported.
MESSAGE command
Returns TRUE if the device supports the command specified by command. The command can be any string command such as OPEN, PLAY, and so on.
MINIMUM PLAY RATE
Not supported.
NORMAL PLAY RATE
Returns the normal recorded playback rate of the currently loaded motion video device element, in the current speed format, either as a percentage or in frames per second. Otherwise, returns 0.
OVERLAY GRAPHICS
Returns FALSE. Overlay cards such as Video Blaster enable graphics overlay of the hardware monitor window, however, overlay is not supported over digital video playback in the graphics buffer.
PREROLL TIME
Returns 0, indicating the preroll time is not bounded.
PREROLL TYPE
Returns the preroll characteristics of the device. Returns NOTIFIED.
SLOW PLAY RATE
Returns half the normal recorded playback rate. Returns 0 if the device cannot play slow.
USES FILES
Returns TRUE if the element of a compound device is a file path name.
VERTICAL IMAGE EXTENT
Returns the vertical (Y) source extent for images.
VERTICAL VIDEO EXTENT
Returns the vertical (Y) source extent for the video source.
WINDOWS
Not supported.
WAIT
The command is executed synchronously. The function waits until the requested action is complete before returning to the application. The WAIT keyword must be specified in order to receive return string information.
NOTIFY
The command is executed asynchronously, allowing control to be returns immediately to the application. When the requested action is complete an MM_MCINOTIFY message is sent to the application window procedure.

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