monitorThe monitor command specifies the presentation source. (The default presentation source is the workspace.) Switching the presentation source switches all audio and video streams in the source. Digital-video devices recognize this command. wsprintf(lpstrCommand, "monitor %s %s %s", lpszDeviceID, lpszMonitor,
lpszFlags); Parameters lpszDeviceID Identifier of an MCI device. This identifier or alias is assigned when the device is opened. lpszMonitor One or more of the following flags:
||Specifies that the workspace is the presentation source. This is the default
||Specifies that the external input is the presentation source. If a play command is in progress, it is first paused. If setvideo is "on", this flag displays a default hidden window. Devices might limit what
other device instances can do while monitoring input.
||When used with monitor "input", this flag selects the method of monitoring. The method is either "pre", "post", or "direct". Direct monitoring requests that the
device be configured for optimum display quality during monitoring. The direct
monitoring method might be incompatible with motion video recording.
Pre- and post-monitoring allow motion video recording. Pre-monitoring shows the external input prior to compression, while post-monitoring shows the external input after compression. Typically, different monitoring methods have different hardware implications. The default monitoring method is selected by the device.
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