Vitec Multimedia HDM850+ Bedienungsanleitung PDF herunterladen (Seite 22)

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VMC-7440_v8_0_6_Quick Start_V1_0_0.doc

Date: 3/18/2013

page 22 / 51

The composite video resolution detection value could be:

DIN_NTSC_NOCOLOR (518): 720x487, 2 fields

DIN_NTSC (516): 720x487, 2 fields

DIN_PAL_NOCOLOR (517): 720x576, 2 fields

DIN_PAL (515): 720x576, 2 fields

If the signal format is undetermined, detection routine returns the value DIN_UNKNOWN (1).

If there is no signal detected the detection routine returns the value DIN_NONE (0).

Note2: The assembly container object asks the device component to get value of detected input

formats. When the parameter value changes, the device component sends a notification. The

application could retrieve this event, and get the detection value store into the last 24 bits of

hrHresult parameter from VIT_EVENT_LOG_ENTRY structure.

Note3: A hardware frame buffer upstream to the hardware encoder keeps the last good

captured frame when video source becomes not operational for any reason. Encoder keeps

encoding the last good captured frame even when there is no video source. An event signal warns

application or user that there is no detected signal in input.

The next GUI snapshot shows unavailable features as marked with a red cross:

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Vitec Multimedia HDM850+ Bedienungsanleitung Seite 22