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Chapter 8 - Video Digitizer Components / Video Digitizer Components Reference

Video Digitizer Component Functions / Selecting an Input Source

VDSetInputStandard

The VDSetInputStandard function allows applications to specify the input
signaling standard to digitize. Video digitizer components support three input signaling standards: NTSC, PAL, and SECAM.

pascal VideoDigitizerError VDSetInputStandard
                                  (VideoDigitizerComponent ci,
                                     short inputStandard);

ci

Specifies the video digitizer component for the request. Applications obtain this reference from the Component Manager's OpenComponent function.

inputStandard

A short integer that specifies the signaling standard used in the source video signal. Valid values are

ntscIn

Input video signal to digitize is in NTSC format

palIn

Input video signal to digitize is in PAL format

secamIn

Input video signal to digitize is in SECAM format

DESCRIPTION

Applications can use the VDGetDigitizerInfo function (described on page 8-24) to determine the capabilities of a specified video digitizer component. Applications can use the VDGetCurrentFlags function (described on page 8-25) to determine the current input state of a digitizer component.

All video digitizer components must support this function.

SPECIAL CONSIDERATIONS

Your digitizer component should ensure that spatial characteristics that were set for one standard are not interpreted within another standard.

RESULT CODES

noErr	0	No error
qtParamErr	-2202	Invalid parameter value

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