Inside Macintosh: QuickTime Components /

Chapter 5 - Sequence Grabber Components / Sequence Grabber Components Reference

Sequence Grabber Component Functions / Working With Video Channels

SGSetVideoDigitizerComponent

The SGSetVideoDigitizerComponent function allows you to assign a video digitizer component to a video channel.

pascal ComponentResult SGSetVideoDigitizerComponent 
                           (SGChannel c, ComponentInstance vdig);

c

Specifies the reference that identifies the channel for this operation. You obtain this reference from the SGNewChannel function, described on page 5-29.

vdig

Contains a component instance that identifies a connection to a video digitizer component. The specified video channel component uses this video digitizer component to obtain its source video data. For more information about video digitizer components, see the chapter "Video Digitizer Components" in this book.

DESCRIPTION

Typically, the video channel component locates its own video digitizer component. Consequently, you may not need to use the SGSetVideoDigitizerComponent function.

SPECIAL CONSIDERATIONS

You cannot use the SGSetVideoDigitizerComponent function during a record operation. Many values are reinitialized as a result of changing digitizers.

RESULT CODE

cantDoThatInCurrentMode

-9402

Request invalid in current mode

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