Inside Macintosh: QuickTime Components /

Chapter 5 - Sequence Grabber Components / Sequence Grabber Components Reference

Sequence Grabber Component Functions / Working With Video Channels

SGVideoDigitizerChanged

The SGVideoDigitizerChanged function allows you to notify the sequence grabber component whenever you change the configuration of a video channel's video digitizer.

pascal ComponentResult SGVideoDigitizerChanged (SGChannel c);

c

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

DESCRIPTION

The sequence grabber and its video channels maintain information about the configuration of any video digitizer components that are currently in use.

IMPORTANT

It is very important to notify the sequence grabber of any configuration changes you make.

SPECIAL CONSIDERATIONS

You should not change the configuration of the video digitizer during a record operation.

SEE ALSO

You can obtain access to a video channel's video digitizer component by calling the SGGetVideoDigitizerComponent function, which is described in the previous section.

RESULT CODE

cantDoThatInCurrentMode

-9402

Request invalid in current mode