Inside Macintosh: QuickTime Components

Component Type and Subtype Values

Apple has defined a component type value for sequence grabber channel components--that type value is 'sgch' . You can use the following constant to specify this type value:



 
#define SeqGrabChannelType 'sgch';

Sequence grabber channel components use their component subtype value to indicate the media type created by the component. For example, a channel component that works with video data would have a subtype of 'vide' (this value is defined by the Movie Toolbox's VideoMediaType constant).

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