Inside Macintosh: QuickTime Components /

Chapter 8 - Video Digitizer Components / Video Digitizer Components Reference

Video Digitizer Component Functions / Controlling Compressed Source Devices

VDResetCompressSequence

The VDResetCompressSequence function allows an application to force the video digitizer to insert a key frame into a temporally compressed image sequence.

pascal VideoDigitizerError VDResetCompressSequence 
                           (VideoDigitizerComponent ci);

ci

Identifies the application's connection to the video digitizer component. An application obtains this value from the Component Manager's OpenComponent function.

DESCRIPTION

After an application calls this function, the digitizer ensures that the next frame returned to the application is a key frame.

RESULT CODES

noErr	0	No error
digiUnimpErr	-2201	Function not supported

SEE ALSO

An application can control the rate at which the digitizer inserts key frames by calling the VDSetCompression function, which is discussed beginning on page 8-44.