The Caption Creation Utility (CAPTION) is part of the sample captioning system provided with the Toolkit. See Captioning for additional information on this sample captioning system.
The Caption Creation Utility program enables the synchronization of an audio file with a text file.
Note: This concept can be extended beyond audio and text to apply to many possibilities, such as synchronizing audio and video, or synchronizing video and text.
While the audio file is playing, the Caption Creation Utility program issues the MCI_STATUS command to obtain a media-position value of the audio file. The media-position value is combined with the text file to produce a caption file. An application can use the resulting caption file in conjunction with the Caption DLL to provide captioning in an application.