QuickTime 4 Reference

Image Formats with Multiple Images in a Single File

QuickTime 4 adds support for image formats which can have multiple images in a single file. You can use GraphicsImportGetImageCount to find out how many images are in a file, and GraphicsImportSetImageIndex to select a particular image. Of the image formats supported by QuickTime 4, TIFF files can support multiple images, Photoshop files can contain multiple layers and FlashPix files can contain multiple resolutions.

Note that individual images in a file may have different characteristics (width and height, depth, and so on).

The following functions are new to QuickTime 4:

GraphicsImportGetImageCount
GraphicsImportSetImageIndex
GraphicsImportGetImageIndex