Quicktime File Format (2012-08-14).pdf

Media Data Atom TypesNode Information Atom ContainerNoteThe use of resource forks for the storage of QuickTime media is deprecated in the QuickTime fileformat. The information that follows is intended to document existing content and should not beused for new development.In Mac OS with a two-fork file system, custom cursors could be stored in the resource fork of themovie file. However, this implementation does not work on any other operating system platform(such as Windows).The cursor parent atom is the parent of all of the custom cursor atoms stored in the VR world. Its atom type iskQTVRCursorParentAtomType ('vrcp'). The child atoms of the cursor parent are either cursor atoms orcolor cursor atoms. Their atom types are kQTVRCursorAtomType ('CURS') and kQTVRColorCursorAtomType('crsr'). These atoms are stored exactly as cursors or color cursors would be stored as a resource.Node Information Atom ContainerNote VR Media is deprecated in the QuickTime file format. The information that follows is intendedto document existing content containing VR Media and should not be used for new development.The node information atom container includes general information about the node such as the node’s type,ID, and name. The node information atom container also contains the list of hot spot atoms for the node. AQuickTime VR movie contains one node information atom container for each node in the file. The routineQTVRGetNodeInfo allows you to obtain the node information atom container for the current node or for anyother node in the movie.2012-08-14 | © 2004, 2012 Apple Inc. All Rights Reserved.275