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

Media Data Atom TypesPanorama Tracks in Cubic NodesTable 4-26FieldFields and their special values as represented in the pano sample data atom, providing backwardcompatibility to QuickTime VR 2.2ValueimageNumFramesXimageNumFramesYimageSizeXimageSizeYminPanmaxPanminTiltmaxTiltminFieldOfViewmaxFieldOfViewflags41Frame width * 4Frame height0.0360.0-45.045.05.090.01A 1 value in the flags field tells QuickTime VR 2.2 that the frames are not rotated. QuickTime VR 2.2 treats thisas a four-frame horizontal cylinder. The panoType field (formerly reserved1) must be set to kQTVRCube('cube') so that QuickTime VR 3.0 can recognize this panorama as a cube.Since certain viewing fields in the pano sample data atom are being used for backward compatibility, a newatom must be added to indicate the proper viewing parameters for the cubic image. This atom is the cubicview atom (atom type 'cuvw'). The data structure of the cubic view atom is as follows:struct QTVRCubicViewAtom {Float32Float32Float32Float32Float32Float32minPan;maxPan;minTilt;maxTilt;minFieldOfView;maxFieldOfView;Float32defaultPan;2012-08-14 | © 2004, 2012 Apple Inc. All Rights Reserved.298