Defines the default values. Atom Size Atom Type Atom Size Atom Type Atom Type Atom Type A 16-bit integer that indicates the pixel depth of the compressed image. Values of 1, 2, 4, 8 ,16, 24, and 32 indicate the depth of color images. The value 32 should be used only if the image contains an alpha channel. Values of 34, 36, and 40 indicate 2-, 4-, and 8-bit grayscale, respectively, for grayscale images. A 16-bit integer that identifies which color table to use. If this field is set to –1, the default color table should be used for the specified depth. For all depths below 16 bits per pixel, this indicates a standard Macintosh color table for the specified depth. Depths of 16, 24, and 32 have no color table. If the color table ID is set to 0, a color table is contained within the sample description itself. The color table immediately follows the color table ID field in the sample description. Atom Type Atom Type Atom Type Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type A 32-bit integer that specifies the duration of this edit segment in units of the movie’ s time scale. A 32-bit integer containing the starting time within the media of this edit segment (in media timescale units). If this field is set to –1, it is an empty edit. The last edit in a track should never be an empty edit. Any difference between the movie’ s duration and the track’ s duration is expressed as an implicit empty edit. A 32-bit fixed-point number that specifies the relative rate at which to play the media corresponding to this edit segment. This rate value cannot be 0 or negative. Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Color Parameter Atom Atom Size Atom Type Image Description Extension "Field Info" Atom Size Atom Type Image Description Extension "Clean Aperture" Atom Size Atom Type Image Description Extension "Pixel Aspect Ratio" Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type A 1 6-bit fixed-point value that indicates how loudly this track’ s sound is to be played. A value of 1.0 indicates normal volume. A 32-bit fixed-point number that specifies the width of this track in pixels. A 32-bit fixed-point number that indicates the height of this track in pixels. Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type An MPEG-4 elementary stream descriptor atom. This extension is required for MPEG-4 video. Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type initial object descriptor atom Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type Atom Size Atom Type