Well-known types

0

reserved

Reserved for use where no type needs to be indicated

1

UTF-8

Without any count or NULL terminator

2

UTF-16

Also known as UTF-16BE

3

S/JIS

Deprecated unless it is needed for special Japanese characters

4

UTF-8 sort

Variant storage of a string for sorting only

5

UTF-16 sort

Variant storage of a string for sorting only

13

JPEG

In a JFIF wrapper

14

PNG

In a PNG wrapper

21

BE Signed Integer

A big-endian signed integer in 1,2,3 or 4 bytes. Note: This data type is not supported in Timed_metadata_media. Use one of the fixed-size signed integer data types (that is, type codes 65, 66, or 67) instead.

22

BE Unsigned Integer

A big-endian unsigned integer in 1,2,3 or 4 bytes; size of value determines integer size. Note: This data type is not supported in Timed_metadata_media. Use one of the fixed-size unsigned integer data types (that is, type codes 75, 76, or 77) instead.

23

BE Float32

A big-endian 32-bit floating point value (IEEE754)

24

BE Float64

A big-endian 64-bit floating point value (IEEE754)

27

BMP

Windows bitmap format graphics

28

QuickTime Metadata atom

A block of data having the structure of the Metadata atom defined in this specification

65

8-bit Signed Integer

An 8-bit signed integer

66

BE 16-bit Signed Integer

A big-endian 16-bit signed integer

67

BE 32-bit Signed Integer

A big-endian 32-bit signed integer

70

BE PointF32

A block of data representing a two dimensional (2D) point with 32-bit big-endian floating point x and y coordinates. It has the structure: struct { BEFloat32 x; BEFloat32 y; }

71

BE DimensionsF32

A block of data representing 2D dimensions with 32-bit big-endian floating point width and height. It has the structure: struct { BEFloat32 width; BEFloat32 height; }

72

BE RectF32

A block of data representing a 2D rectangle with 32-bit big-endian floating point x and y coordinates and a 32-bit big-endian floating point width and height size. It has the structure: struct { BEFloat32 x; BEFloat32 y; BEFloat32 width; BEFloat32 height;} or the equivalent structure: struct { PointF32 origin; DimensionsF32 size; }

74

BE 64-bit Signed Integer

A big-endian 64-bit signed integer

75

8-bit Unsigned Integer

An 8-bit unsigned integer

76

BE 16-bit Unsigned Integer

A big-endian 16-bit unsigned integer

77

BE 32-bit Unsigned Integer

A big-endian 32-bit unsigned integer

78

BE 64-bit Unsigned Integer

A big-endian 64-bit unsigned integer

79

AffineTransformF64

A block of data representing a 3x3 transformation matrix. It has the structure: struct { BEFloat64 matrix[3][3]; }