IPTC

The International Press Telecommunications Council released a metadata standard in 1990 that was to allow contextual information to be embedded within press photographs. The standard became known as the IPTC standard. IPTC focuses on information about the subject of the image rather than its physical attributes, thus it contains information such as keywords, copyright statements, location details and subject of the image. In general, the IPTC information is as relevant to any image derivative as to the master image.

IPTC metadata is stored in a similar format to that used for EXIF. IPTC has the concept of a broad category of attributes, known as a Record. Within a record a series of tags is used to specify individual attributes. IPTC defines nine Record values, however only 6 are used by images:

  1. Envelope (Envelope)
  2. Application (Application)
  3. News Photo (NewsPhoto)
  4. Pre Object Data (PreObjectData)
  5. Object Data (ObjectData)
  6. Post Object Data (PostObjectData)

As with EXIF the combination of a Record and Tag defines an individual attribute. The Record:Tag notation is used. Unlike EXIF however, IPTC does allow for repeat attributes, so attribute 2:25 (which is the keywords tag) may appear multiple times if more than one keyword is defined.

The tables below describe what tags are available on a Record basis. For a complete description of the values available for a given attribute, please consult the IPTC IMM Specification.

Tag ID

Tag Name

Values / Notes

0

EnvelopeRecordVersion

 

5

Destination

 

20

FileFormat

0 = No ObjectData

1 = IPTC-NAA Digital Newsphoto Parameter Record

2 = IPTC7901 Recommended Message Format

3 = Tagged Image File Format (Adobe/Aldus Image data)

4 = Illustrator (Adobe Graphics data)

5 = AppleSingle (Apple Computer Inc)

6 = NAA 89-3 (ANPA 1312)

7 = MacBinary II

8 = IPTC Unstructured Character Oriented File Format (UCOFF)

9 = United Press International ANPA 1312 variant

10 = United Press International Down-Load Message

11 = JPEG File Interchange (JFIF)

12 = Photo-CD Image-Pac (Eastman Kodak)

13 = Bit Mapped Graphics File [.BMP] (Microsoft)

14 = Digital Audio File [.WAV] (Microsoft & Creative Labs)

15 = Audio plus Moving Video [.AVI] (Microsoft)

16 = PC DOS/Windows Executable Files [.COM][.EXE]

17 = Compressed Binary File [.ZIP] (PKWare Inc)

18 = Audio Interchange File Format AIFF (Apple Computer Inc)

19 = RIFF Wave (Microsoft Corporation)

20 = Freehand (Macromedia/Aldus)

21 = Hypertext Markup Language [.HTML] (The Internet Society)

22 = MPEG 2 Audio Layer 2 (Musicom), ISO/IEC

23 = MPEG 2 Audio Layer 3, ISO/IEC

24 = Portable Document File [.PDF] Adobe

25 = News Industry Text Format (NITF)

26 = Tape Archive [.TAR]

27 = Tidningarnas Telegrambyra NITF version (TTNITF DTD)

28 = Ritzaus Bureau NITF version (RBNITF DTD)

29 = Corel Draw [.CDR]

22

FileVersion

 

30

ServiceIdentifier

 

40

EnvelopeNumber

 

50

ProductID

 

60

EnvelopePriority

 

70

DateSent

 

80

TimeSent

 

90

CodedCharacterSet

(values are entered in the form "ESC X Y[, ...]". The escape sequence for UTF-8 character coding is "ESC % G", but this is displayed as "UTF8" for convenience. Either string may be used when writing. The value of this tag affects the decoding of string values in the Application and NewsPhoto records)

100

UniqueObjectName

 

120

ARMIdentifier

 

122

ARMVersion

 

Tag ID

Tag Name

Values / Notes

0

ApplicationRecordVersion

 

3

ObjectTypeReference

 

4

ObjectAttributeReference

 

5

ObjectName

 

7

EditStatus

 

8

EditorialUpdate

 

10

Urgency

 

12

SubjectReference

 

15

Category

 

20

SupplementalCategories

 

22

FixtureIdentifier

 

25

Keywords

 

26

ContentLocationCode

 

27

ContentLocationName

 

30

ReleaseDate

 

35

ReleaseTime

 

37

ExpirationDate

 

38

ExpirationTime

 

40

SpecialInstructions

 

42

ActionAdvised

01 = Object Kill

02 = Object Replace

03 = Ojbect Append

04 = Object Reference

45

ReferenceService

 

47

ReferenceDate

 

50

ReferenceNumber

 

55

DateCreated

 

60

TimeCreated

 

62

DigitalCreationDate

 

63

DigitalCreationTime

 

65

OriginatingProgram

 

70

ProgramVersion

 

75

ObjectCycle

'a' = Morning

'b' = Both Morning and Evening

'p' = Evening

80

By-line

 

85

By-lineTitle

 

90

City

 

92

Sub-location

 

95

Province-State

 

100

Country-PrimaryLocationCode

 

101

Country-PrimaryLocationName

 

103

OriginalTransmissionReference

 

105

Headline

 

110

Credit

 

115

Source

 

116

CopyrightNotice

 

118

Contact

 

120

Caption-Abstract

 

121

LocalCaption

 

122

Writer-Editor

 

125

RasterizedCaption

 

130

ImageType

 

131

ImageOrientation

'L' = Landscape

'P' = Portrait

'S' = Square

135

LanguageIdentifier

 

150

AudioType

'0T' = Text Only

'1A' = Mono Actuality

'1C' = Mono Question and Answer Session

'1M' = Mono Music

'1Q' = Mono Response to a Question

'1R' = Mono Raw Sound

'1S' = Mono Scener

'1V' = Mono Voicer

'1W' = Mono Wrap

'2A' = Stereo Actuality

'2C' = Stereo Question and Answer Session

'2M' = Stereo Music

'2Q' = Stereo Response to a Question

'2R' = Stereo Raw Sound

'2S' = Stereo Scener

'2V' = Stereo Voicer

'2W' = Stereo Wrap

151

AudioSamplingRate

 

152

AudioSamplingResolution

 

153

AudioDuration

 

154

AudioOutcue

 

184

JobID

 

185

MasterDocumentID

 

186

ShortDocumentID

 

187

UniqueDocumentID

 

188

OwnerID

 

200

ObjectPreviewFileFormat

0 = No ObjectData

1 = IPTC-NAA Digital Newsphoto Parameter Record

2 = IPTC7901 Recommended Message Format

3 = Tagged Image File Format (Adobe/Aldus Image data)

4 = Illustrator (Adobe Graphics data)

5 = AppleSingle (Apple Computer Inc)

6 = NAA 89-3 (ANPA 1312)

7 = MacBinary II

8 = IPTC Unstructured Character Oriented File Format (UCOFF)

9 = United Press International ANPA 1312 variant

10 = United Press International Down-Load Message

11 = JPEG File Interchange (JFIF)

12 = Photo-CD Image-Pac (Eastman Kodak)

13 = Bit Mapped Graphics File [.BMP] (Microsoft)

14 = Digital Audio File [.WAV] (Microsoft & Creative Labs)

15 = Audio plus Moving Video [.AVI] (Microsoft)

16 = PC DOS/Windows Executable Files [.COM][.EXE]

17 = Compressed Binary File [.ZIP] (PKWare Inc)

18 = Audio Interchange File Format AIFF (Apple Computer Inc)

19 = RIFF Wave (Microsoft Corporation)

20 = Freehand (Macromedia/Aldus)

21 = Hypertext Markup Language [.HTML] (The Internet Society)

22 = MPEG 2 Audio Layer 2 (Musicom), ISO/IEC

23 = MPEG 2 Audio Layer 3, ISO/IEC

24 = Portable Document File [.PDF] Adobe

25 = News Industry Text Format (NITF)

26 = Tape Archive [.TAR]

27 = Tidningarnas Telegrambyra NITF version (TTNITF DTD)

28 = Ritzaus Bureau NITF version (RBNITF DTD)

29 = Corel Draw [.CDR]

201

ObjectPreviewFileVersion

 

202

ObjectPreviewData

 

225

ClassifyState

 

228

SimilarityIndex

 

230

DocumentNotes

 

231

DocumentHistory

 

232

ExifCameraInfo

 

Tag ID

Tag Name

Values / Notes

0

NewsPhotoVersion

 

10

IPTCPictureNumber

(4 numbers: 1-Manufacturer ID, 2-Equipment ID, 3-Date, 4-Sequence)

20

IPTCImageWidth

 

30

IPTCImageHeight

 

40

IPTCPixelWidth

 

50

IPTCPixelHeight

 

55

SupplementalType

0 = Main Image

1 = Reduced Resolution Image

2 = Logo

3 = Rasterized Caption

60

ColorRepresentation

0x0 = No Image, Single Frame

0x100 = Monochrome, Single Frame

0x300 = 3 Components, Single Frame

0x301 = 3 Components, Frame Sequential in Multiple Objects

0x302 = 3 Components, Frame Sequential in One Object

0x303 = 3 Components, Line Sequential

0x304 = 3 Components, Pixel Sequential

0x305 = 3 Components, Special Interleaving

0x400 = 4 Components, Single Frame

0x401 = 4 Components, Frame Sequential in Multiple Objects

0x402 = 4 Components, Frame Sequential in One Object

0x403 = 4 Components, Line Sequential

0x404 = 4 Components, Pixel Sequential

0x405 = 4 Components, Special Interleaving

64

InterchangeColorSpace

1 = X,Y,Z CIE

2 = RGB SMPTE

3 = Y,U,V (K) (D65)

4 = RGB Device Dependent

5 = CMY (K) Device Dependent

6 = Lab (K) CIE

7 = YCbCr

8 = sRGB

65

ColorSequence

 

66

ICC_Profile

 

70

ColorCalibrationMatrix

 

80

LookupTable

 

84

NumIndexEntries

 

85

ColorPalette

 

86

IPTCBitsPerSample

 

90

SampleStructure

0 = OrthogonalConstangSampling

1 = Orthogonal4-2-2Sampling

2 = CompressionDependent

100

ScanningDirection

0 = L-R, Top-Bottom

1 = R-L, Top-Bottom

2 = L-R, Bottom-Top

3 = R-L, Bottom-Top

4 = Top-Bottom, L-R

5 = Bottom-Top, L-R

6 = Top-Bottom, R-L

7 = Bottom-Top, R-L

102

IPTCImageRotation

0 = 0

1 = 90

2 = 180

3 = 270

110

DataCompressionMethod

 

120

QuantizationMethod

0 = Linear Reflectance/Transmittance

1 = Linear Density

2 = IPTC Ref B

3 = Linear Dot Percent

4 = AP Domestic Analogue

5 = Compression Method Specific

6 = Colour Space Specific

7 = Gamma Compensated

125

EndPoints

 

130

ExcursionTolerance

0 = Not Allowed

1 = Allowed

135

BitsPerComponent

 

140

MaximumDensityRange

 

145

GammaCompensatedValue

 

Tag ID

Tag Name

Values / Notes

10

SizeMode

0 = Size Not Known

1 = Size Known

20

MaxSubfileSize

 

90

ObjectSizeAnnounced

 

95

MaximumObjectSize

 

Tag ID

Tag Name

Values / Notes

10

SubFile

 

Tag ID

Tag Name

Values / Notes

10

ConfirmedObjectSize