Jpeg2000 Tags
The tags below are found in JPEG 2000 images and the C2PA CAI JUMBF metadata
in various file types (see below). Note that ExifTool currently writes only
EXIF, IPTC and XMP tags in Jpeg2000 images, and EXIF and XMP in JXL images.
ExifTool will read/write Brotli-compressed EXIF and XMP in JXL images, but
the API Compress option must be set to create new EXIF and XMP in compressed
format.
C2PA (Coalition for Content Provenance and Authenticity) CAI (Content
Authenticity Initiative) JUMBF (JPEG Universal Metadata Box Format) metdata
is currently extracted from JPEG, PNG, TIFF-based (eg. TIFF, DNG),
QuickTime-based (eg. MP4, MOV, HEIF, AVIF), RIFF-based (eg. WAV, AVI, WebP),
PDF, SVG and GIF files, and ID3v2 metadata. The suggested ExifTool
command-line arguments for reading C2PA metadata are -jumbf:all -G3 -b -j
-u -struct. This metadata may be deleted from writable JPEG, PNG, WebP,
TIFF-based, and QuickTime-based files by deleting the JUMBF group with
-jumbf:all=. The C2PA JUMBF metadata may be extracted as a block via the
JUMBF tag. See https://c2pa.org/specifications/ for the C2PA
specification.
| Tag ID | Tag Name |
Writable | Values / Notes |
|---|
| 'Exif' |
EXIF |
- |
--> EXIF Tags |
| 'asoc' |
Association |
- |
--> Jpeg2000 Tags |
| 'bfdb' |
BinaryDataType |
no |
(JUMBF, MIME type and optional file name) |
| 'bfil' |
BinaryFilter |
no |
|
| 'bidb' |
BinaryData |
no |
(JUMBF) |
| 'bpcc' |
BitsPerComponent |
no |
|
| 'brob' |
BrotliXMP
BrotliEXIF
BrotliJUMB |
-
-
- |
--> XMP Tags
--> EXIF Tags
--> Jpeg2000 Tags |
| 'c2sh' |
C2PASaltHash |
no |
|
| 'cbor' |
CBORData |
- |
--> CBOR Tags |
| 'cdef' |
ComponentDefinition |
no |
|
| 'cgrp' |
ColorGroup |
no |
|
| 'chck' |
DigitalSignature |
no |
|
| 'cmap' |
ComponentMapping |
no |
|
| 'colr' |
ColorSpecification |
- |
--> Jpeg2000 ColorSpec Tags |
| 'comp' |
Composition |
no |
|
| 'copt' |
CompositionOptions |
no |
|
| 'cref' |
Cross-Reference |
no |
|
| 'creg' |
CodestreamRegistration |
no |
|
| 'drep' |
DesiredReproductions |
no |
|
| 'dtbl' |
DataReference |
no |
|
| 'flst' |
FragmentList |
no |
|
| 'free' |
Free |
no |
|
| 'ftbl' |
FragmentTable |
no |
|
| 'ftyp' |
FileType |
- |
--> Jpeg2000 FileType Tags |
| 'gtso' |
GraphicsTechnologyStandardOutput |
no |
|
| 'hrgm' |
GainMapImage |
no |
|
| 'ihdr' |
ImageHeader |
- |
--> Jpeg2000 ImageHeader Tags |
| 'inst' |
InstructionSet |
no |
|
| 'jP ' |
JP2Signature |
no |
|
| 'jp2c' |
ContiguousCodestream
PreviewImage |
no
no |
|
| 'jp2h' |
JP2Header |
- |
--> Jpeg2000 Tags |
| 'jp2i' |
IntellectualProperty |
- |
--> XMP Tags |
| 'jpch' |
CodestreamHeader |
- |
--> Jpeg2000 Tags |
| 'jplh' |
CompositingLayerHeader |
- |
--> Jpeg2000 Tags |
| 'json' |
JSONData |
- |
--> JSON Tags
(by default, data in this tag is parsed using the ExifTool JSON module to to
allow individual tags to be accessed when reading, but it may also be
extracted as a block via the "JSONData" tag or by setting the API
BlockExtract option) |
| 'jumb' |
JUMBFBox |
- |
--> Jpeg2000 Tags |
| 'jumd' |
JUMBFDescr |
- |
--> Jpeg2000 JUMD Tags |
| 'jxlc' |
JXLCodestream |
no |
(Codestream in JPEG XL image. Currently processed only to determine
ImageSize) |
| 'jxlp' |
PartialJXLCodestream |
no |
(Partial codestreams in JPEG XL image. Currently processed only to determine
ImageSize) |
| 'lbl ' |
Label |
no |
|
| 'mdat' |
MediaData |
no |
|
| 'mp7b' |
MPEG7Binary |
no |
|
| 'nlst' |
NumberList |
no |
|
| 'opct' |
Opacity |
no |
|
| 'pclr' |
Palette |
no |
|
| 'prfl' |
Profile |
no |
|
| 'res ' |
Resolution |
- |
--> Jpeg2000 Tags |
| 'resc' |
CaptureResolution |
- |
--> Jpeg2000 CaptureResolution Tags |
| 'resd' |
DisplayResolution |
- |
--> Jpeg2000 DisplayResolution Tags |
| 'roid' |
ROIDescription |
no |
|
| 'rreq' |
ReaderRequirements |
no |
|
| 'uinf' |
UUIDInfo |
- |
--> Jpeg2000 Tags |
| 'ulst' |
UUIDList |
no |
|
| 'url ' |
URL |
no |
|
| 'uuid' |
UUID-EXIF
UUID-EXIF2
UUID-EXIF_bad
UUID-IPTC
UUID-IPTC2
UUID-XMP
UUID-GeoJP2
UUID-Photoshop
UUID-C2PAClaimSignature
UUID-Signature
UUID-Unknown |
-
-
-
-
-
-
-
-
-
no
no |
--> EXIF Tags
--> EXIF Tags
--> EXIF Tags
--> IPTC Tags
--> IPTC Tags
--> XMP Tags
--> EXIF Tags
--> Photoshop Tags
--> CBOR Tags |
| 'xml ' |
XML
XMP |
undef!+
- |
(by default, the XML data in this tag is parsed using the ExifTool XMP module
to to allow individual tags to be accessed when reading, but it may also be
extracted as a block via the "XML" tag, which is also how this tag is
written and copied. It may also be extracted as a block by setting the API
BlockExtract option. This is a List-type tag because multiple XML blocks
may exist)
--> XMP XML Tags
(used for XMP in JPEG XL files)
--> XMP Tags |
|
The table below contains tags in the color specification (colr) box. This
box may be rewritten by writing either ICC_Profile, ColorSpace or
ColorSpecData. When writing, any existing colr boxes are replaced with the
newly created colr box.
NOTE: Care must be taken when writing this color specification because
writing a specification that is incompatible with the image data may make
the image undisplayable.
| Index1 | Tag Name |
Writable | Values / Notes |
|---|
| 0 |
ColorSpecMethod |
int8s! |
(default for writing is 2 when writing ICC_Profile, 1 when writing
ColorSpace, or 4 when writing ColorSpecData)
1 = Enumerated
2 = Restricted ICC
3 = Any ICC
4 = Vendor Color |
| 1 |
ColorSpecPrecedence |
int8s! |
(default for writing is 0) |
| 2 |
ColorSpecApproximation |
int8s! |
(default for writing is 0)
0 = Not Specified
1 = Accurate
2 = Exceptional Quality
3 = Reasonable Quality
4 = Poor Quality |
| 3 |
ICC_Profile
ColorSpace
ColorSpecData |
-
int32u!
undef[$size-3]! |
--> ICC_Profile Tags
0 = Bi-level
1 = YCbCr(1)
3 = YCbCr(2)
4 = YCbCr(3)
9 = PhotoYCC
11 = CMY
12 = CMYK
13 = YCCK
14 = CIELab
15 = Bi-level(2) | |
16 = sRGB
17 = Grayscale
18 = sYCC
19 = CIEJab
20 = e-sRGB
21 = ROMM-RGB
22 = YPbPr(1125/60)
23 = YPbPr(1250/50)
24 = e-sYCC |
|
|
| Index4 | Tag Name |
Writable | Values / Notes |
|---|
| 0 |
MajorBrand |
no |
'jp2 ' = JPEG 2000 Image (.JP2)
'jph ' = High-throughput JPEG 2000 (.JPH)
'jpm ' = JPEG 2000 Compound Image (.JPM)
'jpx ' = JPEG 2000 with extensions (.JPX)
'jxl ' = JPEG XL Image (.JXL) |
| 1 |
MinorVersion |
no |
|
| 2 |
CompatibleBrands |
no+ |
|
|
| Index1 | Tag Name |
Writable | Values / Notes |
|---|
| 0 |
ImageHeight |
no |
|
| 4 |
ImageWidth |
no |
|
| 8 |
NumberOfComponents |
no |
|
| 10 |
BitsPerComponent |
no |
|
| 11 |
Compression |
no |
0 = Uncompressed
1 = Modified Huffman
2 = Modified READ
3 = Modified Modified READ
4 = JBIG
5 = JPEG
6 = JPEG-LS
7 = JPEG 2000
8 = JBIG2 |
|
|
Information extracted from the JUMBF description box.
| Tag ID | Tag Name |
Writable | Values / Notes |
|---|
| 'id' |
JUMDID |
no |
|
| 'label' |
JUMDLabel |
no |
|
| 'sig' |
JUMDSignature |
no |
|
| 'toggles' |
JUMDToggles? |
no |
Bit 0 = Requestable
Bit 1 = Label
Bit 2 = ID
Bit 3 = Signature |
| 'type' |
JUMDType |
no |
|
|
| Value | ResolutionUnit | Value | ResolutionUnit | Value | ResolutionUnit |
|---|
| -3 | = km |
1 | = 10 cm |
5 | = 0.01 mm |
| -2 | = 100 m |
2 | = cm |
6 | = um |
| -1 | = 10 m |
3 | = mm |
| |
| 0 | = m |
4 | = 0.1 mm |
| |
|
(This document generated automatically by Image::ExifTool::BuildTagLookup)
Last revised Oct 2, 2024
<-- ExifTool Tag Names