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EXIFTOOL(1p)                   User Contributed Perl Documentation                   EXIFTOOL(1p)



NAME
       exiftool - Read and write meta information in files

SYNOPSIS
       exiftool [OPTIONS] [-TAG...] [--TAG...] FILE...

       exiftool [OPTIONS] -TAG[+-<]=[VALUE]... FILE...

       exiftool [OPTIONS] -TagsFromFile SRCFILE [-SRCTAG[>DSTTAG]...] FILE...

       exiftool [ -ver | -list[w|f|g[NUM]|d] ]

       For specific examples, see the EXAMPLES sections below.

DESCRIPTION
       A command-line interface to Image::ExifTool, used for reading and writing meta information
       in image, audio and video files.  FILE is a source file name, directory name, or "-" for
       the standard input.  Information is read from the source file and output in readable form
       to the console (or written to an output text file with the -w option).

       To write or copy information, new values are specified with the -TAG=[VALUE] syntax or the
       -TagsFromFile option.  This causes FILE to be rewritten, and by default the original file
       is preserved with "_original" appended to the file name.  (Be sure to verify that the new
       file is OK before erasing the original.)

       Below is a list of file types and meta information formats currently supported by ExifTool
       (r = read, w = write, c = create):

                       File Types                 |    Meta Information
         ---------------------------------------  |  --------------------
         3FR   r       ITC   r       PPM   r/w    |  EXIF           r/w/c
         ACR   r       JNG   r/w     PPT   r      |  GPS            r/w/c
         AI    r       JP2   r/w     PS    r/w    |  IPTC           r/w/c
         AIFF  r       JPEG  r/w     PSD   r/w    |  XMP            r/w/c
         APE   r       K25   r       QTIF  r      |  MakerNotes     r/w/c
         ARW   r       KDC   r       RA    r      |  Photoshop IRB  r/w/c
         ASF   r       M4A   r       RAF   r/w    |  ICC Profile    r/w/c
         AVI   r       MEF   r/w     RAM   r      |  MIE            r/w/c
         BMP   r       MIE   r/w/c   RAW   r/w    |  JFIF           r/w/c
         BTF   r       MIFF  r       RIFF  r      |  Ducky APP12    r/w/c
         CR2   r/w     MNG   r/w     RM    r      |  CIFF           r/w
         CRW   r/w     MOS   r/w     SR2   r      |  AFCP           r/w
         CS1   r/w     MOV   r       SRF   r      |  JPEG 2000      r
         DCM   r       MP3   r       SVG   r      |  DICOM          r
         DCR   r       MP4   r       SWF   r      |  Flash          r
         DIVX  r       MPC   r       THM   r/w    |  FlashPix       r
         DNG   r/w     MPG   r       TIFF  r/w    |  QuickTime      r
         DOC   r       MRW   r/w     VRD   r/w/c  |  GeoTIFF        r
         EPS   r/w     NEF   r/w     WAV   r      |  PrintIM        r
         ERF   r/w     OGG   r       WDP   r/w    |  ID3            r
         FLAC  r       ORF   r/w     WMA   r      |  Kodak Meta     r
         FLV   r       PBM   r/w     WMV   r      |  Ricoh RMETA    r
         FPX   r       PDF   r/w     X3F   r      |  Picture Info   r
         GIF   r/w     PEF   r/w     XLS   r      |  Adobe APP14    r
         HDP   r/w     PGM   r/w     XMP   r/w/c  |  APE            r
         HTML  r       PICT  r                    |  Vorbis         r
         ICC   r/w/c   PNG   r/w                  |  (and more)

       Note:  If FILE is a directory name, then only file types with recognized extensions are
       processed when reading, and only writable types are written.  However, the -ext option may
       be used to force processing of files with any extension.

OPTIONS
       Case is not significant for any command-line option (including tag and group names),
       except for single-character options if the corresponding upper case option is defined.
       Multiple options may NOT be combined into a single argument, because that would be
       interpreted as a tag name.

       -TAG Extract information for specified tag (ie. "-CreateDate").  See
            Image::ExifTool::TagNames for documentation on available tag names.  A tag name may
            include a leading group name separated by a colon (ie. "-XMP:Creator").  Any family 0
            or 1 group name may be used, and the group name may be prefixed by a digit to specify
            family number (ie.  "-1IPTC:Keywords").  Use the -listg or -listg1 option to list
            valid family 0 or 1 group names.

            A special tag name of "All" may be used to indicate all meta information.  This is
            particularly useful when a group name is specified to extract all information in a
            group.  ("*" is a synonym for "All", but must be quoted if used on the command line
            to prevent shell globbing.)

            If no tags are specified, all available information is extracted.

            Note:  Descriptions, not tag names, are shown by default when extracting information.
            Use the -s option to see the tag names instead.

       --TAG
            Exclude specified tag from extracted information.  Same as the -x option.  May also
            be used following a -TagsFromFile option to exclude tags from being copied, or to
            exclude groups from being deleted when deleting all information (ie. "-all=
            --exif:all" deletes all but EXIF information).

            Note that this will not exclude individual tags from a group delete.  Instead, the
            tags must be recovered using the -TagsFromFile option.

       -TAG[+-]=[VALUE]
            Write a new value for the specified tag (ie. "-comment=wow"), or delete the tag if no
            VALUE is given (ie. "-comment="). "+=" and "-=" are used to add or remove existing
            entries from a list, or to shift date/time values (see Image::ExifTool::Shift.pl for
            details), and "-=" may be used to conditionally remove or replace a tag (see "WRITING
            EXAMPLES" for examples).

            If a group name is not specified for TAG, then the information is written to the
            preferred group, which is the first group in the following list where TAG is valid:
            1) EXIF, 2) IPTC, 3) XMP, 4) MakerNotes.

            The special "All" tag may be used in this syntax only if a VALUE is NOT given.  This
            causes all meta information to be deleted (or all information in a group if
            "-GROUP:All=" is used).  Note that not all groups are deletable.  Also, within an
            image some groups may be contained within others, and these groups are removed if the
            super group is deleted.  Below are lists of these group dependencies:

              JPEG Image:
              - Deleting EXIF or IFD0 also deletes ExifIFD, GlobParamIFD,
                GPS, IFD1, InteropIFD, MakerNotes, PrintIM and SubIFD.
              - Deleting ExifIFD also deletes InteropIFD and MakerNotes.
              - Deleting Photoshop also deletes IPTC.

              TIFF Image:
              - Deleting EXIF only removes ExifIFD which also deletes
                InteropIFD and MakerNotes.

       -TAG<=DATFILE or -TAG<=FMT
            Set the value of a tag from the contents of file DATFILE.  The file name may also be
            given by a FMT string where %d, %f and %e represent the directory, file name and
            extension of the original FILE (see the -w option for more details).  Note that
            quotes are required around this argument to prevent shell redirection since it
            contains a "<" symbol.  "+<=" or "-<=" may also be used to add or delete specific
            list entries, or to shift date/time values.

       -@ ARGFILE
            Read command-line arguments from the specified file.  The file contains one argument
            per line (NOT one option per line -- some options require additional arguments which
            must be placed on separate lines).  Blank lines and lines beginning with "#" and are
            ignored.   Normal shell processing of arguments is not performed, which among other
            things means that arguments should not be quoted.  ARGFILE may exist relative to
            either the current directory or the exiftool directory unless an absolute pathname is
            given.

            For example, the following ARGFILE will set the value of Copyright to "Copyright
            YYYY, Phil Harvey", where "YYYY" is the year of CreateDate:

                -d
                %Y
                -copyright<Copyright $createdate, Phil Harvey

       -a   Allow duplicate tag names in the output.  Without this option, duplicates are
            suppressed.

       -b   Output requested data in binary format without tag names or descriptions.  This
            option is mainly used for extracting embedded images, but it may also be useful in
            separating values of list-type tags since a newline is used instead of a comma to
            separate these values in the -b output.

       -c FMT
            Set the print format for GPS coordinates.  FMT uses the same syntax as the "printf"
            format string.  The specifiers correspond to degrees, minutes and seconds in that
            order, but minutes and seconds are optional.  For example, the following table gives
            the output for the same coordinate using various formats:

                        FMT                  Output
                -------------------    ------------------
                "%d deg %d' %.2f"\"    54 deg 59' 22.80"   (the default)
                "%d deg %.4f min"      54 deg 59.3800 min
                "%.6f degrees"         54.989667 degrees

       -d FMT
            Set the format for date/time tag values.  Consult "strftime" man page for FMT syntax.
            The default format is equivalent to "%Y:%m:%d %H:%M:%S".  This option has no effect
            on date-only or time-only tags, ignores timezone information if present, and
            currently doesn't apply when writing.

       -D   Show tag ID number in Decimal.

       -e   Print existing tags only -- don't calculate composite tags.

       -E   Escape characters in output values for HTML.  Implied with the -h option.

       -ext EXT (or --ext EXT)
            Process only files with (-ext) or without (--ext) a specified extension.  There may
            be multiple -ext and --ext options.  Extensions may begin with a leading '.', and
            case is not significant.  For example:

                exiftool -ext .JPG DIR            # process only JPG files
                exiftool --ext crw --ext dng DIR  # process all but CRW and DNG
                exiftool --ext . DIR              # ignore if no extension

       -f   Force printing of tags even if their values are not found.

       -F[OFFSET]
            Fix the base for maker notes offsets.  A common problem with some image editors is
            that offsets in the maker notes are not adjusted properly when the file is modified.
            This may cause the wrong values to be extracted for some maker note entries when
            reading the edited file.  This option allows an integer OFFSET to be specified for
            adjusting the maker notes base offset.  If no OFFSET is given, ExifTool takes its
            best guess at the correct base.  Note that exiftool will automatically fix the
            offsets for images which store original offset information (ie. newer Canon models).
            Offsets are fixed permanently if used when writing an image.

       -fast
            Increase speed of extracting information from JPEG images.  With this option,
            ExifTool will not scan to the end of a JPEG image to check for an AFCP or
            PreviewImage trailer.  The speed benefits are small when reading images directly from
            disk, but can be substantial if piping images through a network connection.

       -g[NUM]
            Organize output by tag group.  NUM specifies the group family number, and may be 0
            (general location), 1 (specific location) or 2 (category).  If not specified, -g0 is
            assumed.  Use the -listg option to list all group names for a specified family.

       -G[NUM]
            Same as -g but print Group name for each tag.

       -h   Use HTML formatting for output.  Implies -E option.

       -H   Show tag ID number in Hexadecimal.

       -htmlDump[OFFSET]
            Generate a dynamic web page containing a hex dump of the EXIF information.  This can
            be a very powerful tool for low-level analysis of EXIF information.  The -htmlDump
            option is also invoked if the -v and -h options are used together.  The verbose level
            controls the maximum length of the blocks dumped.  An OFFSET may be given to specify
            the base for displayed offsets.  If not provided, the EXIF/TIFF base offset is used.
            Use -htmlDump0 for absolute offsets.  Currently only EXIF and TIFF information is
            dumped, but the -u option can be used to give a raw hex dump of other file formats.

       -i DIR
            Ignore specified directory name.  May be multiple -i options.

       -if EXPR
            Specify a condition to be evaluated before processing each FILE.  EXPR is a Perl-like
            expression containing tag names prefixed by "$" symbols.  It is evaluated with the
            tags from each FILE in turn, and processing proceeds only if the expression returns
            true.  Unlike Perl variable names, tag names are not case sensitive and may contain a
            hyphen or a leading group name separated by a colon.  When multiple -if options are
            used, all conditions must be satisfied to process the file.  Below are a few
            examples:

                # extract shutterspeed from all Canon images in a directory
                exiftool -shutterspeed -if '$make eq "Canon"' dir

                # add one hour to all images created on or after Apr. 2, 2006
                exiftool -alldates+=1 -if '$CreateDate ge "2006:04:02"' dir

                # set EXIF ISO value if possible, unless it is set already
                exiftool '-exif:iso<iso' -if 'not $exif:iso' dir

       -k   Pause with the message "-- press any key --" before terminating.  This option is used
            to prevent the command window from closing when run as a Windows drag and drop
            application.

       -l   Use long 2-line Canon-style output format.

       -L   Convert 16-bit Unicode characters in output to Windows Latin1 (cp1252) instead of the
            default UTF-8.  When writing, -L is used to specify that input text values are Latin1
            instead of UTF-8.

       -list, -listw, -listf, -listg[NUM], -listd
            Print a list of all valid tag names (-list), all writable tag names (-listw), all
            recognized file extensions (-listf), all tag groups [in a specified family]
            (-listg[NUM]), or all deletable tag groups (-listd).  The -list and -listw options
            may be followed by an additional argument of the form "-GROUP:All" to list all tags
            in a specific group.  With -listg, NUM may be given to specify the group family,
            otherwise family 0 is assumed. For example:

                -list               # list all tag names
                -list -EXIF:All     # list all EXIF tags
                -listw -XMP-dc:All  # list all writable XMP-dc tags
                -listf              # list all recognized file extensions
                -listg1             # list all groups in family 1
                -listd              # list all deletable groups

       -m   Ignore minor errors.  Allows writing if some minor errors occur, or extraction of
            embedded images that aren't in standard JPG format.

       -n   Read and write values as numbers instead of words.  This option disables the print
            conversion that is applied when extracting values to make them more readable, and the
            inverse print conversion when writing.  For example:

                > exiftool -Orientation -S a.jpg
                Orientation: Rotate 90 CW
                > exiftool -Orientation -S -n a.jpg
                Orientation: 6

            and the following two writing commands have the same effect

                > exiftool -Orientation='Rotate 90 CW' a.jpg
                > exiftool -Orientation=6 -n a.jpg

       -o OUTFILE or FMT
            Set the output file or directory name when writing information.  (Without this
            option, the original file is renamed to "FILE_original" and output is sent to FILE.)
            The output file name may also be specified using a FMT string in which %d, %f and %e
            represent the directory, file name and extension of FILE.  Also, %c may be used to
            add a copy number.  See the -w option for FMT string examples.

            The output file is taken to be a directory name if it already exists as a directory
            or if the name ends with '/'.  Output directories are created if necessary.  Existing
            files will not be overwritten.  Combining the -overwrite_original option with -o
            causes the original source file to be erased after the output file is successfully
            written.

            A special feature of this option allows it to be used to create certain types of
            files from scratch.  Currently, this can only be done with XMP and ICC/ICM files.
            The file is created from a combination of information in FILE and tag values assigned
            on the command line.  This is done by specifying a file extension of '.XMP', '.ICC'
            or '.ICM' for OUTFILE.  The output file may be created even if no FILE is specified,
            provided some appropriate tag values are specified on the command line.

       -overwrite_original
            Overwrite the original FILE (instead of preserving it by adding "_original" to the
            file name) when writing information to an image.  Caution: This option should only be
            used if you already have separate backup copies of your image files.  The overwrite
            is implemented by renaming a temporary file.

       -overwrite_original_in_place
            Similar to the -overwrite_original option except that an extra step is added to allow
            the original file attributes to be preserved.  On a Macintosh for example, this
            preserves the original file type, creator and icon.  This is implemented by copying
            the contents of a temporary file over the original, then deleting the temporary file.
            The extra step results in slower performance, so the -overwrite_original option
            should be used instead unless necessary.

       -p FMTFILE or STR
            Print output in the format specified by the given file or string (and ignore other
            format options).  Tag names in the format file or string begin with a "$" symbol and
            may contain an optional group name.  Case is not significant.  Braces "{}" may be
            used around the tag name to separate it from subsequent text.  Use $$ to represent a
            "$" symbol.  $/ may be used for a newline.  In the file, lines beginning with "#" are
            ignored. For example, this format file:

                # this is a comment line
                File $FileName was created on $DateTimeOriginal
                (f/$Aperture, ${ShutterSpeed}s, ISO $EXIF:ISO)

            produces output like this:

                File test.jpg was created on 2003:10:31 15:44:19
                (f/5.6, 1/60s, ISO 100)

            If a tag does not exist, the output value is set to '-' if the -f option is used.
            Otherwise a minor warning is issued and the line with the missing tag is not printed.
            However, if the -m option is used, minor warnings are ignored and the line is printed
            with an empty tag value.

       -P   Preserve date/time of original file ("FileModifyDate") when writing.

       -q   Quiet processing.  One -q suppresses normal informational messages, and a second -q
            suppresses warnings as well.  Error messages can not be suppressed, although minor
            errors may be downgraded to warnings with the -m option.

       -r   Recursively scan subdirectories.  Only meaningful if FILE is a directory name.

       -s   Print tag names instead of descriptions.  This is the short output format.  Add up to
            3 -s options for even shorter formats:

                -s        - print tag names instead of descriptions
                -s -s     - no extra spaces to column-align values
                -s -s -s  - print values only

            Also effective when combined with -t or -h options.

       -S   Very short format.  The same as two -s options.  Extra spaces used to column-align
            values are not printed.

       -ScanForXMP
            Scan all files (even unrecognized formats) for XMP information unless found already.
            When combined with the -fast option, only unrecognized file types are scanned.
            Warning: It can be time consuming to scan large files.

       -t   Output a tab-delimited list of description/values (useful for database import).  May
            be combined with -s to print tag names instead of descriptions, or -S to print tag
            values only, tab-delimited on a single line.

       -T   Output tag values in Table form.  (Equivalent to -t -S -q -f.)

       -TagsFromFile SRCFILE or FMT
            Copy tag values from SRCFILE to FILE.  Tag names on the command line after this
            option specify the tags to be copied, or excluded from the copy.  If no tags are
            specified, then all tags from the source file are copied.  More than one
            -TagsFromFile option may be used to copy tags from multiple files.

            By default, this option will commute information between same-named tags in different
            groups and write each tag to the preferred group.  This allows information to be
            automatically translated when copying between images of different formats.  However,
            if a group name is specified for a tag then the information is written to the
            original group (unless redirected to another group, see below).  This works even if
            "All" is used as a group name, so "-All:All" is used to specify that all information
            be copied to the same group in the destination file.

            SRCFILE may be the same as FILE to move information around within a file.  In this
            case, "@" may be used to represent the source file (ie.  "-TagsFromFile @"),
            permitting this feature to be used for batch processing multiple files (see note 3
            below).  Specified tags are then copied from each file in turn as it is rewritten.
            For advanced batch use, the source file name may also be specified using a FMT string
            in which %d, %f and %e represent the directory, file name and extension of FILE.  See
            -w option for FMT string examples.

            A powerful redirection feature allows a destination tag to be specified for each
            extracted tag.  With this feature, information may be written to a tag with a
            different name or group.  This is done using "'-SRCTAG>DSTTAG'" on the command line
            after -TagsFromFile ("'-DSTTAG<SRCTAG'" also works).  Note that this argument must be
            quoted to prevent shell redirection, and there is no "=" sign as when assigning new
            values.  Both source and destination tags may be prefixed by a group name, and "All"
            or "*" may be used as a tag or group name.  If no destination group is specified, the
            information is written to the preferred group.  As a convenience, "-TagsFromFile @"
            is assumed for any redirected tags which are specified without a prior -TagsFromFile
            option.  Copied tags may also be added or deleted from a list with arguments of the
            form "'-SRCTAG+>DSTTAG'" or "'-SRCTAG->DSTTAG'".

            An extension of the redirection feature allows strings involving tag names to be used
            on the right hand side of the "<" symbol with the syntax "'-DSTTAG<STR'", where tag
            names in STR are prefixed with a "$" symbol.  See the -p option for more details
            about this syntax.  Strings starting with a "=" sign must insert a single space after
            the "<" to avoid confusion with the "<=" syntax which would otherwise attempt to set
            the tag value from the contents of a file.  A single space at the start of the string
            is removed if it exists, but all other whitespace is preserved.

            See "COPYING EXAMPLES" for examples using -TagsFromFile.

            Notes:

            1) Be aware of the difference between excluding a tag from being copied (--TAG), and
            deleting a tag (-TAG=).  Excluding a tag prevents it from being copied to the
            destination image, but deleting will remove a pre-existing tag from the image.

            2) The maker note information is copied as a block, so it isn't affected like other
            information by subsequent tag assignments on the command line.  Also, since the
            PreviewImage referenced from the maker notes may be rather large, it is not copied,
            and must be transferred separately if desired.

            3) When performing complex batch processing, it is important to note that the order
            of operations is different for tags copied in batch mode.  In general, tags are
            copied from batch-mode files after all other command-line arguments have been
            applied.  (The exception is that a group delete is always performed last if there are
            no subsequent tag assignments on the command line.)  For example, the following two
            commands are not equivalent:

                # (not batch mode):  Sets xmp:title to 'NEW'
                exiftool -tagsfromfile a.jpg -xmp:title -xmp:title=NEW a.jpg

                # (batch mode):  Preserves original title if it exists
                exiftool -tagsfromfile @ -xmp:title -xmp:title=NEW a.jpg

       -u   Extract values of unknown tags.  Add another -u to also extract unknown information
            from binary data blocks.

       -U   Extract values of unknown tags as well as unknown information from binary data
            blocks.  This is the same as two -u options.

       -v[NUM]
            Print verbose messages.  NUM specifies the level of verbosity in the range 0-5, with
            higher numbers being more verbose.  If NUM is not given, then each -v option
            increases the level of verbosity by 1.  This option suppresses normal console output
            unless specific tags are being extracted.  -v0 is used when writing to print only the
            processed file names, and the "Nothing changed" message for files that were not
            modified.

       -ver Print version number and exit.

       -w EXT or FMT
            Write console output to a file with name ending in EXT for each source file.  The
            output file name is obtained by replacing the source file extension (including the
            '.') with the specified extension (and a '.' is added to the start of EXT if it
            didn't contain one).  Alternatively, a FMT string may be used to give more control
            over the output file name and directory.  In the format string, %d, %f and %e
            represent the directory, filename and extension of the source file, and %c represents
            a copy number which is automatically incremented if the file already exists.  %d
            includes the trailing '/' if necessary, but %e does not include the leading '.'.  For
            example:

                -w %d%f.txt       # same effect as "-w txt"
                -w dir/%f_%e.out  # write files to "dir" as "FILE_EXT.out"
                -w dir2/%d%f.txt  # write to "dir2", keeping dir structure
                -w a%c.txt        # write to "a.txt" or "a1.txt" or "a2.txt"...

            Existing files will not be overwritten, and output directories are created
            automatically if necessary.

            Note:  In a Windows BAT file the '%' character is represented by "%%", so an argument
            like "%d%f.txt" is written as "%%d%%f.txt".

            Advanced features:  A substring of the original file name, directory or extension may
            be taken by specifying a field width immediately following the '%' character.  If the
            width is negative, the substring is taken from the end.  The substring position
            (characters to ignore at the start or end of the string) may be given by a second
            optional value after a decimal point.  For example:

                Input File Name     Format Specifier    Output File Name
                ----------------    ----------------    ----------------
                Picture-123.jpg     %7f.txt             Picture.txt
                Picture-123.jpg     %-.4f.out           Picture.out
                Picture-123.jpg     %7f.%-3f            Picture.123
                Picture-123a.jpg    Meta%-3.1f.txt      Meta123.txt

            For %c, these modifiers have a different effects.  If a field width is given, the
            copy number is padded with zeros to the specified width.  A leading '-' adds a dash
            before the copy number, and a '+' adds an underline.  By default, a copy number of
            zero is omitted, but this can be changed by adding a decimal point to the modifier.
            For example:

                -w A%-cZ.txt      # AZ.txt, A-1Z.txt, A-2Z.txt ...
                -w B%5c.txt       # B.txt, B00001.txt, B00002.txt ...
                -w C%.c.txt       # C0.txt, C1.txt, C2.txt ...
                -w D%-.c.txt      # D-0.txt, D-1.txt, D-2.txt ...
                -w E%-.4c.txt     # E-0000.txt, E-0001.txt, E-0002.txt ...
                -w F%-.4nc.txt    # F-0001.txt, F-0002.txt, F-0003.txt ...
                -w G%+c.txt       # G.txt, G_1.txt G_2.txt ...
                -w H%-lc.txt      # H.txt, H-b.txt, H-c.txt ...

            All format codes may be modified by 'l' or 'u' to specify lower or upper case
            respectively (ie. "%le" for a lower case file extension).  When used to modify the
            copy number (%c), the numbers are changed to an alphabetical base (see example H
            above).  Also, %c may be modified by 'n' to count using natural numbers starting from
            1, instead of 0 (see example F).

            This same FMT syntax is used with the -o and -TagsFromFile options, although %c is
            only valid for output file names.

       -x TAG
            Exclude the specified tag.  There may be multiple -x options.  This has the same
            effect as --TAG on the command line.  May also be used following a -TagsFromFile
            option to exclude tags from being copied.

       -z   When reading, causes information to be extracted from .gz and .bz2 compressed images.
            (Only one image per archive.)  When writing, causes compressed information to be
            written if supported by the image format.  (ie.  The PNG format supports compressed
            text.)

       Advanced Options

       The following options allow complex processing to be performed with a single command
       without the need for additional scripting.  This may be particularly useful for
       implementations such as Windows drag-and-drop applications.  These options may also be
       used to improve performance in multi-pass processing by reducing the overhead required to
       load exiftool for each invocation.

       -common_args
            Specifies that all arguments following this option are common to all executed
            commands when -execute is used.  This is the only option that may not be used inside
            a -@ ARGFILE.

       -execute
            Execute command for all arguments up to this point on the command line.  Allows
            multiple commands to be executed from a single command line.

       -srcfile FMT
            Specify a different source file to be processed based on the name of the original
            file.  This may be useful in some special situations for processing related preview
            images or sidecar files.  See the -w option for a description of the FMT syntax.
            Note that file name FMT strings for all options are based on the original file name
            specified on the command line, not the name of the source file specified by -srcfile.

READING EXAMPLES
       exiftool -a -u -g1 a.jpg
            Print all meta information in an image, including duplicate and unknown tags, sorted
            by group (for family 1).

       exiftool -common dir
            Print common meta information for all images in "dir".

       exiftool -s -ImageSize -ExposureTime b.jpg
            Print ImageSize and ExposureTime tag names and values.

       exiftool -l -canon c.jpg d.jpg
            Print standard Canon information from two image files.

       exiftool -r -w .txt -common pictures
            Recursively extract common meta information from files in "pictures" directory,
            writing text output into files with the same names but with a ".txt" extension.

       exiftool -p '$filename has date $dateTimeOriginal' -q -f dir
            Print one line of output containing the file name and DateTimeOriginal for each image
            in directory "dir".

       exiftool -b -ThumbnailImage image.jpg > thumbnail.jpg
            Save thumbnail image from "image.jpg" to a file called "thumbnail.jpg".

       exiftool -b -PreviewImage 118_1834.JPG > preview.jpg
            Extract preview image from JPG file and write it to "preview.jpg".

       exiftool -b -JpgFromRaw -w _JFR.JPG -ext CRW -r .
            Recursively extract JPG image from all Canon CRW files in the current directory,
            adding "_JFR.JPG" for the name of the output JPG files.

       exiftool -d '%r %a, %B %e, %Y' -DateTimeOriginal -S -s *.jpg
            Print formatted date/time for all JPG files in a directory.

       exiftool -IFD1:XResolution -IFD1:YResolution
            Extract image resolution from EXIF IFD1 information (thumbnail image IFD).

       exiftool -xmp -b a.jpg > out.xmp
            Extract complete XMP data record intact from "a.jpg" and write it to "out.xmp" using
            the special "XMP" tag (see the Extra tags in Image::ExifTool::TagNames).

       exiftool -icc_profile -b -w icc image.jpg
            Save complete ICC_Profile from an image to an output file with the same name and an
            extension of ".icc".

       exiftool -htmldump -w tmp/%f_%e.html t/images
            Generate HTML pages from a hex dump of EXIF information in all images from the
            "t/images" directory.  The output HTML files are written to the "tmp" directory
            (which is created if it didn't exist), with names of the form 'FILENAME_EXT.html'.

WRITING EXAMPLES
       Note that quotes are necessary around arguments which contain certain special characters
       such as ">", "<" or any white space.  These quoting techniques are shell dependent, but
       the examples below will work for most Unix shells.  With the Windows cmd shell however,
       double quotes should be used (ie. -Comment="This is a new comment").

       exiftool -Comment='This is a new comment' dst.jpg
            Write new comment to a JPG image (replaces any existing comment).

       exiftool -comment= -o newdir *.jpg
            Remove comment from all JPG images in the current directory, writing the modified
            images to a new directory.

       exiftool -keywords=EXIF -keywords=editor dst.jpg
            Replace existing keyword list with two new keywords ("EXIF" and "editor").

       exiftool -Keywords+=word -o newfile.jpg src.jpg
            Copy a source image to a new file, and add a keyword ("word") to the current list of
            keywords.

       exiftool -credit-=xxx dir
            Delete Credit information from all files in a directory where the Credit value was
            ("xxx").

       exiftool -all= dst.jpg
            Delete all meta information from an image.

       exiftool -all= -comment='lonely' dst.jpg
            Delete all meta information from an image and add a comment back in.  (Note that the
            order is important: "-comment='lonely' -all=" would also delete the new comment.)

       exiftool -all= --jfif:all dst.jpg
            Delete all meta information except JFIF group from an image.

       exiftool -Photoshop:All= dst.jpg
            Delete Photoshop meta information from an image (note that the Photoshop information
            also includes IPTC).

       exiftool -r -XMP-crss:all= DIR
            Recursively delete all XMP-crss information from images in a directory.

       exiftool '-ThumbnailImage<=thumb.jpg' dst.jpg
            Set the thumbnail image from specified file (Note: The quotes are neccessary to
            prevent shell redirection).

       exiftool '-JpgFromRaw<=%d%f_JFR.JPG' -ext CRW -r .
            Recursively write JPEG images with filenames ending in "_JFR.JPG" to the JpgFromRaw
            tag of like-named files with extension ".CRW" in the current directory.  (This is the
            inverse of the "-JpgFromRaw" command of the "READING EXAMPLES" section above.)

       exiftool -DateTimeOriginal-='0:0:0 1:30:0' dir
            Adjust original date/time of all images in directory "dir" by subtracting one hour
            and 30 minutes.  (This is equivalent to "-DateTimeOriginal-=1.5".  See
            Image::ExifTool::Shift.pl for details.)

       exiftool -createdate+=3 -modifydate+=3 a.jpg b.jpg
            Add 3 hours to the CreateDate and ModifyDate timestamps of two images.

       exiftool -AllDates+=1:30 -if '$make eq "Canon"' dir
            Shift the values of DateTimeOriginal, CreateDate and ModifyDate forward by 1 hour and
            30 minutes for all Canon images in a directory.  (The AllDates tag is provided as a
            shortcut for these three tags, allowing them to be accessed via a single tag.)

       exiftool -xmp:city=Kingston image1.jpg image2.nef
            Write a tag to the XMP group of two images.  (Without the "xmp:" this tag would get
            written to the IPTC group since "City" exists in both, and IPTC is preferred by
            default.)

       exiftool -LightSource-='Unknown (0)' dst.tiff
            Delete "LightSource" tag only if it is unknown with a value of 0.

       exiftool -whitebalance-=auto -WhiteBalance=tung dst.jpg
            Set "WhiteBalance" to "Tungsten" only if it was previously "Auto".

       exiftool -o %d%f.xmp dir
            Create XMP meta information data files for all images in "dir".

       exiftool -o test.xmp -owner=Phil -title='XMP File'
            Create an XMP data file only from tags defined on the command line.

       exiftool '-ICC_Profile<=%d%f.icc' image.jpg
            Write ICC_Profile to an image from a ".icc" file of the same name.

COPYING EXAMPLES
       These examples demonstrate the ability to copy tag values between files.

       exiftool -TagsFromFile src.crw dst.jpg
            Copy the values of all writable tags from "src.crw" to "dst.jpg", writing the
            information to the preferred groups.

       exiftool -TagsFromFile src.jpg -all:all dst.jpg
            Copy the values of all writable tags from "src.jpg" to "dst.jpg", preserving the
            original tag groups.

       exiftool -all= -tagsfromfile src.jpg -exif:all dst.jpg
            Erase all meta information from "dst.jpg" image, then copy EXIF tags from "src.jpg".

       exiftool -tagsfromfile a.jpg out.xmp
            Copy meta information "a.jpg" to an XMP data file.  If the XMP data file "out.xmp"
            already exists, it will be updated with the new information.  Otherwise the XMP data
            file will be created.  Only XMP, ICC and MIE files may be created like this (other
            file types may be edited but not created).  See "WRITING EXAMPLES" above for another
            technique to generate XMP files.

       exiftool -tagsFromFile a.jpg -XMP:All= -ThumbnailImage= -m b.jpg
            Copy all meta information from "a.jpg" to "b.jpg", deleting all XMP information and
            the thumbnail image from the destination.

       exiftool -TagsFromFile src.jpg -title -author=Phil dst.jpg
            Copy title from one image to another and set a new author name.

       exiftool -TagsFromFile a.jpg -ISO -TagsFromFile b.jpg -comment dst.jpg
            Copy ISO from one image and Comment from another image to a destination image.

       exiftool -tagsfromfile src.jpg -exif:all --subifd:all dst.jpg
            Copy only the EXIF information from one image to another, excluding SubIFD tags.

       exiftool '-DateTimeOriginal>FileModifyDate' dir
            Use the original date from the meta information to set the same file's filesystem
            modification date for all images in a directory.  (Note that "-TagsFromFile @" is
            assumed if no other -TagsFromFile is specified when redirecting information as in
            this example.)

       exiftool -TagsFromFile src.jpg '-all>xmp:all' dst.jpg
            Copy all possible information from "src.jpg" and write in XMP format to "dst.jpg".

       exiftool -@ iptc2xmp.args -iptc:all= a.jpg
            Translate IPTC information to XMP with appropriate tag name conversions, and delete
            the original IPTC information from an image.  This example uses iptc2xmp.args, which
            is a file included with the ExifTool distribution that contains the required
            arguments to convert IPTC information to XMP format.  Also included with the
            distribution is xmp2iptc.args, which performs the inverse conversion.

       exiftool -tagsfromfile %d%f.CRW -r -ext JPG dir
            Recursively rewrite all "JPG" images in "dir" with information copied from the
            corresponding "CRW" images in the same directories.

       exiftool '-make+>keywords' image.jpg
            Add camera make to list of keywords.

       exiftool '-comment<ISO=$exif:iso Exposure=${shutterspeed}' dir
            Set the Comment tag of all images in "dir" from the values of the EXIF:ISO and
            ShutterSpeed tags.  The resulting comment will be in the form "ISO=100
            Exposure=1/60".

       exiftool -TagsFromFile src.jpg -icc_profile dst.jpg
            Copy ICC_Profile from one image to another.

       exiftool -if '$jpgfromraw' -b -jpgfromraw -w %d%f_%ue.jpg -execute -if '$previewimage' -b
       -previewimage -w %d%f_%ue.jpg -execute -tagsfromfile @ -srcfile %d%f_%ue.jpg
       -overwrite_original -common_args --ext jpg DIR
            [Advanced] Extract JpgFromRaw or PreviewImage from all but JPG files in DIR, saving
            them with file names like "image_EXT.jpg", then add all meta information from the
            original files to the extracted images.  Here, the command line is broken into three
            sections (separated by -execute options), and each is executed as if it were a
            separate command.  The -common_args option causes the "--ext jpg DIR" arguments to be
            applied to all three commands, and the -srcfile option allows the extracted JPG image
            to be the source file for the third command (whereas the RAW files are the source
            files for the other two commands).

RENAMING EXAMPLES
       By writing the "FileName" and "Directory" tags, files are renamed and/or moved to new
       directories.  This can be particularly useful and powerful for organizing files by date
       when combined with the -d option.  New directories are created as necessary, but existing
       files will not be overwritten.  The format codes %d, %f and %e may be used in the new file
       name to represent the directory, name and extension of the original file, and %c may be
       used to add a copy number if the file already exists (see the -w option for details).
       Note that if used within a date format string, an extra '%' must be added to pass these
       codes through the date/time parser.  (And further note that in a Windows batch file, all
       '%' characters must also be escaped, so in this extreme case '%%%%f' is necessary to pass
       a simple '%f' through the two levels of parsing.)

       exiftool -filename=new.jpg dir/old.jpg
            Rename "old.jpg" to "new.jpg" in directory "dir".

       exiftool -directory=%e dir
            Move all files from directory "dir" into directories named by the original file
            extensions.

       exiftool '-Directory<DateTimeOriginal' -d %Y/%m/%d dir
            Move all files in "dir" into a directory hierarchy based on year, month and day of
            "DateTimeOriginal".  ie) This command would move the file "dir/image.jpg" with a
            "DateTimeOriginal" of "2005:10:12 16:05:56" to "2005/10/12/image.jpg".

       exiftool '-filename<%f_${focallength}.%e' dir
            Rename all files in "dir" by adding FocalLength to the file name.

       exiftool '-FileName<CreateDate' -d %Y%m%d_%H%M%S%%-c.%%e dir
            Rename all images in "dir" according to the "CreateDate" date and time, adding a copy
            number with leading '-' if the file already exists ("%-c"), and preserving the
            original file extension (%e).  Note the extra '%' necessary to escape the filename
            codes (%c and %e) in the date format string.

       exiftool -r '-FileName<CreateDate' -d %Y-%m-%d/%H%M_%%f.%%e dir
            Both the directory and the filename may be changed together via the "FileName" tag if
            the new "FileName" contains a '/'.  The example above recursively renames all images
            in a directory by adding a "CreateDate" timestamp to the start of the filename, then
            moves them into new directories named by date.

       exiftool '-FileName<${CreateDate}_$filenumber.jpg' -d %Y%m%d *.jpg
            Set the filename of all JPG images in the current directory from the CreateDate and
            FileNumber tags, in the form "20060507_118-1861.jpg".

PIPING EXAMPLES
       cat a.jpg | exiftool -
            Extract information from stdin.

       exiftool image.jpg -thumbnailimage -b | exiftool -
            Extract information from an embedded thumbnail image.

       cat a.jpg | exiftool -iptc:keywords+=fantastic - > b.jpg
            Add an IPTC keyword in a pipeline, saving output to a new file.

       wget -qO - http://a.domain.com/bigfile.jpg | exiftool -fast -
            Extract information from an image over the internet using the GNU wget utility.  The
            -fast option prevents exiftool from scanning for trailer information, so only the
            meta information header is transferred.

       exiftool a.jpg -thumbnailimage -b | exiftool -comment=wow - | exiftool a.jpg
       -thumbnailimage'<=-'
            Add a comment to an embedded thumbnail image.  (Why anyone would want to do this I
            don't know, but I've included this as an example to illustrate the flexibility of
            ExifTool.)

BUGS
       ExifTool does not handle information stored in the resource fork on Macintosh filesystems.

AUTHOR
       Copyright 2003-2008, Phil Harvey

       This is free software; you can redistribute it and/or modify it under the same terms as
       Perl itself.

SEE ALSO
       Image::ExifTool(3pm), Image::ExifTool::TagNames(3pm), Image::ExifTool::Shortcuts(3pm),
       Image::ExifTool::Shift.pl



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