NAME

       epinfo - extract technical information from digital camera generated files

SYNOPSIS

       epinfo [-h] [-V] [-z] [-r] [-t] [-f fmt] [-T <TagName>] <filename> ...

DESCRIPTION

       This  command  extracts  the contents of TIFF directory of Exif files or APP12 marker from
       JFIF files, parses it and optionaly finds specific data inside it.  If used without -T, -r
       and  -t  options,  dumps the complete block data in human readable format.  With -r and -t
       options, renames and changes timestamp of the files.

OPTIONS

       -h   This option produces a help screen of all options and commands.

       -V   This option prints software revision information.

       -z   This option sets no time-zone processing mode.  Use this option if the camera's clock
            is  set up shifted by the local timezone offset (as it is when you set it manually to
            the local time).

       -r   Rename files, generating new name based on the time of snapshot and -f option value.

       -t   Set timestamp of the files to the time of snapshots.

       -f timeformat
            This option allows to specify the  format  for  automatically  generated  image  file
            names;  the value is used as the format string for strftime(3) function.  By default,
            names of the format "MMDD_NNN.jpg" are generated, where MM is a month, DD is  a  day,
            and NNN is a count starting from 001.  A good starting point for the timeformat value
            could be "%Y_%m_%d-%H_%M_%S.jpg".  If the format  string  contains  context  "%%XXXd"
            where  XXX  are digits, it is taken for the count, i.e. if the file with such name is
            present, next count is tried.  If the format string does not contain  "%%XXXd"  part,
            the count field, if necessary, is appended at the end of the name.

            A  few single-character formats are used as shortcuts.  "x" makes the name of seconds
            since the epoch in hexadecimal format (8 characters + ".jpg"),  "d"  -  the  same  in
            decimal  format  (10 characters), "1" stands for default format "%m%d_%%03d.jpg", "2"
            stands for "%y%m%d%%02d.jpg", "3" stands for "%Y_%m_%d-%H_%M_%S.jpg" and 4 stands for
            "%Y/%m/%d/%H_%M_%S.jpg".   The program attempts to create intermediate directories is
            necessary (and possible).

       -T <TagName>
            Output the value of this keyword in the information block.  Note  that  keywords  are
            case  sensitive.   TagName DateTime has special meaning: if the file is Exif, it just
            prints the value of DateTime tag, and if the format is  old  APP12,  it  outputs  the
            value of TimeDate tag in the same format as Exif DateTime.

ARGUMENTS

       <filename> ...
            List of filenames to process.

EXAMPLES

       % epinfo -f3 -rt pic00001.jpg

       % epinfo -T FNumber 0512_003.jpg

OTHER NOTES

       The  latest  version  of this tool can be found at ftp://ftp.average.org/pub/photopc/; see
       also WWW page at http://www.average.org/digicam/.

       Trademarks are properties of their respective owners.

COPYRIGHT

       The  program  is  copyrighted  by  Eugene  G.  Crosser  <crosser@average.org>  and  freely
       distributable.  See README file for details.

SEE ALSO

       photopc(1)