[Unsolved] Place a continuous shot run into a directory

[jmac698]

I'd like to basically place runs of shots into their own directories.  For example, in astrophotography I might snap off 25 frames of the moon as it crawls across my field of view, then change some settings, move the view to the side, and snap off another set (no star tracker needed).

So what I basically want to do, is for each file:
-if the current file is more than 1 second later in CreateDate than the last one, increment a number. If there's no last file, just compare against epoch or something, basically always increment at the start (with flexible date field and max time difference, could use first date in streak as directory name).
-move it into a directory based on the number
-would also help if it moves streaks only into a directory, so you don't get directories with single files. This would need more state than a file at a time though.

This way, the end of a set of continuous shots will increment the number, and the run will go into it's own directory.
Perhaps I can use the IF command with Perl, if it accepts it.  And in Perl, you can subtract two dates:
https://stackoverflow.com/questions/18525671/how-to-calculate-date-difference-in-perl

I wonder if this can even be done, and if you can embed enough perl to do it directly in exiftool.  If not... I will post under feature request if I don't get an answer.  It seems to me a quite obvious use, especially more down to earth situations like sets of sports shots where you want to pick the best one (I wouldn't use directories there though, just unique filenames).

[Phil Harvey]

You could do this with a user-defined Composite tag based on DateTimeOriginal or any other date/time tag.  The trick would be to use a static variable to keep track of the previous file time, then use the -fileorder option to process the files in order of DateTimeOriginal.

I don't have time to give you specific code right now, but hopefully that's enough to get you started.  Take a look at the sample config file for examples of how to create a user-defined Composite tag.

- Phil