Exporting image info for a batch of files

[Birkinstein]

I would love to know if there is a way of exporting image file information for a batch of files. Let me explain why:

I make animations from (thousands of) image files, rendered into a movie file with FFMPEG. I want to make soundtracks for the animations whose parameters vary with the movie, for example: to allow sound effects volume to vary in proportion with certain image properties, such as number of colours or file (disk) size.

It would be useful if I could generate a text file with lists of this information for a given folder of images.

Does anyone know if this is possible in IrfanView, and if so how?

[Laurent]

Hi Birkinstein,

This is not possible in IrfanView.

Laurent

[Birkinstein]

OK, well thanks anyway Laurent.

I think I've found another way using Mathematica to analyse images - it takes a lot of processing but it does the job.

But can you tell me, just out of interest, how IrfanView calculates the number of unique colours in such a short time? (this info isn't written in the file data, I assume)