Exclude filetypes from library scan

It would be great if there was an option to exclude certain file types from the library scan. In my case I have lots of iso images which are correctly detected as movies but which I don’t want included in my library. In most cases I end up with two entries for each movie as I have the iso and mkv stored on my nas. THere are ways around this but that would require a different share structure on my nas and I don’t want to do that.


Hope this is achievable.