This is not directly possible for now but with a little script it should be for XML abd AMC catalogs.
Process for each picture:
- Export picture file in a tmp folder
- Rename picture file with name you want
- Import picture (in preferences, choose to keep original filename when you import a picture)
But for export to HTML, this is not possible for now.
I will see to add an option to use other fields using a template (such as custom title for formatted title set in preferences)