Eximp moves photos, and other media from cameras and phones, into a media library. It stores the files named as a creation date in ISO format, and with a sensible year/month directory structure.
Eximp will recurse down directory structures similar (or not) to the ones it creates. In this sense it will work on archives created by other importers.
If the photo is a JPEG file, eximp uses the EXIF metadata to discern the date and also constructs a make-model string. If it's not JPEG, it tries to use libavformat to find the metadata. For other formats with no metadata, eximp discerns a date from the filename if possible. This covers most cases where photos come from camera memory or a Dropbox folder.
There are also readers for PNG and MP4 file formats. In practice I never got any joy from these. PNG typically doesn't contain any useful metadata; that's to say there are placeholders but the content creators don't use them. MP4 for sure has the data, but mp4v2 fails on the test cases I gave it. Bento4 will read the files that mp4v2 fails on, but it's GPL so I didn't take it further given that avformat will read them.
-- Phil Garner Earth, early third millenuim.