New digikam user - questions/comments

[Rajesh Varadarajan]

I've started using digikam 8.6.0 on linux (fedora 42) over the last 2
weeks, really impressed with how mature it is. I experienced a couple of
issues/and have a couple of questions, but I could not find a
specific answer in the archives (at least in 2025).

1) Once an import is complete, is there a way for me to look at a log file
to see what happened in the last import. Better still, a running log show
the import process will also be useful.

2) I have a Canon EOS R6 camera and I imported the photos/videos using the
USBC connection from the R6 to the linux fedora laptop. The SD card
filesystem is formatted as an ex fat --  some video files are > 4G,
however, fedora 42 uses the gphoto2 PTP interface and all files > 4G
(typically large video files) show as size 0. digikam did not give any
notifications or popup information about the import warning me of size 0
file imports, it will be nice for digikam to give this notice in BOLD -- so
that less attentive users don't nuke their photos/videos thinking that
their import was successful.

My understanding is that this limitation is to do with the 32 bit limit
size field in the PTP protocol, is there a way to get around this and
continue to use the PTP. The alternative is to pull the SD card out and use
an SD card reader and as long as it is mounted as ex FAT, the file size
seems appropriate and the import went ok.

3) I also have some DJI footage and the video's from here are not playing
(4k HEV?) -- what packages do I need in linux to make this work?

4) As I am a bit paranoid about losing photos/videos, I'd like to have a
script that runs a hash function like md5 on the photo/video on my SD card
and verify that the image with the appropriate hash exists in the sqlite3
db of digikam. However, I don't see the specific hash function being
documented. The hash value in the Images sqlite3 table does not seem to be
md5. What algorithm is being used and can a user run this hash algorithm on
an image outside of the UI? This would improve the fidelity of the import
at least in my mind. I'm sure other advanced users would appreciate this.

5) In step 2 above, when I first imported using PTP (and > 4G files were
missing) and then later switched to importing using the SD card, all the
photos/videos were duplicated with _v1 suffixed to the duplicates. So, what
is the method that digikam uses to determine if a photo is new or not. I
selected the Download new in the 2nd import using the SD card.

thanks!
rajesh
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