Import and Synchronize do not work on all files (Lightroom Classic 14.0.1)

[xapitof]

Lightroom Classic Version Number: 14.0.1 [202410161356-30922cfc] + camera RAW 17.0
OS Version Number: Windows 10 Pro 22H2 Build 19045.5011

Steps to reproduce:

1.  File=>Import photos & videos. Import assistant detects 71 files to import whereas there are 102 files in the folder. 
2. Select setting "Add" (files are already copied on the hard drive, we just want to reference them in the catalog)
3. Wait for the import to happen
4. Check imported files vs. folder context
Expected result: 102 files imported
Actual result: 71 files actually imported

Additional informations :

- the issue started after LC14.0.1 update and I used the "synchronize" function on a folder to add files afterwards into a folder I was already working on. This folder sync then contained mixed files type : Nikon Z6-II RAW + videos + DNG RAW from my phone (Xiaomi 13T pro)  + JPEG files whereas originally there was only Nikon RAS + vids. I have no clue if the mix of type of files is the origin of the problem.

- I tried to remove completely all the folder and files from the catalog and reimport everything, with still the issue on the same files

- Sync does not work either

See video enclosed.

[xapitof]

I got the root cause : the video files.

LR stucks on video files import.

I eliminated the videos from the folder and import and synchro went fine.

I add back a video, import or synchro blocks again.

[xapitof]

More precisely the bug probably comes from the preview dialog box management on video files.

The preview from the import/sync dialog box does not show miniature after the vid files, and even when UNselecting the video files then start import with only the images selected, the import queue would stuck forever.

[John R Ellis]

Moderators, @Rikk Flohr: Photography: Please merge with this thread about importing video on Windows 10:

https://community.adobe.com/t5/lightroom-classic-bugs/p-import-fails-when-it-encounters-a-corrupt-vi...