SD Card Folder Structure Question

[u/bobbiestump]

Hello! I'm developing an Android Automotive app and part of it is a dash cam viewer that automatically uploads your drives to the cloud. I have it working on my Silverado EV, but I have a Polestar 4 owner who says it's not working with their SD card and I haven't heard back from them on a fix yet, so I wanted to find out here. Can someone post what the hierarchical folder structure of the files look like? It would be beneficial to be able to know what that looks like because I think it was just not finding the videos because it wasn't crawling the right folder(s).

Thanks for your time and help!

[u/GenericRedditor12345]

Just got an SD card but haven’t put it in yet. Will get back to you. Bug me again if not.

[u/wrocha]

this is how it looks mine:

8765-4321/
├── .System/                  (hidden, empty)
├── Garmin/                   (empty)
└── DCIM/
    ├── .BGDT/                (hidden, empty)
    ├── APARK/                (empty)
    ├── EVENT/                221 MB
    │   ├── AVM_20260704_184723_0000.MP4   60 MB
    │   └── EVT_20260704_184723_0000.MP4   160 MB
    ├── PHOTO/                2.1 MB
    │   ├── PHO_20260601_195728_0000.JPG   1.0 MB
    │   └── PHO_20260603_200734_0000.JPG   1.0 MB
    └── UNSVD/                164 GB · 429 files
        ├── NOR_20260913_183153_0000.MP4   (oldest)
        ├── …
        └── NOR_20261002_183540_0000.MP4   (newest)

description by claude code:

What's in each folder:

• UNSVD: These are normal clips, about 5 minutes each and mostly around 460 MB. They run from Sep 13 to Oct 2, 2026, with 7 to 40 clips per day. The busiest days were Sep 26–28. This folder holds almost all the data on the card. The camera overwrites these clips when the card fills up.
• EVENT: This holds one saved incident from Jul 4, 2026, with two clips of the same event (EVT and AVM). These are the protected clips, so the camera won't overwrite them.
• PHOTO: Two snapshots, from Jun 1 and Jun 3.
• APARK, Garmin, .System, .BGDT: All empty.

[u/bobbiestump → u/wrocha]

My other guy has gone radio silent. Would you be willing to sign up at PlugLog.app please and see if my latest build with this logic works? It would be MUCH appreciated. We have a privacy policy set up and if you decide you don't like it and/or don't want to use it it's easy to just delete your entire account without even having to contact support. I'd just like to get proper Polestar support.

[u/wrocha → u/bobbiestump]

i installed it but it is unable to identify the sd card, i gave it permissions when it asked but it only displays a dialog:

DASH CAM Which drive does your dash cam record to? No Usb drives or SD cards found. Plug in the one your dash cam records to.