The moment people most need their dash cam footage is the moment they most fear it's gone. The camera fell off the mount in the impact. The SD card looks damaged. The other driver drove off with the device. The footage wasn't saved.
Here's what's actually recoverable and what isn't — and the steps that maximize your chances in the first few minutes after an accident.
Step One: Act Immediately After the Incident
Loop recording overwrites old footage continuously. If your camera is still running after an accident, it will eventually overwrite the incident clip — even if the G-sensor flagged it.
The three things to do immediately:
- Check if the incident was flagged: Open your dash cam app or look at the camera's LED/screen. A flagged/locked clip has a lock icon and will not be overwritten.
- If not flagged, manually lock the clip now: Most cameras have a button (physical or in-app) to lock the current or recent clip. Lock it before doing anything else.
- If cloud-connected, verify upload: Connected cameras like Nexar upload incident clips automatically. Check the app to confirm the clip is visible in your incident history.
Do all three before you move the car, call anyone, or engage with the other driver. The footage is the priority.
What "Deleted" Actually Means on a Dash Cam
When loop recording overwrites old footage, it doesn't immediately erase the data — it marks the space as available for new data. The old footage often still physically exists on the card until new data is written over it.
This means recovery is sometimes possible even after overwriting — but the window is short, and every new mile driven narrows it.
Recovery Scenarios and What's Possible
Scenario 1: Clip Was G-Sensor Flagged (Most Common)
Flagged clips are locked from overwriting. The footage is on the card, intact. Remove the card from the camera carefully and copy the clip to your computer using a card reader — do not rely on the in-camera playback for this. Copy, don't move. Keep the original on the card as backup while you share a copy.
Scenario 2: Clip Was Not Flagged, Loop Recording Already Overwrote It
If the loop has already written new footage over the incident, recovery depends on how much has been written since. Immediately stop the camera — remove the SD card or turn off the camera completely. Every additional minute of recording further overwrites the incident footage.
Use data recovery software on the SD card. Options: Recuva (Windows, free), PhotoRec (cross-platform, free), or Disk Drill (Mac/Windows, paid). These tools scan the card for file fragments that haven't been fully overwritten. Recovery success varies — a few minutes of overwriting may still leave the incident clip recoverable. An hour of driving after will likely render it unrecoverable.
Scenario 3: SD Card Physically Damaged
If the camera was damaged in the incident and the SD card is physically damaged (bent, cracked, or the contacts are burnt), consumer recovery software won't help. Professional data recovery services (DriveSavers, Ontrack) can recover data from physically damaged media, but costs start at $300–$1,500. Only warranted if the footage has significant legal or financial value.
Scenario 4: Camera Was Stolen After the Incident
If the camera was stolen — or if the other party removed it — and you use a cloud-connected camera, your footage is already off the device. This is the definitive argument for cloud connectivity. The Nexar app stores incident clips remotely, so the footage exists independently of whether the hardware does.
Without cloud backup and with the camera gone, recovery is not possible.
How to Use Recovery Software on an SD Card
If you need to attempt recovery:
- Remove the SD card from the camera immediately and do not reinsert it
- Use a microSD-to-USB adapter to connect it to a computer
- Download Recuva (Windows) or PhotoRec (any OS) — both are free
- Run a deep scan on the SD card — not a quick scan
- Filter results for video file types (MP4, MOV, AVI, or TS depending on your camera's format)
- Preview recoverable files before restoring to identify the incident clip
- Save recovered files to a different drive — never restore to the same card you're recovering from
What to Do If You Have Cloud Backup
With a cloud-connected camera:
- Open the app and navigate to Incidents or Trip History
- Find the incident clip — G-sensor-triggered clips appear in the Incidents section
- Download the clip to your phone in the highest available quality
- Back up to a second location immediately (email yourself, save to cloud storage)
- Do not delete from the app until the insurance or legal matter is fully resolved
Frequently Asked Questions
How long does Nexar store incident footage?
Nexar stores incident-flagged clips in the cloud based on your subscription plan. Always verify your plan's retention period and ensure footage is downloaded locally for any clip you may need in an insurance or legal proceeding.
Can I recover footage from a totally dead camera?
Possibly, from the SD card. Remove the card from the dead camera and attempt recovery via a computer. The camera's electronics failing doesn't affect the card's data as long as the card itself is undamaged.
What format does dash cam footage record in?
Most cameras use MP4 or MOV container format with H.264 or H.265 (HEVC) encoding. Some cameras use TS (Transport Stream) format. Recovery software can find all of these — just filter by video file extension when previewing recovered files.
How do I prevent this situation in the future?
Use a cloud-connected camera. This is the only reliable solution — footage is off the device before you ever need it. For cameras without cloud, manually download important trips, format the SD card regularly, and confirm the G-sensor is set to an appropriate sensitivity level to catch incidents.