Key takeaways
- Lock the clip immediately: loop recording overwrites footage within minutes or hours.
- Copy the original file, with its date and time, to a second place the same day.
- Give the footage to your insurer and the police, not to social media.
- Rules on dashcams and publishing footage vary by country: check before you post or install one.
In a collision, it’s often one driver’s word against the other’s. Dashcam footage removes the doubt: speed, traffic lights, indicators, who braked and who didn’t. But dashcams record in a loop, and the clip that matters can disappear if you don’t act quickly. Here’s how to make your footage count.
1. Save the clip right away
- Most dashcams lock a clip automatically when they detect an impact. Check that it did, or press the emergency or lock button.
- If the camera has an app, download the clip to your phone at the scene.
- Don’t keep driving for hours with the same memory card: loop recording may overwrite the clip.
- Note the clip’s file name and the time shown on screen.
2. Check the date and time
A wrong date or clock on the camera can be used to question the footage. If the camera’s clock is off, note the difference (for example “camera shows 08:12, real time 09:12”) and explain it to the insurer. Set the clock correctly for next time.
3. Keep the original, make copies
Copy the original file, unchanged, to a computer and a backup the same day. Don’t edit, trim or add music to the original. If you need a short clip for a report, make it from a copy. Keep the memory card safe until the claim is settled.
Chameleon AI can import a clip into an incident: the file gets a SHA-256 fingerprint and is encrypted on your device, so you can later show it wasn’t changed. See /blog/digital-evidence-fingerprint-sha256-explained/.
4. Who to give it to
Tell your insurer you have footage and send it with your claim (see /blog/how-to-file-a-car-insurance-claim/). If the police are involved, offer it to them; it may also identify a driver in a hit-and-run (see /blog/hit-and-run-what-to-do/). Other drivers’ dashcams count too: ask witnesses at the scene whether they have one.
5. Privacy and the law
Using a dashcam is legal in many countries, restricted in some, and the rules on publishing footage are stricter still: faces and number plates can be personal data. Sharing a clip with your insurer or the police is generally fine; posting it online to shame a driver can expose you to legal trouble. Check the local rules before installing a camera, and see /blog/is-it-legal-to-film-an-incident/.
No dashcam? Use your phone
If you didn’t have a dashcam, photos and a short video of the scene taken right after the accident are the next best thing. Our checklist /blog/how-to-photograph-a-car-accident-scene/ lists what to capture.
Frequently asked questions
Can dashcam footage be used against me?
Yes, footage shows everything, including your own speed or mistakes. Insurers and courts may ask for it. That’s a reason to drive carefully, not to hide evidence.
Is a parking-mode recording useful?
Very. It can show who hit or vandalised your parked car. Save it as soon as you notice the damage.
Should I post the video on social media?
Avoid it. Publishing can break privacy laws and harm your claim. Give it to your insurer and the police instead.
General information to help you get organised, not legal advice. Procedures and numbers can change: confirm them with the office concerned, and in danger call your local emergency number first.
