In this guide
Most people fit a dash cam hoping never to need the footage. If something does happen and you want to report it, the process is more straightforward than people expect, but a few things decide whether your clip is usable. Here is what we tell customers.
Where the footage goes
Most UK forces take dash cam submissions through an online portal, often branded Operation Snap. You upload the clip, write a short statement about what happened, and the force decides whether to act. Forces run their own portals and their own rules, so search for your force name plus dash cam submission, or go to the force website directly. Nottinghamshire, Derbyshire and Leicestershire all accept online submissions.
Two things to know before you start. Many forces ask for footage within a set window after the incident, sometimes as little as seven days, so do not sit on it. And submitting footage can make you a witness, which may mean giving a statement and, occasionally, attending court.
Protect the clip first
This is where most footage is lost. A dash cam records in a loop and overwrites the oldest file when the card fills, so if you do nothing the clip you need disappears within hours or days depending on card size.
As soon as something happens, lock the file. VIOFO cameras have a button on the body for it, and a sharp impact usually locks the clip automatically. When you get home, take the card out and copy the file to a computer as well. Locking protects it from the loop; copying protects it from the card.
What makes footage usable
- A readable number plate. The one thing that decides whether a report goes anywhere. Resolution matters, but so does frame rate: a plate on a car passing the other way can smear at 30fps and stay sharp at 60fps.
- Context either side. Send the whole clip, not a trimmed three seconds. What led up to the incident matters as much as the moment itself.
- Date, time and location. Cameras with GPS stamp this automatically, which is far stronger than relying on memory.
- The original file. Do not edit it, re-encode it or film your screen with a phone. Submit it exactly as it came off the card.
What gets footage rejected
Almost always one of four things: the plate cannot be read, the clip has been trimmed so tightly that context is lost, it was submitted after the force’s deadline, or the file has been edited and can no longer be treated as original. The first is a hardware problem. The other three are avoidable.
If your footage keeps falling short
If you have tried to report something and the plate was not legible, the camera is the limit rather than the process. Resolution helps at distance, frame rate helps with movement, and a telephoto lens helps with both. The A329S records 4K at 60fps, which is the combination that holds a plate on a car passing the other way. The telephoto models go further, using a 4x zoom to read plates well down the road.
Whatever camera you run, use a high-endurance memory card. Ordinary cards fail under constant rewriting, usually without any warning, and a camera that was not recording is the worst way to find out.
Getting set up properly
We supply and fit the full VIOFO range at our Beeston workshop as an authorised VIOFO installer, from £60 for a single-channel camera, vehicle dependent and confirmed before you book. See VIOFO dash cams fitted in Nottingham, or browse the full range with our buying guide. If you want the camera recording while you are parked as well, our guide to parking mode explains the options.
