- Most dashcams and security systems record in a continuous loop, overwriting the oldest footage once storage fills up.
- Identify every possible camera near the scene — your vehicle, other vehicles, nearby homes, and businesses.
Dashcams, home security systems, and business surveillance cameras have made video evidence far more common in accidents, property disputes, and altercations. The problem is that most of these systems are built to save storage space, not to preserve evidence — they record over old footage automatically, often within days, sometimes sooner.
If you want dashcam footage as evidence in Ontario to actually be there when you need it, saving it has to happen almost immediately after the incident, not after you have decided whether to pursue a claim.
Why Footage Disappears So Quickly
Most dashcams and security systems record in a continuous loop, overwriting the oldest footage once storage fills up. Depending on the device, that cycle can be short. Unless someone actively exports or locks the relevant clip, it can be gone before anyone realizes it might matter — including footage from a system you do not even own.
Common Footage Sources After an Incident
| Source | Who Controls It | Typical Retention Behaviour |
|---|---|---|
| Your own dashcam | You | Usually loops and overwrites automatically; varies widely by device |
| A nearby vehicle's dashcam | A stranger or witness | Same risk — footage may be lost quickly if not asked for |
| A home security camera | You or a neighbour | Cloud plans and local storage both have limited retention windows |
| Business or retail CCTV | The business | Often kept only briefly unless a request is made in writing |
| Municipal or traffic cameras | A public authority | Access and retention practices vary and are outside your control |
Step-by-Step: Saving Footage Before It's Overwritten
- Identify every possible camera near the scene — your vehicle, other vehicles, nearby homes, and businesses.
- Export or download the relevant clip from your own device immediately, rather than waiting for storage to force it to save automatically.
- Ask witnesses with a dashcam for their footage, or at least their contact information, before they leave the scene.
- Contact any nearby business in writing, asking them to preserve footage from a specific date and time before their system cycles it out.
- Save the footage in more than one place — a cloud account and a physical drive — so a lost or damaged device does not take the only copy with it.
- Keep the original file, not just a screen recording of it playing back, since the original file format can matter for authenticity.
If You Don't Have the Footage Yourself
If relevant footage may exist on a system you do not control — a neighbour's camera, a store's CCTV, or a municipal camera — a written request, sent as soon as possible, is far more likely to succeed than a request made weeks or months later, once the system has already recorded over it. In some situations, a lawyer can send a formal preservation request or, if needed, pursue a court process to compel production once a claim is underway.
Why Video Evidence Carries So Much Weight
A clear, unedited video often settles factual disputes that would otherwise come down to one person's word against another's — who had the right of way, how fast a vehicle was travelling, or what actually happened during an altercation. That is precisely why footage is worth chasing down quickly: it can shorten a dispute, strengthen a settlement position, or, in the right case, avoid the need for a trial on contested facts altogether. The flip side is also true — once the footage is gone, that clarity is gone with it, and the dispute reverts to competing recollections.
Frequently asked questions
How quickly should I try to save dashcam or security footage?
As soon as possible — ideally the same day. Many systems overwrite footage automatically within a matter of days, and some considerably sooner, so speed matters more than almost anything else here.
What if the footage belongs to a business that refuses to share it?
A written request that clearly identifies the date, time, and reason for the request is a reasonable first step. If the business still refuses and the footage may be important, a lawyer can advise on further options once a claim is filed.
Is a photo of a paused video frame good enough?
It is better than nothing, but the original video file is much stronger evidence. A still photo can raise authenticity questions that a properly preserved original file avoids.
Can I request footage from a municipal traffic camera?
Sometimes, though access and retention depend on the specific authority involved and are outside your control. Asking early is still the best approach, since public systems tend to have short retention windows as well.
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