The theft happened overnight. By morning, the security lead has found it on camera: a pickup at the fence, two people, a pallet of copper coil. Then the hard part starts. Police want a copy. The insurer wants a copy. Legal wants to know if it will hold up.

Too often, what gets handed over is a phone video of the monitor, a low-resolution clip with the time stamp cut off, or a file that only plays in software nobody else has. Weeks later, the footage that should have made the case is questioned or set aside.

For large industrial sites, exporting CCTV evidence properly is as important as capturing it.

Why Does Chain of Custody Matter?

Courts need to know that video shows what it claims to show. The Canadian Bar Association notes that if the chain of custody of video evidence is not proven, for example because of inadequate documentation, the evidence can be thrown out, according to its PracticeLink article on video evidence.

The same article says the party offering video must be able to show how it was recorded, whether exporting affected its reliability and whether all relevant video was obtained. It lists questions any defensible procedure must answer, including who captured the image and when, who had access to it, and whether the original has been altered.

Insurers and adjusters ask similar questions when a large claim depends on footage. A clean, well-documented export can speed up a claim, while a weak one invites delay and dispute.

What Goes Wrong With Most Exports?

Common mistakes include:

• Recording the screen with a phone. It loses resolution, timestamps and metadata.

• Exporting only a few seconds. Investigators often need the approach, the event and the departure, plus other camera angles.

• Converting or editing the original. Trimming or compressing can raise questions about alteration.

• Wrong clock settings. If the recorder’s time is off, the footage may not match alarm logs or witness accounts.

• No record of who exported it. Without documentation, it is hard to prove the copy is genuine.

• Footage overwritten. Waiting too long means the original is gone.

How Should Industrial Sites Export CCTV Evidence?

A clear procedure for exporting CCTV evidence makes footage far more useful.

1. Preserve first. As soon as an incident is known, lock or protect the relevant footage on the recorder so it cannot be overwritten. Many systems offer a “protect” or “bookmark” function.

2. Export native files. Export in the system’s native format, with its player and any built-in verification such as digital signatures or watermarks. Also export a common format like MP4 for convenience, but keep the native version.

3. Export generously. Include time before and after the event, and all relevant cameras: gate, perimeter, yard and building.

4. Check the time. Note any difference between the recorder’s clock and actual time.

5. Document everything. Record who exported the footage, when, from which recorder and cameras, the time range and where copies went. A file hash adds an extra integrity check.

6. Keep a master copy. Store an untouched copy securely and give working copies to police, insurers or legal.

7. Use official channels. Many Ontario police services now use secure online portals. Brantford Police, for example, says original files submitted through its system are never altered, even when shorter segments are created, and that businesses should not delete files they have shared, according to its digital evidence FAQ.

How Does System Design Help?

A good export starts with a good system. Look for:

• Recorders and video management software with native export, a built-in player and watermarking.

• Synchronized time across all cameras and recorders, ideally from a network time server.

• User accounts with audit logs, so every view and export is recorded.

• Enough resolution at gates and perimeters to identify people and vehicles.

• Retention long enough to cover delayed discovery.

On a 64-camera or larger site, a central video management platform makes multi-camera exports quick and consistent.

Who Should Be Trained to Export?

Limit exports to a few trained people, such as security leads, the site manager and an IT contact. Give them a one-page procedure and a simple export log. Practise once a year with a mock incident so the process is familiar when it matters.

ForceVision helps industrial sites across Southern Ontario set up camera systems and evidence procedures that stand up to scrutiny from police, insurers and courts. If you would like a review of your export process, we are glad to help.

The Takeaway

Pick a random event from last week and ask your team to export it as if police had requested it. Time how long it takes and check what is missing. That one test will tell you whether your approach to exporting CCTV evidence is ready for a real loss.

FAQ

Q: Is a phone video of the monitor acceptable evidence?
A: It is a poor substitute. It loses resolution, metadata and integrity checks. Export native files from the recorder instead.

Q: Should we export in MP4 or the native format?
A: Both. Keep the native version with its player and verification features, and provide MP4 for convenience.

Q: Can we delete footage after giving it to police?
A: No. Keep a secure master copy, since it may be needed in court.

Q: Who should be allowed to export footage?
A: A small group of trained people, with every export logged.