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EDR / Evidence & investigations / CCTV & DVR footage recovery

Investigations & evidence · CCTV and DVR footage

CCTV and DVR recovery, Exeter. The recorder is still looping; turn it off and the odds change.

A DVR never stops to think about what it filmed. Old video gets recorded over on a rolling loop, day and night, and the clip you need is next in the queue. Kill the power to the recorder and that loop stops dead — everything after that we can sort out on the bench.

No data back means no fee Treated as evidence Act fast — the loop overwrites

A quiet word, in confidence
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Recorders on this bench most weeks.

Hikvision and HiLookThe most common recorders in the UK by a distance. Where their index survives, clips come back already carrying channel numbers and timestamps.
DahuaThe other giant of the market, with its own way of laying out metadata. We read what remains of it, and carve the footage where nothing does.
Swann · Reolink · Annke · UniviewBudget and small-business systems under many badges — inside, the boards and disk formats repeat, so disk-level recovery works across the lot.
Unbranded recordersGeneric units fitted years ago by firms nobody can now reach. No documentation, no support line — yet the same physics governs the video on that disk as governs everything else.

The faults that reach us.

Not sure? Ring us →
What's wrongWhat it usually meansStep one
Clips wiped through the recorder's own menuThat removes index entries, not the footage itselfCut the power straight away
The disk got formatted — accident or otherwiseA blank index on top; the streams survive beneathWe carve the frames back out
The recorder itself is deadIt's the drive inside that holds the footage, not the boxWe pull the drive and image it
The incident is weeks oldThe loop may have got there first — we'll tell you honestlyThe free diagnosis gives the answer
Playback works; the USB export won'tA proprietary format and a flaky export toolWe image the disk and export it properly
The footage has to satisfy police or an insurerPlayable MP4s, the native files, and a written noteSee the insurance & police page
Posting it to us: kit and media reach our intake lab by tracked, insured post, with the return postage on us — or ring first and we settle the safest route for the job together. There's more on the contact page.

The job, stage by stage.

See the casebook →
01

Booked in, assessed for nothing Free

Your device is logged under its own case number the day it arrives. An engineer finds the fault, tells you plainly what stands a real chance of coming back, and writes you one fixed quote. Nothing is charged for that look, nothing obliges you, and paid work starts only when you say so.

The look is freeA single quote, in writingNo obligation
02

Stop the loop

Before anything else, our advice is the same every time: pull the recorder's power, or lift the drive out of it. Every hour it keeps running, more of the video you care about goes under new recording.

Recorder shut offLoop halted
03

Image the drive

The drive comes out and is copied read-only here. From that point the DVR itself is irrelevant — a dead unit is no obstacle — and all further work happens on the copy.

Drive imaged read-onlyWorks even on a dead unit
04

Read the index — or go frame by frame

If the recorder's own catalogue survives, we use it to bring clips back with channel numbers and times attached. If it has gone, we search the disk for H.264/H.265 video directly and rebuild files that play.

Index read where it survivesFrame carving otherwise
05

Watched back, verified, returned

Before any fee falls due you see a full listing of everything recovered and approve it. Your files travel back on brand-new media, return postage on us, and the case stays open until you've confirmed everything opens on your own machine.

You approve the file listReturned on new mediaWe pay return postage

Rules the bench works by

  • DVR disks don't speak Windows — Hikvision, Dahua and the rest each lay down their own on-disk structures, and that is why a consumer undelete tool shows you an empty drive.
  • The index decides the labels — with it, recovered clips carry their channel and clock data; without it, carving still saves the pictures, minus that labelling.
  • Overwriting is blind — the system always eats its oldest recording next, no matter what that recording happens to show.
  • Don't trust the retention figure on the box — a '30-day' system carrying too many cameras at high quality can wrap inside seven days.

On the '30 days' everyone quotes: no UK statute sets a CCTV retention period. The 31-day habit grew out of data-protection law's storage-limitation principle; in practice, systems often loop a good deal sooner than their settings promise. Once something has happened, treat the clock as already running.

Fresh from the casebook.

EX · EDR-2026-2546VERIFIED ✓

An Exeter shop burgled, with the DVR still running

The recorder had looped for nine days before the insurer came asking for the footage. The disk was imaged, its index decoded, and the incident window lifted from sectors the overwrite hadn't yet reached — two exports made: one for viewing, one for the claim.

What happened window recovered3 days in the lab

Before it leaves your hands.

Do

  • Kill the power, or take the drive out
  • Note the date, the rough time, and the cameras involved
  • Send us the drive — or the whole recorder if you'd rather not open it
  • Say where the footage is headed: your own use, a claim, or the police

Steer clear

  • Leave it recording in the hope of catching something else
  • Delete older footage to make space
  • Let an installer reset the unit or flash new firmware
  • Rely on a USB export that's already failing

Asked in private, answered plainly.

Can deleted CCTV footage be brought back?

More often than not, yes — so long as the recorder was powered down before the loop wrapped round. A delete only wipes the index; the video itself sits there until new footage records over the top.

Can CCTV that's been overwritten be recovered?

No. When new video has been recorded across the old, nothing any lab does will bring it back — which is exactly why powering the recorder off matters more than anything else.

My DVR is dead — is the footage lost with it?

Hardly ever. Everything recorded lives on the disk inside; we remove that disk, take an image and do all work on the copy. The box itself is just packaging for the drive.

How long have I got?

It depends on the size of the disk, the camera count and the recording quality — on a busy system the loop can come round in days. While the recorder stays powered, every footage job counts as urgent.

Evidence fades fast. Don't hang about.

Recorders overwrite on a loop, evidence weakens, time limits pass. Open a case early — the first look is free and confidential.

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