Field-tested guides on recovering deleted footage, reading the proprietary filesystems DVRs use and handling video evidence so it holds up. Written by the team that builds the software.
A deleted clip becomes free space, not wiped data. What that buys you, how many days you realistically get and the moves that decide whether the video comes back.
Read the guideYour no-name DVR is probably a Xiongmai. Why the drive reads as blank on a PC, and the safe read-only way to get deleted footage back as playable video.
Locked out of an XMEye recorder? The default login, the key code and QR reset routes, and the one step that clears your settings.
Your XMEye or Xiongmai DVR shows No HDD. What causes it, how to fix a drive that is not detected and how to save the footage before a format wipes it.
XMEye clips save as raw .264 and will not open in a normal player. How to play them on a PC with the DVR player, VLC or by converting to MP4.
XVR means a hybrid recorder that takes both coax analog HD and IP cameras. What it stands for, how it differs from a DVR and an NVR and what it means for recovery.
No brand on the box? Most no-name, generic and Chinese DVRs run on a few OEM boards. How to spot yours, get past the login and recover the footage.
CP Plus recorders write video in their own format, so a PC sees an empty disk. Why that happens, what not to do and the read-only steps that bring the recordings back.
Every official CP Plus reset route, from security questions and the email code to the master password and reset button, plus how to get the footage without the login.
Why a CP Plus DVR says no HDD, the Disk Manager checks, the fix order from power adapter to SATA leads and how to save the recordings first.
The DAV export needs the CP Plus Orange SmartPlayer. Where to get it, how to back up as MP4 instead and what to do when the recorder has already overwritten the clip.
Moved a hard drive into a replacement DVR and the recordings vanished, or it wants to format the disk? Why it happens, what not to click and how to get the footage back.
Stop the DVR overwriting the clip, export it the right way with a hash and a handling note, the Section 63 certificate courts expect and how to recover a clip that is gone.
HiLook and HiWatch are Hikvision sub-brands with the same drive layout. Read the disk on a PC, recover deleted clips and get past a lost password.
Many Annke recorders are Hikvision-made. How to read the Annke drive on a Windows PC, recover deleted recordings and work around a lost password or no HDD warning.
Prama recorders run Hikvision firmware under an Indian joint-venture badge. Read the drive on a PC, recover deleted footage and keep it usable as evidence.
Epcom TurboHD, EV and XR recorders are Hikvision-made and sold through Syscom. Read the disk on a PC, recover deleted video and reset a forgotten password via SADP.
Intelbras MHDX, NVD and VD recorders use the Dahua format. Read the HD on a Windows PC, recover deleted recordings and deal with a lost senha or an HD not recognised.
What the format prompt means on Hikvision, Swann, Reolink and Dahua units, what a format really erases and how to save the footage before you let the recorder start again.
Four causes behind a No HDD warning on any brand, in the order worth testing, plus the vendor wording and how to read the drive on a PC when the recorder will not.
A DVR format empties the index and leaves the video blocks. What survives, which kind of format happened and how the recordings are rebuilt on a Windows PC.
The recorder will not power on or shows no picture. How to tell what failed, why a replacement recorder is the wrong first move and how to read the drive on a PC.
What TestDisk, PhotoRec, Recuva and Disk Drill do on a DVR drive, what DVR-specific tools cost where the price is public, what labs charge and the free step that works.
Night Owl offers no recovery route and may void the warranty for an opened case. The .stream files are still on the drive, and a PC can read them.
Reolink says deleted video stays on the drive until overwritten. What is on a Reolink NVR drive, what HDD not formatted and HDD not detected mean and how to export the clips.
Samsung SRD recorders rename deleted .SSF files rather than erase them, and Hanwha no longer supports them. How to read the drive, open SEC backups and get the footage back.
Honeywell recorders sit on Hikvision, Dahua or Honeywell's own 35 Series layout. What the DFRWS 2026 study found about deletion and how to read the drive on a PC.
One manufacturer behind Swann, Lorex, KGuard, Defender, Q-See and a dozen other badges from the 2010s. How to spot a Raysharp unit and recover footage from its hidden drive layout.
Provision-ISR, Novus, Satvision, JFL and 70 other brands are TVT inside. How to recognise one, what its drive holds and how deleted footage comes off it.
Uniview publishes no recovery route and the NVR has no undelete. How to read the drive on a PC, what Normal and Abnormal mean and how the password routes work.
A degraded RAID 5 NVR still holds its footage. Why the rebuild is where arrays are lost, how to image every member first and how the array is reconstructed.
Pull the disk from a Hikvision recorder, scan it without writing a byte and rebuild the recordings its index no longer shows.
Dahua stores video in its own DHFS filesystem, so the drive looks blank on a PC. Here is the read-only way to rebuild deleted clips, plus why a raw .dav file will not play. Covers Amcrest and Lorex too.
A Lorex recorder that lost clips or flashes No Disk after a power cut is usually still holding the video. What the errors mean and how to read the drive safely.
Swann support says lost recordings are gone for good, yet the drive often disagrees. Decoding No HDD Detected, the red square and the recovery route.
Amcrest showing NO DISK? On these units it is often a power fault, not a dead drive. What to check first, which models it affects and the safe steps to recover your footage.
Once new video is physically written over the old sectors it is gone, for every tool. Here is why, how to tell if it has happened yet and what to do the moment you realise footage matters.
Recovered clips that refuse to open, show black video or read 0 KB usually failed for one fixable reason. The ways DVR exports break and the route to a clean MP4.
A forgotten DVR password locks the menu, not the footage. Reset the password without wiping recordings, or read the hard drive directly to skip the login.
Three working ways back into a Lorex recorder you cannot log into, and a drive-level route to the footage when no reset works.
Forgot your Swann password? Reset it with the MAC recovery code or the Swann Security app without wiping footage. Default Swann passwords and the factory reset explained.
Forgot your Night Owl password? Reset it with the Password Tool secure code or the Night Owl Protect app, no email needed. Default password and factory reset explained.
Most DVRs keep footage for two to four weeks. What sets your own retention window, how to work it out and how to save clips before the loop records over them.
Yes, and it happens by design. Why recorders overwrite old video on a loop, what can wipe a clip sooner than expected and how to protect footage before it is gone.
The standard way to get a clip off your recorder for police, insurers or your own records. The FAT32 rule, MP4 vs original format and how to keep it court-ready.
DVRs and NVRs record video differently, but recovery works the same for both. A clear breakdown of each, with the recovery angle most guides leave out.
Windows calls a DVR disk empty or RAW and offers to format it, while every recording is still sitting there. The reason, and the safe way in.
Often yes, until the DVR records over it. How police and forensic units recover deleted footage, what decides whether it works and how to preserve it as evidence.
We are writing these from real recovery cases. Have a DVR drive that Windows cannot open? Our team can help while you wait for the guide.