Condominium CCTV Not Recording: How to Find Out Why.

REFERENCEIN-13
TERRITORYA FAILING SYSTEM
ISSUED
EXTENT1,354 WORDS
READING6 MIN
DRAWN BYOCCHIO TEC SDN BHD

QUESTION ANSWEREDCondominium CCTV has not recorded, or the footage needed is missing: what should be preserved first, and where does the fault usually sit?

IN SHORT

When a condominium’s CCTV has not recorded, preserve before you diagnose. Note the cameras and the time window needed, export whatever survives in its native format, and let nobody initialise a disk until that is done. Then read the pattern of the gap (one camera, every camera, one period, or footage that cannot be used), because each points to a different part of the system.

A wall camera wired to a recorder rack, above a recording timeline with one short run missing.
The gap in the recordR-01
KEY TAKEAWAYSR-02
  • 01A recorder running continuously overwrites video after a set period (UK Home Office), so export firstPRESERVE
  • 02Initialising a recorder’s disk removes all the data saved on it, in Hikvision’s manualORDER
  • 03A picture on the live monitor proves nothing about the recordingCHECK
  • 04Exported operation, alarm and exception logs show what the recorder reportedASK
  • 05Under Malaysia’s Evidence Act 1950, a visual recording is a documentEVIDENCE
§01

What should the committee do before anyone diagnoses anything?

A Joint Management Body (JMB) or Management Corporation (MC) should first secure surviving footage. A digital recorder running continuously “can only retain video on the system for a set period before it is overwritten”, says the UK Home Office’s 2009 CCTV Operational Requirements Manual, so each day spent on diagnosis can cost footage.

  1. Note what is needed: which cameras, which date, and a window well before and after the incident.
  2. Protect the files. Some recorders can lock recorded files against overwriting, as one Hikvision manual describes.
  3. Export in the native format, “without converting between formats” (Home Office manual), with the original metadata. A phone video of the monitor is not an export.
  4. Let nobody initialise or replace a disk first. Initialisation removes all the data on the disk, yet that manual advises it for a disk reported as Abnormal.
  5. Record who touched the recorder. The Singapore Police Force’s building standard, not Malaysian law, recommends an audit trail of access to recorders, including file retrieval.

The wider method is in When a Building’s Security System Starts Failing.

§02

What does the pattern of missing CCTV footage point to?

The pattern of missing CCTV footage points to the failed part: one camera to that camera or its cabling, all cameras to the recorder or its disks, event clips only to the recording mode, and nothing older than a few days to overwriting or an expiry setting.

PATTERN OF THE GAPR-03
PatternLook first atWhat to check on the recorder
One camera onlyThat camera, its cable, power or channelA video loss alarm, if enabled
Every camera, same hoursThe NVR or DVR (the head end), its disks or powerHDD Error or Record Exception
Several cameras on one switchThe network; camera SD cards may hold copiesNetwork Disconnected
Only clips around eventsMotion or alarm recording modeThe schedule and pre-record setting
Nothing older than a few daysOverwriting, or an expiry settingExpiry time; earliest playable date
Footage there, time wrongThe recorder clockThe time source (NTP or GPS)

A network gap may be recoverable where edge storage was set up: the Singapore standard notes most modern IP cameras can record to onboard SD cards, and says the recorder “should be configured to automatically retrieve the loss of recording once the network has recovered”. And retention is a setting as much as a disk size: a Hikvision recorder deletes a file once its set expiry time is reached. How long to keep belongs in the scope of works for a CCTV tender. An intercom fault is read the same way.

§03

Why can the guardhouse monitor show live CCTV when nothing was recorded?

The guardhouse monitor can show live CCTV with nothing recorded because live view and recording are separate jobs: the recorder can stop writing while the picture continues. The UK Home Office manual warns there “could be a substantial difference” between recorded and live quality.

Disks fail at a measured rate: Backblaze reported an annualised failure rate of 1.36% across 344,196 data-centre hard drives in 2025. The answer is detection. One Hikvision recorder manual lists an HDD Error exception for a disk writing error or an unformatted disk, and describes S.M.A.R.T. and bad sector detection and exportable logs of operations, alarms and exceptions. An alert helps only if somebody receives it.

§04

Will the footage hold up with the police or in court?

Under section 3 of Malaysia’s Evidence Act 1950, a visual recording is a document, and so is a matter produced by a computer. Whether footage holds up is for the police and courts, but the building controls two things: whether the recording is accurate, and whether someone can speak for the machine that made it.

Section 90A(2) lets a computer’s production of a document in its ordinary use be proved by a certificate signed by a person responsible for managing its operation or the activities it was used for, and section 90A(4) then presumes the computer was in good working order. A certificate is one route, not the only one, and whether a recorder counts as a computer is for a court. Either way, someone in the building should know how the recorder is run and hold its administrator access. If those accounts left with the developer’s contractor, see what a JMB inherits at developer handover, including who releases recordings.

Accuracy starts with the clock. The Home Office manual says time and date are recorded “firstly to add evidential weight to the pictures”, and that the clock should not “slowly drift from the true value”. Section 90B lets a court weigh a document’s accuracy. A recorder can take its time from an NTP server; the Singapore standard recommends time synchronised to GPS.

§05

What should a CCTV diagnostic attendance put in writing?

A CCTV diagnostic attendance should put in writing the cameras and period affected, the logs and disk status, any footage recovered, the clock error and who receives alerts, because the committee may have to explain the gap to owners, a resident or the police.

WHAT THE ATTENDANCE SHOULD RECORDR-04
  • N01Cameras and period affected, confirmed by playbackSTATED
  • N02Operation and exception logs for the periodATTACHED
  • N03Each disk’s status, and anything initialised or replacedRECORDED
  • N04Footage recovered, from the recorder or a camera cardSTATED
  • N05Recorder clock error against a referenceMEASURED
  • N06Alerts configured, and who receives themIDENTIFIED
§06

How does a building find out before the next incident?

By testing the recording on a schedule. The Singapore standard lists regular audits of storage duration, alarms and recorded image quality, and the UK Home Office manual recommends exporting sample video from each camera at commissioning as a reference. A simple routine: play back an old date on every camera and check the clock.

For contract wording, see what a security maintenance contract must cover; for replacement, how long a building’s CCTV, access control and intercom last.

Occhio Tec is an Extra Low Voltage contractor established in 2010. It designs, installs and maintains CCTV, access control, video intercom and structured networking, has worked in high-end condominiums in Kuala Lumpur’s Mont Kiara, Bangsar and KLCC for service and maintenance, and takes over systems another contractor installed. Message WhatsApp +60 11-6494 4931, or request a site survey.

F-A

Questions committees ask about missing footage

Q-01Does a live picture on the monitor mean the CCTV is recording?

No. Live view and recording are separate jobs: a camera can feed the guardhouse monitor while the recorder has stopped writing, and the UK Home Office manual warns that recorded quality can differ substantially from live. Only playback proves the footage exists.

Q-02Should a contractor initialise or replace the recorder’s disk straight away?

Not before anything recoverable is exported. In Hikvision’s recorder manual, initialising a disk removes all the data saved on it, yet it is the manual’s advice for a disk reported as Abnormal. Export first, then let the disk be dealt with.