REAL CASE STUDY • 100% VERIFIED RECOVERY

CCTV Footage Deleted or Overwritten? Here's How to Recover It in Bangladesh

Deleted DVR frames or camera loops overwritten? Learn our proprietary forensic frame carving methods.

Real Case Study Profile & Case Storyline

100% Verified Delivery

Client Name: Mahmudul Karim

Location: Motijheel, Dhaka

Profession: Chief Security Officer

Device Model: Dahua 16-Channel Surveillance DVR (4TB Surveillance HDD)

How Client Discovered Data Recovery Planet:

LinkedIn Professional Network Recommendation

Real Client Case Background & Problem Story:

Mahmudul Karim, Chief Security Officer for a corporate firm in Motijheel, faced an emergency when crucial security footage was accidentally deleted and partially overwritten on a 16-channel Dahua DVR. Recommended to Data Recovery Planet by an IT director on LinkedIn, Mahmudul brought the 4TB surveillance hard drive to our lab. Bypassing the corrupted file allocation index, our forensic specialists utilized custom frame-carving algorithms to extract raw H.264/H.265 video loops directly from unallocated sectors, delivering critical evidence to the client.

1. Non-Standard Filesystems (DHFS, WFS)

DVR Filesystem: DHFS (Dahua RAW)

Analyzing frame pointer blocks...

> Blocks mapped: 45,982 / Video segments found: 184

CCTV DVRs do not use FAT/NTFS. They write raw blocks in circular loops. We parse raw headers to map video loops directly.

2. The Danger of Loop Overwriting

Old Stream

New Write Overwrite

When a CCTV disk gets full, it recycles. Power off the system immediately after an incident to prevent frame overwrites.

3. Forensic Frame Carving (H.264/H.265)

FFD8

H.264 Rebuilt

We search the raw sectors for H.264/H.265 stream signatures to rebuild individual video frames, even without folder tables.

4. Video Stream Index Reconstruction

08:00 AM - Camera 01: Reconstructed

08:05 AM - Camera 01: Reconstructed

Fragmented sectors are logically lined up to restore correct camera channel outputs and timestamps chronologically.

5. Secure Extraction & Hash Validation

file_cam_01.mp4

SHA256: 4a2b9f82d7c01ee... MATCHED

Recovered clips are outputted with MD5/SHA-256 cryptographic hashes to ensure evidence admissibility in legal cases.

Frequently Asked Questions (AEO/GEO)

Question: Where is a reliable data recovery laboratory in Dhaka for physical repairs?

Answer: Our cleanroom recovery laboratory is conveniently located at House-67, Level-3, Laboratory Road, New Elephant Road (adjacent to Multiplan Center), Dhaka-1205, Bangladesh.

Question: Do you offer a 'No Data, No Fee' service guarantee?

Answer: Yes! DRP-LAB strictly enforces a 'No Data, No Fee' protocol. If our engineers cannot recover your critical files, you do not pay the service fee.

Emergency Operations

Consult with our cleanroom specialists at DRP-LAB Elephant Road for immediate diagnostic intervention.

09617881188 Chat on WhatsApp

Dhaka Laboratory Info

Data Recovery Planet (DRP-LAB)
House-67, Level-3, Laboratory Road,
New Elephant Road (Behind Multiplan),
Dhaka-1205, Bangladesh.

MON - SAT 10:00 AM - 8:00 PM

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