Security Camera SD Card Recovery: Recovering CCTV Footage After Corruption or Overwrite
Wi-Fi cameras, doorbell cams, and standalone CCTV units record to microSD cards that endure brutal 24/7 loop-recording. When footage corrupts or disappears, the clips (MP4, AVI, H.265) are often recoverable — but loop-recording actively overwrites the event every minute the camera stays on. This guide explains the loop-recording problem, why camera cards corrupt so often, computer-side recovery, and when to check the camera's cloud event history instead.
Key Topics Covered
The loop-recording overwrite problem
Powering off the camera and pulling the card immediately
Why surveillance cards corrupt (write exhaustion, power loss)
Carving MP4/AVI/H.265 video segments on a computer