CCTV Video Evidence & Custody Affidavit Draft

What a good one includes

• Detailed hardware and software information, including the camera's make, model, physical location, and the recording software version used to capture the footage.
• Documentation proving how the system's internal clock is calibrated, such as synchronization with a specific Network Time Protocol (NTP) server, to verify the exact time of the event.
• A chronological log detailing exactly who accessed, exported, transferred, and stored the video file from the moment of recording to its delivery.
• The original file format details along with cryptographic hash values, like MD5 or SHA-256, generated immediately upon export to prove the video has not been edited.
• A clear statement of the technician's qualifications, job role, and firsthand knowledge of the surveillance system's maintenance and operation.
• Information regarding the standard overwriting cycle and storage media of the DVR or NVR to show the footage was preserved in the normal course of business.

Common mistakes to avoid

• Failing to note or explain time drift between the security camera system's internal clock and the actual real-world time of the incident.
• Omitting the specific cryptographic hash values, which makes it incredibly easy for opposing counsel to argue the digital file was altered.
• Allowing multiple unnamed staff members to handle the exported file without documenting their names and roles in the chain of custody.
• Using subjective descriptions of what the video portrays instead of strictly documenting the technical facts of how the footage was captured and preserved.

Frequently asked questions