How Long Does CCTV Footage Last
How Long Does CCTV Footage Last?
One of the most common questions people ask is “How long does CCTV footage last?” The answer depends on several factors such as storage capacity, number of cameras, video quality, and recording settings. Understanding this helps you choose the right CCTV system for your home or business.
Factors That Affect CCTV Footage Duration
1. Storage Capacity
The size of the storage device plays a major role.
- 500GB, 1TB, 2TB, 4TB, or higher HDD
- Larger storage means longer footage retention
2. Number of Cameras
More cameras record more data.
- 1–2 cameras: Footage lasts longer
- 8–16 cameras: Footage overwrites faster
3. Camera Resolution
Higher resolution uses more storage.
- 2MP (Full HD): Moderate storage use
- 4MP / 5MP: Higher clarity, more storage
- 8MP (4K): Best quality, fastest storage usage
4. Recording Mode
- 24/7 Continuous Recording: Uses maximum storage
- Motion Detection Recording: Saves space by recording only when movement is detected
Average CCTV Footage Retention Time
| Storage Size | Cameras | Resolution | Approx. Duration |
|---|---|---|---|
| 500GB | 2 Cameras | 2MP | 7–10 Days |
| 1TB | 4 Cameras | 2MP | 10–15 Days |
| 2TB | 4 Cameras | 4MP | 15–20 Days |
| 4TB | 8 Cameras | 2MP |
Recent Comments