How the estimate works
The calculator applies a practical bitrate estimate based on megapixel count, number of cameras, recording hours and a recording profile. It is intended for early planning—not a guarantee.
What changes real storage consumption
- H.264, H.265 and manufacturer smart-codec behavior
- Constant or variable bitrate
- Frames per second
- Scene movement and lighting noise
- Audio recording
- Continuous, event or scheduled recording
- HDD formatting and reserved capacity
Recommended planning method
- Set a minimum retention target.
- Choose the exact camera and expected bitrate.
- Calculate with a safety margin.
- Confirm recorder HDD limits and compatible surveillance drives.
- Test playback and overwrite settings after installation.