Calculator
Example Data Table
| Use Case | Resolution | Bitrate | FPS | Retention | Typical Planning Note |
|---|---|---|---|---|---|
| Home security | 1920 × 1080 | 4 Mbps | 15 | 14 days | Motion recording can reduce storage sharply. |
| Business CCTV | 2560 × 1440 | 8 Mbps | 25 | 30 days | Allow extra space for indexes and backups. |
| Production archive | 3840 × 2160 | 60 Mbps | 30 | 90 days | Use multiple copies for safer long-term retention. |
Formula Used
The calculator first adjusts the video bitrate with the selected codec multiplier. It then adds audio bitrate and multiplies by cameras, recording activity, daily hours, and retention days. Extra overhead, RAID allowance, and backup copies are applied after the base retained storage is found.
Adjusted video Mbps = video Mbps × codec multiplier. Total Mbps per camera = adjusted video Mbps + audio Mbps. Daily bytes = Mbps × 1,000,000 × seconds ÷ 8. Final storage = base storage × overhead factor × RAID factor × backup copies.
How To Use This Calculator
Enter the frame size, frame rate, video bitrate, and audio bitrate. Choose a codec multiplier that matches your compression method. Add the number of cameras or video streams. Then enter daily recording hours, retention days, overhead, RAID allowance, and backup copies. Press the calculate button to view storage totals, bandwidth, frame statistics, and chart values.
Video Data Storage Planning Guide
Why Storage Estimates Matter
Video files grow quickly because every second contains many frames. Each frame stores visual detail, motion, and compression data. A storage plan helps teams avoid missing footage, failed exports, and full drives. It also supports better budgeting. The same project can need very different capacity when bitrate, codec, retention, and camera count change.
Key Statistical Inputs
A useful estimate begins with average bitrate. Bitrate describes how many data bits are written each second. It acts like a statistical mean for the stream. Real video may rise and fall around that value. Fast motion, noise, rain, and complex scenes can push usage higher. Static scenes usually need less space. That is why overhead and backup factors are important.
Codec And Compression Effects
Codecs reduce file size by removing repeated information. Efficient codecs can lower storage needs, but they may require stronger devices. Production codecs can increase storage because they preserve more editing detail. This calculator uses a codec multiplier so you can compare common planning cases without changing every input.
Retention And Daily Growth
Retention days often control the final answer. A system recording for thirty days needs about twice the base capacity of a fifteen day system. Daily storage also helps with monitoring. If actual daily growth is higher than the estimate, bitrate or motion levels may be greater than expected.
Using Results Carefully
The final result includes file overhead, parity allowance, and backup copies. These values make the estimate more realistic. Still, leave free space for snapshots, database files, thumbnails, and future camera upgrades. For critical systems, compare calculated totals with real test recordings before buying drives.
FAQs
What does video bitrate mean?
Video bitrate is the amount of video data written each second. Higher bitrate usually gives better quality, but it also increases storage needs.
Why does frame rate affect storage?
Higher frame rates store more frames each second. If bitrate also rises, the final storage requirement increases.
What is a codec multiplier?
A codec multiplier adjusts storage for compression efficiency. Lower values estimate stronger compression. Higher values estimate larger production or intraframe files.
Should audio bitrate be included?
Yes. Audio is usually smaller than video, but it still adds data. Long retention periods can make that addition meaningful.
What does active recording ratio mean?
It is the percentage of time that recording is active. Motion-based systems may record less than continuous systems.
Why add overhead?
Storage systems use space for indexes, file tables, thumbnails, metadata, and management data. Overhead helps make the estimate safer.
What is RAID overhead?
RAID overhead represents parity or redundancy space. It helps estimate usable capacity after protection requirements are included.
Can this calculator estimate many cameras?
Yes. Enter the total camera or stream count. The calculator multiplies bitrate and daily storage across all streams.