Advantages of the Nakavision H.265AI compression
The Nakavision C1's H.265AI compression reduces storage and bandwidth requirements by 50–70% compared to standard H.264
On the Nakavision C1 camera, H.265AI (hardware-based intelligent compression, also known as H.265X / H.265+) uses an average of 50–70% less storage and network bandwidth compared to earlier standard H.264 encoding. In static environments, such as at night or in rarely visited locations, savings can reach up to 75–80%.
What makes "AI" encoding save so much more?
| Compression Level | How Savings Are Achieved |
| Basic H.265 vs. H.264 encoding | Employs larger, more dynamic coding tree units (CTU) and advanced motion estimation, which alone provides an approximate 40–50% reduction in size at the same visual sharpness. |
| H.265AI optimization | Background modeling and ROI (Region of Interest): The processor separates static backgrounds (walls, asphalt, furniture) from actual targets (people, vehicles). Static areas are refreshed far less frequently and compressed more aggressively. |
| Dynamic GOP (I-frame control) | When nothing is happening, it extends the interval between full keyframes (I-frames) and lowers the bitrate (down to a few hundred kbps). When motion is detected, it immediately inserts a new keyframe and ramps up the bitrate for maximum detail. |
| Nighttime AI noise reduction | In low-light conditions, digital image noise is not encoded as motion, preventing sensor noise from unnecessarily consuming storage. |
Practical storage requirements on the Nakavision C1 (at 3MP resolution)
For continuous (24/7) recording, actual storage requirements vary depending on motion frequency:
| Encoding Format | Average Bitrate | Daily Storage Requirement (24 hours) | 128 GB MicroSD Capacity |
| H.264 | ~3–4 Mbps | 30 – 42 GB / day | ~3 – 4 days |
| Standard H.265 | ~1.5–2 Mbps | 16 – 22 GB / day | ~6 – 8 days |
| H.265AI (Nakavision C1) | ~0.8–1.2 Mbps | 8 – 14 GB / day | 9 – 14 days* |
*(If not set to continuous recording, but only to motion and human detection, a 128 GB card can retain footage history for weeks, or even 1–2 months. Nonetheless, continuous recording is recommended; if the SD card's retention capacity is insufficient, record over the local network to a PC, NVR, or NAS as well.)
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