eDVR product testing - How does Scene-Adaptive Bitrate Control boost storage efficiency?

Hikvision’s Scene-Adaptive Bitrate Control ensures maximum storage duration in limited storage space. It is superior to the traditional fixed bitrate and variable bitrate encoding methods, saving storage space and ensuring image quality at the same time.

?

Scene-adaptive bitrate control VS traditional encoding methods

Variable bitrate technology: changeable bitrate ensuring a high image quality and an efficient utilization of storage space, but cannot predict how many days of recording can be stored in the limited storage space.

?

Smart coding technology: although capable of calculating how much storage space is required based on the number of recording days, it is flawed by low-efficiency compression, which wastes storage space and compromising high image quality.

?

Scene-Adaptive Bitrate Control used in Hikvision’s eDVRs: employs a higher bitrate in complex scenes to ensure image quality, and uses a lower bitrate in simple scenes to ensure effective use of space. At the same time, the complexity of the scene in a single time period is quantified and recorded for storage pre-allocation.

A real-life example of how scene-adaptive bitrate control works

Let’s take a restaurant as an example, one that has peak hours during lunch and dinner times and is empty and quiet late at night. Here, the eDVR model with storage option for 2 weeks of continual recoding smartly quantifies the video records of a day and pre-allocates the total storage space to about 2 weeks of recording time. Therefore, it provides variable coding in a short time duration and fixed code rates over the long term. Moreover, the fixed bitrate over a long period is lower than that of other smart coding technologies, and the image quality is better.