As part of the advanced compression processing, Indigovision’s IP video stream is encoded into a series of I-frames and P-frames. An I-frame is a video frame that has been encoded without reference to any other frame of video and contains information on the whole scene. A recording will contain regular I-frames throughout the stream, typically every 4 seconds. Interspersed between the I-frames are a series of P-frames, which are motion-compensated frames that only contain information about parts of the scene that have changed since the previous frame. The video thinning process, which is applied to recorded footage older than a configured age, simply removes the P-frames. This can lead to a dramatic reduction in the storage requirement, although at the expense of losing full motion video. Video thinning is available on both the NVR-AS 3000 standalone units and the Windows NVR server software.

Significant reductions in video storage can also be achieved by deploying ACF, which is based on real time motion analytics that run at the network edge in Indigovision’s IP security cameras and video transmitter modules. ACF controls the framerate of the security camera video stream based on the amount of motion in the scene. When there is no activity, video is streamed over the network at minimum framerate; the instant motion is detected the video is automatically transmitted at the maximum configured framerate.

Indigovision’s NVR-AS 3000 standalone units are Linux based, providing a robust and resilient plug-and-go recording solution. They offer dual power and network connections, surveillance rated disks and RAID configurations. The units can be setup to work as failover backups or mirrored NVRs or distributed around the network to deliver a fault-tolerant and redundant recording environment. This ensures a high-level of video recording security and gives peace of mind to the end user.

Each NVR-AS 3000 can record video and audio from up to 64 security cameras and playback up to 20 video streams at full framerate simultaneously. For example, a single unit could record H.264 video from 32 security cameras continuously at 4SIF, full framerate, based on moderate motion levels for 50 days, with a typical power consumption of just 53W for a RAID configured unit. The combination of excellent compression, NVR performance and low power consumption leads to a smaller equipment footprint, less AC cooling plant and lower running costs.