For video compression, IndigoVision has added Video Thinning, reducing storage over longer periods by selectively removing ‘P’ or motion frames. It’s combined with Activity Controlled Framerate (ACF), a technique for achieving further dramatic reductions in storage by only consuming bandwidth when motion was present, yet without dropping any frames.
As part of the 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 four 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 stand-alone units and the Windows NVR server software.
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 cameras and video transmitter modules. ACF controls the frame rate of the 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 frame rate; 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 according to the UK firm plug-and-go recording. They offer dual power and network connections, surveillance rated disks and RAID configurations. The units can be set up to work as fail-over backups or mirrored NVRs or distributed around the network to deliver a fault-tolerant and redundant recording environment. Each NVR-AS 3000 can record video and audio from up to 64 cameras and playback up to 20 video streams at full frame rate simultaneously. For example, a single unit could record H.264 video from 32 cameras continuously at 4SIF, full frame rate, based on moderate motion levels for 50 days, with a typical power consumption of 53W for a RAID configured unit. Visit –
