What is video pumping frame storage

What is video pumping frame storage

Video, the strict meaning is to play a single frame frame by frame, using the visual persistence characteristics of the naked eye, resulting in continuous visual illusion of vision. Draw frames, is to extract a single frame from these pictures.

Where are the advantages of pumping frame storage? Storing frames of historical images is a way to preserve key frames (I-frames) for a longer period of time. All the videos are stored in full; when the save time exceeds the full storage period, the system will gradually delete non-key frames, reduce storage capacity, and effectively extend the storage time of video information. After the frame is drawn, the image clarity remains unchanged.

With the advent of high-definition surveillance, the cost of the entire video surveillance system began to increase dramatically. Among these, not only is the cost of front-end HD cameras increased, but the cost of back-end storage devices has risen dramatically as image clarity has increased from SD to HD. The cost of storage devices in the entire video surveillance system is roughly 15% to 30%. In digital network high-definition video surveillance systems, the cost of storage devices in the entire system rises to 50% to 70%. For special venues, some videos need to be stored for more than 30 days, and some are even longer. This can lead to the storage of huge amounts of data.

Fixed Rate Framed Storage Technology

    According to the current mainstream compression method, the required space for surveillance            video storage is as follows:

    H.264 compression method: HAFL definition, real-time 25 frames, 300M/hour/way;

    H.264 compression method: GIF definition, real-time 25 frames, 200M/hour/road;

Based on the above data, we can basically estimate the storage space required for all the video surveillance images. For example, a bank needs a 1-channel D1 video surveillance system, 7*24 hours of monitoring, data can be covered in 3 months, then the total capacity needs 1.1TB.

If the video we already have is not as important as the new video, we can reduce the recording frame rate of the old video. This can greatly reduce the need for old video storage space. At the same time, old video can still be used as evidence if needed. Using fixed-rate decimation frame storage technology, such as 25-frame/s video files stored within one month, can be reduced to 15 frames/s without affecting video recording information, which can also greatly save storage. space.