Bandwidth and Space For Storage Calulations

Bandwidth and Space For Storage Calulations

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Network video items utilize network bandwidth and space for storage according to their configuration. This is dependent around the following:

  • Quantity of cameras
  • Whether recording is going to be continuous or event-based
  • Quantity of hrs each day your camera is going to be recording
  • Fps
  • Resolution
  • Video compression type: Motion JPEG, MPEG-4, H.264
  • Scenery: Image complexity (e.g. grey wall or perhaps a forest), lighting conditions and quantity of motion (office atmosphere or crowded train stations)
  • How lengthy data should be saved

bandwith

Bandwidth needs

In a tiny surveillance system including eight to ten cameras, a fundamental 100-megabit (Mbit) network switch may be used without needing to consider bandwidth restrictions. A lot of companies can use a surveillance

system of the size utilizing their existing network. When applying 10 or even more cameras, the network load could be believed utilizing a couple of guidelines: A video camera that’s set up to provide high-quality images at high frame rates uses approximately. two to three Mbit/of the accessible network bandwidth.

Using more than 12 to fifteen cameras, get a switch having a gigabit backbone. If your gigabit-supporting switch can be used, the server that runs the recording keeper must have a gigabit network adapter installed.

Technologies which allow the treating of bandwidth consumption include using VLANs on the switched network, Service quality and event-based tracks.

storage

Calculating storage needs

As pointed out earlier, the kind of video compression used is among the factors affecting storage needs. H.264 compression format is undoubtedly the best video compression technique currently available. Without compromising picture quality, an H.264 encoder can help to eliminate how big an electronic video file by greater than 80% in comparison using the Motion JPEG format and around 50% greater than using the MPEG-4 standard. What this means is a smaller amount network bandwidth and space for storage are needed to have an H.264 video file. Sample storage information for those three compression formats are supplied within the tables below. Due to numerous variables affecting average bit rate levels, information aren’t so obvious cut for H.264 and MPEG-4. With Motion JPEG, there’s a obvious formula because Motion JPEG includes one person apply for each image. Storage needs for Motion JPEG tracks vary with respect to the frame rate, resolution and degree of compression.

Approximately. bit rate / 8(bits inside a byte) x 3600s = KB each hour / 1000 = Megabytes each hour

Megabytes each hour x hrs of operation each day / 1000 = GB each day

GB each day x asked for duration of storage = Storage need

MPEG-4 calculation

Approximately. bit rate / 8(bits inside a byte) x 3600s = KB each hour / 1000 = Megabytes each hour

Megabytes each hour x hrs of operation each day / 1000 = GB each day

GB each day x asked for duration of storage = Storage need

Note: The formula doesn’t consider the quantity of motion, which is a vital component that may influence how big storage needed

Motion JPEG calculation

Image size x fps x 3600s = Kilobyte (KB) each hourOr1000 = Megabyte (Megabytes) each hour

Megabytes each hour x hrs of operation each day / 1000 = Gigabyte (GB) each day

GB each day x asked for duration of storage = Storage need

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