Axis 223M User Manual

Also see for AXIS 223M: Specifications Product guide Installation guide Hoja de datos User manual

AXIS 223M - Technical Specifications45Frame rates - Motion JPEG and MPEG-4Typical frame rates in frames/second (fps) for Motion JPEG and MPEG-4 video streams from the AXIS 223M,specified with the parameter settings listed below. Note that these values are guidelines only - actual values mayvary.• Normal 4:3 - 9 fps• Widescreen 16:9 - 12 fpsMotion JPEG settings:• Viewing in AMC• Compression level = 30%MPEG-4 settings:• Viewing in AMC• Compression level = 30%• Video Object Type = Advanced Simple• GOV length = 8• GOV structure = IP**Note that setting the GOV structure to use “I-frames only” will increase the frame rate at the expense of the bit rate.Important!•The figures displayed here are the values as delivered by the camera. If other restrictions are currently in force, (e.g. band-width limitation) these values might not correspond to those actually received by the client.•For Motion JPEG, these values will only be accurate as long as no frame rate limit has been specified.BandwidthAs there are many factors that affect bandwidth, it is very difficult to predict the required amounts. The settingsthat affect bandwidth are:• image resolution• image compression• frame rate• MPEG-4 object type• MPEG-4 GOV structure• maximum exposure time• audioThere are also factors in the monitored scene that will affect the bandwidth. These are:• amount of motion• image’s complexity• lighting conditions.For MPEG-4, if there is only limited bandwidth available, and if this is more important than the image quality,using a constant bit rate (CBR) is recommended. Use a variable bit rate (VBR) if the image quality needs to bemaintained at a higher level. If supported on the network, consider also using MPEG-4 multicasting, as thebandwidth consumption will be much lower.