68 AXIS 241Q/S/QA/SA - Technical SpecificationsBandwidthAs there are many factors affecting bandwidth, it is very difficult to predict the requiredamounts. The settings that affect bandwidth are:ï the image resolutionï the image compressionï the frame rateï the MPEG-4 object typeï the MPEG-4 GOV structureï the analog cameras connected to the Video Serverï the audio settingsThere are also factors in the monitored scene that will affect the bandwidth. These are:ï the amount of motionï the imageís complexityï the lighting conditions.For MPEG-4, if there is only limited bandwidth available, and if this is more importantthan the image quality, using a constant bit rate (CBR) is recommended. Use a variable bitrate (VBR) if the image quality needs to be maintained at a higher level. If supported on thenetwork, consider also using MPEG-4 multicasting, as the bandwidth consumption will bemuch lower.
