Axis 216FD User Manual

Also see for Axis 216FD: Installation guide Specifications Product guide User manual User manual

Axis 216FD User Manual Manual pdf 60 page image

60General performance considerationsGeneral performance considerationsWhen setting up your system, it is important to consider how various settings andsituations will affect performance. Some factors affect the amount of bandwidth (the bitrate) required, others can affect the frame rate, and some will affect both. If the load on theCPU reaches its maximum, this will also affect the frame rate.The following factors are among the most important to consider:• High image resolutions and/or lower compression levels result in larger images.Bandwidth affected.• Access by large numbers of Motion JPEG and/or unicast MPEG-4 clients. Band-width affected.• Simultaneous viewing of different streams (resolution, compression, etc.) by dif-ferent clients. Frame rate and bandwidth affected.• Accessing both Motion JPEG and MPEG-4 video streams simultaneously. Framerate and bandwidth affected.• Heavy usage of event settings affects the camera’s CPU load. Frame rate affected.• Enabled motion detection. Frame rate and bandwidth affected.• Heavy network utilization due to poor infrastructure. Bandwidth affected• Viewing on poorly performing client PC’s lowers perceived performance. Framerate affected.Optimizing your systemTo see the bandwidth and frame rate currently required by the video stream, theAXIS 216FD/FD-V/MFD/MFD-V provides a tool that can be used to display these valuesdirectly in the video image.To do this, special format strings are added as partof a text overlay. Simply add #r (average framerate in fps) and/or #b (average bandwidth in kbps)to the overlay.For detailed instructions, please see the online helpfor Video & Image > Text Overlay Settings, and the help for File Naming & Date/TimeFormats.Important!•The figures displayed here are the values as delivered by the camera. If other restrictions arecurrently in force, (e.g. bandwidth limitation) these values might not correspond to those actu-ally received by the client.•For Motion JPEG, these values will be accurate as long as no frame rate limit has been specified.