File Sizes; General Performance Considerations; Optimizing Your System - Axis 215 PTZ User Manual

File sizes

The AXIS 215 PTZ/AXIS 215 PTZ-E delivers the following file sizes (PAL):
4CIF
2CIF expanded
2CIF
CIF
QCIF
The AXIS 215 PTZ/AXIS 215 PTZ-E delivers the following file sizes (NTSC):
4CIF
2CIF expanded
2CIF
CIF
QCIF

General performance considerations

When setting up the camera, it is important to consider how various settings and situations will affect
performance. Some factors affect the amount of bandwidth (the bit rate) required, others can affect the frame
rate, and some will affect both. If the load on the CPU 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. Bandwidth affected.
• Simultaneous viewing of different streams (resolution, compression, etc.) by many clients. Frame rate
and bandwidth affected.
• Accessing both Motion JPEG and MPEG-4 video streams simultaneously. Frame rate and bandwidth
affected.
• Heavy usage of event settings affects the 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 lowers perceived performance. Frame rate affected.
• Access by large number of audio clients using full-duplex mode. Bandwidth affected.

Optimizing your system

To see the bandwidth and frame rate currently required by the video stream, the AXIS 215 PTZ/AXIS 215 PTZ-E
provides a tool that can be used to display these values directly in the video image.
To do this, special format strings are added as part of a text overlay.
Simply add #r (average frame rate in fps) and/or #b (average bandwidth
in Kbps) to the overlay.
For detailed instructions, please see the online help for Video & Image >
Overlay Settings, and the help for File Naming & Date/Time Formats.
AXIS 215 PTZ/AXIS 215 PTZ-E - Technical Specifications
PAL
Resolution Min-Max (KB)
704x576 10 - 300
704x576 10 - 250
704x288 5 - 150
352x288 2.5 - 80
176x144 1 - 20
NTSC
Resolution Min-Max (KB)
704x480 8 - 250
704x480 8 - 200
704x240 4 - 125
352x240 2 - 70
176x120 0.8 - 15
PAL aspect ratio corrected
Resolution
4CIF 768x576
2CIF expanded 768x576
2CIF 768x288
CIF 384x288
QCIF 192x144
NTSC aspect ratio corrected
Resolution
4CIF 640x480
2CIF expanded 640x480
2CIF 640x240
CIF 320x240
QCIF 160x120
47
Min-Max (KB)
11 - 330
11 - 270
5.5 - 160
2.7 - 90
1.1 - 22
Min-Max (KB)
7 - 230
7 - 180
3.5 - 110
1.8 - 60
0.7 - 14