Axis Communications 215 PTZ-E user manual File sizes, General performance considerations

AXIS 215 PTZ/AXIS 215 PTZ-E - Technical Specifications

File sizes

The AXIS 215 PTZ/AXIS 215 PTZ-E delivers the following file sizes (PAL):

	PAL		PAL aspect ratio corrected
	Resolution	Min-Max (KB)		Resolution	Min-Max (KB)
4CIF	704x576	10 - 300	4CIF	768x576	11 - 330
2CIF expanded	704x576	10 - 250	2CIF expanded	768x576	11 - 270
2CIF	704x288	5 - 150	2CIF	768x288	5.5	- 160
CIF	352x288	2.5 - 80	CIF	384x288	2.7	- 90
QCIF	176x144	1 - 20	QCIF	192x144	1.1	- 22

The AXIS 215 PTZ/AXIS 215 PTZ-E delivers the following file sizes (NTSC):

	NTSC		NTSC aspect ratio corrected
	Resolution	Min-Max (KB)		Resolution	Min-Max (KB)
4CIF	704x480	8 - 250	4CIF	640x480	7 - 230
2CIF expanded	704x480	8 - 200	2CIF expanded	640x480	7 - 180
2CIF	704x240	4 - 125	2CIF	640x240	3.5 - 110
CIF	352x240	2 - 70	CIF	320x240	1.8 - 60
QCIF	176x120	0.8 - 15	QCIF	160x120	0.7 - 14

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.

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