Axis 214PTZ Nework Camera User Manual download pdf (Page 47)

AXIS 214 PTZ

Important!

•The figures displayed here are the values as delivered by the camera. If other restrictions are currently in force,

(e.g. bandwidth 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.

Frame rates - Motion JPEG

The following test results show the frame rates in frames/second (fps) for Motion JPEG streams from the

AXIS 214 PTZ, using a compression level of 50%. Note that these values are guidelines only - actual values

may vary.

Frame rates - MPEG-4

The following test results show the frame rates in frames/second (fps) for MPEG-4 streams from the AXIS

214 PTZ. Note that these values are guidelines only - actual values may vary.

The MPEG-4 test conditions:

• Compression level = 50%

•

Video Object Type = Advanced Simple

• GOV structure = IP*

*Note that setting the GOV structure to use “I-frames only” will increase the frame rate.

Bandwidth

As there are many factors affecting bandwidth, it is very difficult to predict the required amounts. The

settings that affect bandwidth are:

• the image resolution

• the image compression

•the frame rate

• the MPEG-4 object type

• the MPEG-4 GOV structure

• the audio settings.

There are also factors in the monitored scene that will

affect the bandwidth. These are:

• the amount of motion

• the image’s complexity

• the 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 be maintained at a higher level. If supported on the network, consider also using MPEG-4

multicasting, as the bandwidth consumption will be much lower.

fps

4CIF 25/30

2CIF expanded 25/30

2CIF 25/30

CIF 25/30

QCIF 25/30

fps

4CIF 17/21

2CIF expanded 17/21

2CIF 25/30

CIF 25/30

QCIF 25/30

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Axis 214PTZ Nework Camera User Manual Page 47

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