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AXIS 213 - Technical Specifications
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.