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DOC | V4.5 | 2010.09 Installation and Operating Manual Bosch Sicherheitssysteme GmbH
Encoding interval
The setting selected here determines the interval at which images are encoded and
transmitted. The image rate in ips (images per second) is displayed next to the text field.
Video resolution
Here you can select the desired resolution for the video image. At present only the following
resolution is available:
– QVGA
320 × 240 pixels
Expert Settings
You can use the expert settings to adapt the I-frame quality and the P-frame quality to specific
requirements, if necessary. The setting is based on the H.264 quantization parameter (QP).
GOP structure
Select the structure you require for the Group of Pictures here. Depending on whether you
place greater priority on having the lowest possible delay (IP frames only) or using as little
bandwidth as possible, you can choose between IP, IBP, and IBBP.
I-frame distance
This parameter allows you to set the intervals in which the I-frames will be coded. With the
Auto setting, the encoder inserts I-frames as necessary. An entry of 3 indicates that only every
third image is an I-frame; the frames in between are coded as P-frames.
I-frame quality
This setting sets the image quality of the I-frames. Select Auto to ensure that the maximum bit
rate is not exceeded. Auto automatically follows the P-frame image quality.
P-frame quality
This setting adjusts the maximum image quality of the P-frames. Auto automatically adjusts to
the optimum combination of movement and image definition (focus).
The value 9 represents maximum image quality, a value of 51 represents minimum quality.
With the slide control, define a control range from a chosen value to 51. The encoder delivers
the best possible quality within this control range while maintaining the maximum bit rate.
Default
Click Default to return the profile to the factory default values.