Bosch DINION 5100i IR User Manual page 33

DINION 5100i IR
Select the necessary bit rate optimization setting:
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Maximum bit rate
The encoder does not exceed the maximum bit rate set, which limits the image quality when
necessary. Configure the Averaging period in the Encoder Statistics menu to stabilize the
maximum bit rate.
The Target bit rate is managed only when the Averaging period is set. If the value entered is
too low, it will be adjusted automatically.
This value is not the network transmission bit rate.
Target bit rate
To optimize use of the bandwidth in the network, limit the data rate for the device. The target
data rate should be set according to the desired picture quality for typical scenes with no
excessive motion.
For complex images or frequent changes of image content due to frequent movements, this
limit can temporarily be exceeded up to the value entered in the Maximum bit rate field.
The target bitrate will be the average bitrate over the averaging period.
Advanced Settings
If necessary, use the advanced settings to adapt the I-frame quality and the P-frame quality to
specific requirements. The setting is based on the H.264 quantization parameter (QP).
GOP structure
Select the required structure for the group of pictures, depending on whether you place
greater priority on having the lowest possible delay or using as little bandwidth as possible.
I-frame distance
Use the slider to set the distance between I-frames to Auto or to between 3 and 255. An entry
of 3 means that every third image is an I-frame. The lower the number, the more I-frames are
generated.
Min. P-frame QP
The Quantization Parameter (QP) specifies the degree of compression and thus the image
quality for every frame. The lower the QP value, the higher the encoding quality. A higher
quality produces a higher data load. Typical QP values are between 18 and 30. Define the
lower limit for the quantization of the P-frames here, and thus the maximum achievable quality
of the P-frames.
I/P-frame delta QP
This parameter sets the ratio of the I-frame QP to the P-frame QP. For example, you can set a
lower value for I-frames by moving the slide control to a negative value. Thus, the quality of the
I-frames relative to the P-frames is improved. The total data load will increase, but only by the
portion of I-frames.
To obtain the highest quality at the lowest bandwidth, even in the case of increased
movement in the picture, configure the quality settings as follows:
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Bosch Security Systems B.V.
Off: bit rate optimization is disabled
Maximum quality
High quality
Medium
Low bit rate
Minimum bit rate
Observe the coverage area during normal movement in the preview images.
Set the value for Min. P-frame QP to the highest value at which the image quality still
meets your needs.
User manual
Configuration | en
2023-08 | V01 | F.01U.393.997
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