Operation Manual

Expert Settings
If necessary, use the expert 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 structure you require for the Group-of-Pictures
(GOP). Depending on whether you place greater priority on
having the lowest possible delay (IP frames only) or using as
little bandwidth possible, you choose IP, IBP or IBBP. (GOP
selection is not available on some cameras.)
Averaging period
Select the appropriate averaging period as a means of stabilizing
the long term bit rate.
I-frame distance
Use the slider to set the distance between I-frames to Auto or to
between 3 and 60. 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
In the H.264-protocol, 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.
7.2.8
54 en | Encoder Settings
Camera Browser
Interface
2016.09 | v1.632 | AM18-Q0718 Bosch Security Systems