52
en | Camera
MIC IP starlight 7000 HD
2016.07 | 5.0 | F.01U.291.520
Operation Manual
Bosch Security Systems
Profile number
Default Profile name
Description
Profile 8
3G Optimized
Ideal for encoding on a 3G uplink where bit rate
limitations are critical.
If required, enter a new name for the profile.
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.
Maximum bit rate
This maximum bit rate is not exceeded under any circumstances. Depending on the video
quality settings for the I- and P-frames, this fact can result in individual images being skipped.
The value entered here must be at least 10% higher than the value entered in the
Target bit
rate
field. If the value entered here is too low, it will be adjusted automatically.
Encoding interval
This parameter determines the interval at which images are encoded and transmitted. For
example, entering or selecting 4 means that only every fourth image is encoded, while the
following three are skipped. Skipping frames can be particularly advantageous for networks
with low bandwidths. The image rate in frames per second (fps) appears next to the text field
or slider.
Video resolution
Select the desired resolution for the video image.
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 that you require for the group of pictures, depending on whether you
place greater priority on having the lowest possible delay (IP frames only) or using as little
bandwidth as possible.
Options are IP, IBP, and IBBP.
Averaging period
Select the appropriate averaging period as a means of stabilizing the long term bit rate.
I-frame distance
This parameter allows you to set the intervals in which the I-frames will be coded. Auto means
auto mode, whereby the video server inserts I-frames as necessary. Values range from 3 to 60.
An entry of 3 indicates that I-frames are continuously generated. An entry of 4 indicates that
only every fourth image is an I-frame, and so on; the frames in between are coded as P-frames.
Note that the values supported depend on the GOP structure setting. For example, only even
values are supported with IBP; if you have selected IBBP, only 3 or multiples of 3 are
supported.
Min. P-frame QP
This parameter allows you to adjust the image quality of the P-frame and to define the lower
limit for the quantization of the P-frames, and thus the maximum achievable quality of the P-
frames. 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 quantization of the P-
