Bosch DIVAR AN 3000 Release Notes page 11

Security Systems
Product
DIVAR AN 3000/5000
Playback in BVC
During BVC playback under low bandwidth control, only I-Frames are streamed to save
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bandwidth. In full screen, an I-Frame will be streamed every second.
In 2x2 playback, the system streams one I-Frame every 4 seconds.
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When the recorder is under bandwidth control, BVC playback starts at half-speed by default.
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Recordings with a high update rate and resolution could cause difficult playback streaming
for single speed I-Frames when the bandwidth limit is set low (e.g. 256 Kbps). Some I-
Frames, especially those with a lot of motion, are already bigger than the 256 Kbps.
The default playback speed can be changed by the user pressing FWD so that playback
goes to single speed.
Step-by-step playback in BVC
When playback is paused, the P-Frames will also be loaded so that it is possible to step
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forward and backward through all recorded frames.
Because of the low bandwidth setting, it may take a number of seconds to load all additional
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P-Frames. If immediate stepping is started after pausing, only I-Frames will be initially
started. After a few seconds, the P-Frames will be loaded.
Export in BVC
BVC export, under low bandwidth control, streams all I- and P-Frames. This is a slow
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process but no frames will be lost.
Document type
Release notes
Release # SAP/Doc number
V2.3.1 (2015-10-23)
Release date
2015-10-28
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