VIVOTEK - A Leading Provider of Multimedia Communication Solutions
86 - User's Manual
• When the SD/SDHC/SDXC card storage space is full, cameras will stop recording. When
the network conneciton between VAST server and cameras is restored, videos in the SD
card will be transmitted back to the VAST server. Note that the videos that were not recorded
during the time when the network was disconnected will not be transmitted.
• If the videos on the cameras belong to those that are about to be erased within 24 hours (e.g.,
for the lack of storage space on a VAST server), those videos will not be retrieved.
Limitations:
• Retrieving video fragments from a camera can momentarily double the throughput of normal
video streaming.
• Video streams recorded using the MJPEG codec is not supported by Seamless recording.
• Seamless recording can only take place from a camera with 1 video stream recorded to a
maximum of 3 VAST servers. .
Onscreen Elements for Seamless Recording:
• The associated icons will appear in the Liveview, popup window on e-Map, and the Matrix
view. The status icon appears on the upper right of the view cell.
• Below is the description of the Seamless recording statuses and the indicative icons.
Normally the video fragments will be retrieved rst, and then the event log:
Currently not recording video from camera, but is retrieving data from camera due to
previous disconnection.
Currently not recording video from camera, but is retrieving event log.
Currently recording video to system as well as retrieving data.
Currently recording video to system as well as retrieving event log.
After a period of time, the gaps of recording (those blue lines or blocks representing network
interruptions during the recording) should be gradually stitched up. It is, however, system
integrators' responsibility to build a reliable network. Additional bandwidth should also be
available for retrieving fragmented recordings from the camera side.
The VAST checks for the need for retrieving framented videos by every one minute. If the
retrieval failed due to some network faults, the server will re-try the retrieval tasks later on.
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