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Video loss:
Detection
Recovery
Black screen:
Detection
Recovery
Threshold
Static screen:
Detection
Recovery
Threshold
AG-7.2.B1-092414 • Restricted - customer use only
When video framing loss, commonly known as "sync", is detected by the
hardware and persists over the Video Duration threshold, then a VIDEOLOST
Alert is generated. Only the Duration threshold is configurable; the level
threshold is not configurable.
Example: Video lost signal = TRUE over duration of 31 sec exceeding cycle time
and duration threshold.
When notification is enabled, SNMP trap and email messages are sent if
configured by the admin.
Default: 30 seconds.
Default: 10 seconds.
When the percentage of black pixels (BS) in video frames of incoming video
signal exceeds the certainty threshold and persists over the duration threshold.
When notification is enabled, SNMP trap and email messages are sent if
configured by the admin.
Default: 30 seconds.
Default: 10 seconds.
Default: 95%
Detected when video frame pixels at the same frame location are compared for
color and luminosity between pairs of consecutive video frames and the
percentage of pixels that match exceeds the static screen (SS) threshold while
also exceeding the duration threshold.
When the pixel color, luminance and locations matching between pairs of
consecutive video frames exceed 95% of all video frame pixels for longer than
30 seconds, a Video static alert is declared.
When notification is enabled, SNMP trap and email messages are sent if
configured by the admin.
Default: 30 seconds.
Default: 10 seconds.
Default: 95%
Table: Video Alerting
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