Encoder - Alerting

The alerting feature configures MIP to constantly monitor program streams. If the stream does not meet the monitoring criterion for the duration specified an alert is generated. A single alert is dispatched for each event. If the stream returns to normal in excess of the recovery time a new alert is generated if the stream once again falls outside monitoring parameters.

Figure: Encoder Alerting Video

Table: Video Alerting

Video loss:	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.
Detection	Default: 30 seconds.
Recovery	Default: 10 seconds.
Black screen:	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.
Detection	Default: 30 seconds.
Recovery	Default: 10 seconds.
Threshold	Default: 95%
Static screen:	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.
Detection	Default: 30 seconds.
Recovery	Default: 10 seconds.
Threshold	Default: 95%

Figure: Encoder Alerting Audio

Table: Audio Alerting

Audio high:	Audio high fault is detected when the incoming audio stays above the high level threshold for sufficient duration to exceed the audio duration threshold. AUDIOHIGH Alert Example: Audio alert is configured on a channel. Certainty threshold = -1 dB; Duration set to default of 30 sec. Audio input signal detected = 2 dB (above Certainty) for 6 minutes (exceeding the cycle time for the lineup plus the Duration threshold). A media fault therefore is detected, generating an audio alert and automatically creating a fault clip, which is stored under the Clips — Fault Clips section on the MIP Media Player. When notification is enabled, SNMP trap and email messages are sent if configured by the admin. If you wish to change any Certainty, Duration, or Recovery levels, please contact MIP Support.
Detection	Default: 30 seconds.
Recovery	Default: 10 seconds.
Threshold	-1dB.
Audio low:	Low audio fault is detected when the incoming audio stays below the low level threshold and the duration of the fault exceeds the duration threshold. Disable audio alert detection on channels with frequent silence. When notification is enabled, SNMP trap and email messages are sent if configured by the admin.
Detection	Default: 30 seconds.
Recovery	Default: 10 seconds.
Threshold	Default: -40dB.

Figure: Encoder Alerting Metadata

Table: Metadata Alerting

Metadata	Monitors embedded channel metadata.
Detection	Default: 30 seconds.
Recovery	Default: 10 seconds.
Threshold	Defines the number of metadata instances missed in the detection threshold duration. Example: if threshold is set to 5, if more than 5 instances are missed during the 30 second window an alert is generated.

Table: Sync

Sync mode:

Determines how quickly NTP sync will compensate for real time clock drift.