MViP-II
IP Based Multi-Image Display & Monitoring Solution
Revision 1.2
Page - 83
9.
FAULT DEFINITIONS
Connection Error:
This system fault will appear if a connection to the desired multicast address or HTTP
address cannot be made.
Video Black:
This fault is triggered when the decoded frame is considered black.
•
Error Duration Control (Frames):
The error duration control specifies how many frames that will
be detected as black consecutively before the detection fault is triggered.
•
Reset Duration Control (Frames):
The Reset Duration control specifies how many consecutive
frames will be detected as not black before the fault is cleared.
•
Threshold Control:
The threshold controls how many pixels may be non-black in the decoded
frame. It is the non-black tolerance level.
o
A Value of 0% means all pixels must be black to trigger a fault (Strict Case).
o
A Value of 50% means that half of the pixels must be black to trigger a fault.
o
A Value of 100% means that no pixels need to be black to trigger a fault (Relaxed Case)
Video Frozen:
This fault is triggered when two consecutive frames have no motion. The motion is decided
using the threshold and comparing changes between the two frames.
Error Duration (Frames):
The Error Duration control specifies how many pairs of frames that will be
detected as frozen consecutively before the detection fault is triggered.
Reset Duration (Frames):
The Reset Duration control specifies how many pairs of frames that will be
detected as frozen consecutively before the detection fault is cleared.
•
Threshold Control (percentage):
The threshold controls how much motion or changes are
accepted before triggering a fault.
o
A Value of 0% means consecutive frames must have no motion changes to trigger a
fault (Strict Case).
o
A Value of 50% means that half of the frame may change or move to trigger a fault.
o
A Value of 100% means that consecutive frames may have any motion change and
trigger a fault (Relaxed Case).
Video loss:
This Fault is triggered when a connection is made to the Input stream but no elementary
video frames have been decoded successfully.
•
Error Duration (Seconds):
The error duration controls how many seconds of video loss state
must pass before the fault is triggered.
•
Reset Duration (Seconds):
The error duration controls how many seconds of successful video
decode must pass before the fault is cleared.
DVB Subtitle loss:
This Fault is triggered when no valid DVB subtitles are decoded. Independent faults
are triggered for each subtitle service monitored.
•
Error Duration (Seconds):
The error duration controls how many seconds of DVB subtitle loss
state must pass before the fault is triggered.
•
Reset Duration (Seconds):
The error duration controls how many seconds of valid DVB subtitle
decodes must pass before the fault is cleared.
SCTE 27 Subtitle Loss:
This Fault is triggered when no valid SCTE 27 subtitles are decoded.
Independent faults are triggered for each subtitle service monitored.
