5.3.5
OTT — Thresholds
The OTT
Threshold presets
list shows OTT threshold templates configured by the user. To add a
threshold template to the list click the
Add new threshold
button. This will open the
Edit threshold
pop-up view, allowing the user to define threshold parameters. A list threshold template entry can be
selected by clicking the threshold template; the list entry will be highlighted. Several list entries can be
selected by using regular Ctrl + click functionality. Clicking the
Duplicate selected
button will open the
Edit threshold
pop-up view on a new threshold, with all threshold template parameters duplicated except
the threshold template name. Clicking the
Delete selected
will delete the highlighted list entry. Clicking
the
Edit selected
will open the
Edit channel
pop-up view associated with the highlighted threshold
template. Batch editing is supported. Select the threshold templates and click the
Edit selected
button.
Parameters differing between templates will be indicated in the
Edit selected
pop-up view by an asterisk
wildcard symbol.
The search field allows searching for one for more list entries containing a user defined text string.
Content-check thresholds
Name:
The threshold template name defined by the user.
Profile alignment:
Picture matching in video streams is not an exact science,
as noise can be introduced in many of the stages the stream
goes through. This setting makes it possible to define how
much noise is allowed when performing profile alignment
detection. When set to
Large difference
, a large amount
of noise is allowed when comparing the frames across profiles
for out-of-alignment conditions.
Normal difference
is the
recommended setting, whereas
Small difference
allows only
a small amount of noise, which may result in too many out-of-
alignment alarms.
Freeze-frame noise floor:
It is possible to define how much noise is allowed when per-
forming freeze-frame detection. When set to Off, the freeze-
frame detection is disabled. When set to
Small change
, only
a small amount of noise is allowed when comparing frames.
Normal change
is the recommended setting, whereas
Large
change
allows a high amount of noise, which may result in
too many freeze-frame alarms.
VB7880 Advanced Content Extractor User’s Manual version 5.2
45