AXIS Q7404 Video Encoder
Detectors
Medium level (50%)
A large difference in luminance
is required to trigger motion
detection.
Low level (0%)
Even very small objects trigger
motion detection.
An object that appears in
the window triggers motion
detection only for a very short
time before it is considered as
non-moving.
Only very bright objects on
a dark background trigger
motion detection.
Recommended values
5–15%
60–90%
75–95%
Default values
15%
90%
90%
Note
• To trigger on small objects or movements, use several small motion detection windows rather than one large window
and select a low object size.
• To avoid triggering on small objects, select a high object size.
• While monitoring an area where moving objects are not expected, select a high history level. This will cause motion
detection to trigger as long as the object is present in the window.
• To only detect flashing light, select a low sensitivity. In other cases high sensitivity is recommended.
Audio Detection
The Axis product can be configured to generate an alarm when audio rises above or falls below the threshold value. The threshold
value can be set in the range 0–100 where 0 is the most sensitive and 100 the least sensitive.
1. Go to
Detectors > Audio Detection
.
2. Set the audio alarm level and click
Save.
3. Go to
Events > Action Rules
and set up an action rule, see
Setting Up an Action Rule, on page 37
.
Detected audio is indicated by colored peaks in the
Activity
indicator. An event is triggered when detected audio rises above or falls
below the threshold value, which is represented by the bar.
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