User manual

AXIS Q7424–R
Video and Audio
Image Appearance
Increasing the Color level increases the color saturation. The value 100 gives maximum color saturation. The value 0 gives a
black and white image.
The image Brightness can be adjusted in the range 0–100, where a higher value produces a brighter image.
The Contrast change s the re lati ve difference betwee n lig ht and dark. It can be adjusted using the slidebar.
Video input
• Enter a descriptive name for your video source in the Video source name field.
• The values in the Offset Adjustments fields affect the horizontal and vertical synchronization for the image. T his can be used
to eliminate any bla ck border surrounding the imag e. High values, both negative and positive can put the image out of sync.
• De-interlacing - is used to improve video stream image quality f rom analog devices. Select any of the follow ing options
from the De-interlacing drop-down list. Select None if de-interlacing is not necessary; Blending for improve d image quality
that is not as processor intensive; Adaptive Interpolation performs de-interla c ing of the video stream by applying di ffe rent
filters on the image. This may give a better result than M otion Adaptive Interpolation in r are cases; Motion Adaptive
Interpolation performs de-interlacing of the vide o stream by applying different filters depending on the m otion in different
parts of the imag e. This will in most cases re sult in the best ima g e quality.
• Antialiasing will minimize distortion known as aliasing, which happens when a high-resolution image is repres ented at
alowerresolution.
• For each video input 75 Ohm video termination can be enabled/d isabled via the product's web page at V ideo & Audio >
Video Input > Video termination. These terminatio ns are enabled on factory default. In cases where the p roduct is to be
connected in parallel with other equipment, for optimum video quality, it is recommended that terminatio n be enabled for
only the last device in the video sig nal chain.
Image Settings
Noise reduction - Set to On to enable nois e reduction. Noise reduction may increase
the amount of motion blur.
Privacy Mask
A privacy mask is an ar ea of solid color that pr
ohibits users from viewi ng parts of the monitored area. Privacy masks cannot be
bypassed via the VAPIX® Application P ro gramming Inte rfa ce (API).
The Privacy M ask List (Video & Audio > Privacy Mask) shows all the masks that are currently configured in the Axis pro duct and
indicates if they are enabled.
You can add a new mask, re-size the mask with the mouse, choose a color for the mask, and give the mask a name.
For m ore information, see the online help
Note
Privacy mask is not available for the quad stre am. However, privacy masks configured on each channel will be displayed
in the qua d.
Overlay
Overlays are used to provide extra information, for example for forensic video analysis or duri n g product installation and
configuration. Overlays are superimposed over the video stream.
An overlay text can display the current da te a nd time, or a text string. W hen using a text string, modifiers can be used to display
information s uch a s the current bit rate or the current frame r ate. For information about available modifiers, see
File Naming &
Date/Time Formats
in the online help .
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