Stream Profiles; Camera Settings; Overlay - Axis Q7401 User Manual

AXIS Q7401 Video Encoder
Video and Audio

Stream Profiles

A stream profile is a set of predefined stream settings including resolution, compression, frame rate and overlay settings. Stream
profiles can be used:
• When setting up recording using action rules. See Events, on page 36.
• When setting up continuous recording. See Continuous Recording, on page 40.
• In the Live View page – select the stream profile from the Stream profile drop-down list.
For quick setup, use one of the predefined stream profiles. Each predefined profile has a descriptive name, indicating its purpose. If
required, the predefined stream profiles can be modified and new customized stream profiles can be created.
To create a new profile or modify an existing profile, go to Setup > Video & Audio > Stream Profiles.
To select a default stream profile for the Live View page, go to Setup > Live View Config.

Camera Settings

The Video & Audio > Camera Settings page provides access to advanced image settings for the Axis product.
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 changes the relative difference between light 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.
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The values in the Offset Adjustments fields affect the horizontal and vertical synchronization for the image. This can
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be used to eliminate any black border surrounding the image. High values, both negative and positive can put the
image out of sync.
• De-interlacing - is used to improve video stream image quality from analog devices. Select any of the following options
from the De-interlacing drop-down list. Select None if de-interlacing is not necessary; Blending for improved image
quality that is not as processor intensive; Adaptive Interpolation performs de-interlacing of the video stream by applying
different filters on the image. This may give a better result than Motion Adaptive Interpolation in rare cases; Motion
Adaptive Interpolation performs de-interlacing of the video stream by applying different filters depending on the motion
in different parts of the image. This will in most cases result in the best image quality.
• Antialiasing will minimize distortion known as aliasing, which happens when a high-resolution image is represented at
a lower resolution.
• For each video input 75 Ohm video termination can be disabled by setting the 75 Ohm termination switch to OFF. These
terminations are enabled on factory default. In cases where the product is to be connected in parallel with other equipment,
for optimum video quality, it is recommended that termination be enabled for only the last device in the video signal chain.

Overlay

Overlays are used to provide extra information, for example for forensic video analysis or during product installation and
configuration. Overlays are superimposed over the video stream.
An overlay text can display the current date and time, or a text string. When using a text string, modifiers can be used to display
information such as the current bit rate or the current frame rate. For information about available modifiers, see File Naming &
Date/Time Formats in the online help .
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