Axis M1124, Руководство пользователя

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AXIS M1124 Network Camera
Video
Lowest Zipstream strength is the default setting for the product. This configuration is very safe to use in all applications while still
reducing the bit rate.
For cloud-connected cameras or cameras using edge storage that need to limit the bit rate for increased storage time it is
recommended to select the
Highest Zipstream strength . This setting is very good to combine with motion detection triggering and
variable bit rate (VBR) where the bit rate is allowed to adapt to changes in complexity in the scene.
Axis’ Zipstream Technology for H.264 conforms to the H.264 standard and is compatible with third-party clients and VMS solutions
that decode H.264 video.
The bit rate controller built into the product can be combined with Zipsteam to enforce a maximum bit rate (MBR) limit. Axis
Communications recommends using VBR or MBR with a rather high bit rate limit to enable the full potential of Axis’ Zipstream
Technology.
MJPEG
Sometimes the image size is large due to low light or complex scenery. Adjusting the maximum frame size helps to control the
bandwidth and storage used by the Motion JPEG video stream in these situations. Setting the frame size to the
Default setting
provides consistently good image quality at the expense of increased bandwidth and storage usage in low light. Limiting the frame
size optimizes bandwidth and storage usage, but may give poor image quality. To prevent increased bandwidth and storage usage,
the maximum frame size should be set to an optimal value.
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 42 .
• 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 > Stream Profiles .
To select a default stream profile for the Live View page, go to Setup > Live View Config .
Camera Settings
The Video > Camera Settings page provides access to advanced image settings for the Axis product.
Image Appearance
To change Image Appearance go to the menus under Setup > Video > Camera Settings .
Increasing the Color level increases the color saturation. The value 100 gives maximum color saturation and the value 0 gives
minimum color saturation.
The image Brightness can be adjusted in the range 0–100, where a higher value produces a brighter image.
Increasing the Sharpness can increase bandwidth usage. A sharper image might increase image noise especially in low light
conditions. A lower setting reduces image noise, but the whole image will appear less sharp.
The Contrast changes the relative difference between light and dark. It can be adjusted using the slidebar.
Local Contrast applies contrast to a specific area of the image. Use the slider to adjust the contrast, where a higher value produces
an image with high contrast between the dark and light areas and is suitable for scenes with wide dynamic range.
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