Axis Communications Video Server 243Q Blade - Manual (Page 21)

21 AXIS 243Q Blade - Video & Image
Advanced - MJPEG settings
Sometimes the image size may be large due to low light or complex scenery. Adjusting the
Maximum frame size is a good way of controlling the bandwidth and storage used by the
MJPEG video stream in these situations. Defining the frame size as Unlimited will provide
consistently good image quality at the expense of increased bandwidth and storage usage
during low light. Limiting the frame size helps optimize bandwidth and storage usage, but
gives poor image quality. To prevent increased bandwidth and storage usage, the
maximum frame size should be set to an optimal amount.
Overlay/Mask
Overlay/Mask Settings
When using an image overlay,
select the Overlay/Mask Type from
the following options:
• Uploaded image as overlay -
usually used to provide extra
information in the video image.
• Configurable areas as privacy
masks - up to three black areas
are used to conceal parts of the
video image.
The difference between an overlay
and a privacy mask is that a
privacy mask cannot be bypassed by accessing the video stream with the help of the AXIS
HTTP API, whereas an overlay can.
Selecting the overlay/mask type will display further settings available for the selected type.
See the online help for further information.
Upload and use an overlay image
1. Select Uploaded image as overlay in the Overlay/Mask Type drop-down list.
New options appear.
2. Click the Browse button by the Upload own image field and locate the image file
on your computer or server.
3. Click the Upload button and follow the on-screen instructions.
To use an already uploaded image:
1. Select an uploaded image from the Use image drop-down list.
2. Place the image at the required location by entering the x and y coordinates.
Note:
The x and y coordinates, and the width and height of the overlay/mask are relative to the maximum avail-
able resolution of the product.
overlay
Image overlay
Text