AXIS P3301 Fixed Dome Network Camera
Video and Audio
To avoid bandwidth problems on t he network, you can limit the frame ra te allowed to each viewer. The maximum frame rate can be
set to Unlimited, or y ou can limit the frame rate to a value.
An image or text can be superimposed over the image as overlay. See Overlay, on page 17.
Save your settings before they can take effect.
H.264
H.264, also known as MPEG-4 Part 10/AVC, is a video compression s tandard that provides high q uality video streams at low bit r ates.
An H.264 video stream con sis t s of different types of frames such as I-fra mes, P-frame s and B-frames . An I-frame is a complete image
whereas P-frames and B-frames only contain the differences from pre vious/future fra mes.
The GOV length is the number of frames between two consecutive I-frames. Increasing the GOV length may save considerably on
bandwidth requirements in some cases, but may also hav e an adverse affect on image quality.
ThebitratecanbesetasVariable Bit Rate (VBR) or Constant Bit Rate (CBR). VBR adjusts the bit rate according to the image
complexity, using up more bandwidth for increased activity in the image, and less for lower image activity. CBR allows you to set a
fixed Target bit rate that consumes a predictable amount of bandwidth. As the bit rate would usually need to increase for increased
image activity, but in this case cannot, frame rate and image quality are affected negatively. To partly compensate for this, it is
possible to prioritize either frame rate or image quality. Not setting a priority means that frame rate and image qua lity are equally
affected. You must save your settings before they can take e ffect.
The current bit rate can be set to appear as text overlay. To do this, select the Include text check box option under Overlay Settings
and enter the code #b in the field.
MJPEG
Sometimes the image size is large due to low light or complex scene ry. Adjusting the maximum fra me size helps to control the
bandwidth and storage used by the Motion JPEG video stream in these situations. Setting the fram
esizetotheDefault 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 usag e, but may give poor image quality. To prevent i ncreased b andwidth and storage usage,
the maximum frame size should be s e t to an optimal value.
Stream Profiles
There are four pre-programmed stream profiles availab le for quick set up. The settings for these can be adjus ted. New customized
profiles can also be created. Each profile has a descriptive name, indicating its purpose.
•Thestreamprofiles can be accessed from the Stream profile dro p-down list in the Live View page.
• To add, copy, modify, and remove stream profiles go to Video & Audio > Stream Profiles.
• To sel ect the default stream profile go to Live View Config > Stream Profile and choose the profile from the drop-down list.
For more information
seetheonlinehelp
on this page.
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 prod uces a brighter image.
Increasing the Sharpness can increase bandwidth usage. A sharper image might increase image noise especia lly in low light
conditions. A lower setting reduces image noise, but the whole image will appear less sharp.
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