Axis Communications p3344 Stream Proles, Camera Settings

AXIS P3344 Fixed Dome Network Camera

Video and Audio

Setting the compression level affects the image quality and bandwidth; the lower the compression, the higher the image quality

with higher bandwidth requirements.

To avoid bandwidth problems on the network, you can limit the frame rate allowed to each viewer. The m aximum frame rate can be

set to Unlimited, or you can limit the frame rate to a value.

An image or text can be superimposed over the image as overlay. See Overlay, on page 20.

Save your settings before they can take effect.

H.264, also known as MPEG-4 Part 10/AVC, is a video compression standard that provides high quality video streams at low bit rates.

An H.264 video stream consists of different types of frames such as I-frames, P-frames and B-frames. An I-fra me is a complete image

whereas P-frames and B-frames only contain the differences from previous/future frames.

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 have 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 quality 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.

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

There are four pre-programmed stream proﬁles available for quick set up. The settings for these can be adjusted. New customized

proﬁles can also be created. Each proﬁle has a descriptive name, indicating its purpose.

•Thestreamproﬁles can be accessed from the Stream proﬁle drop-down list in the Live View page.

• To add, copy, modify, and remove stream proﬁles go to Video & Audio >Stream Proﬁles.

• To select the default stream proﬁle go to Live View Conﬁg>Stream Proﬁle and choose the proﬁle from the drop-down list.

For more information see the online help on this page.

Camera Settings

The Video & Audio > Camera Settings page provides access to advanced image settings for the Axis product.

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.