Axis Communications AXIS P1343 Security Camera User Manual


 
AXIS P1343 Network Camera
Video and Audio
Video & Audio > Video Stream.UnderPreview, click Open and select the Show pixel counter optio n to enable the
rectangle in the image. Use the mouse to mo ve and resize the rectangle, or enter the number of pixels in the Width
and Height elds and click Apply.
Video & Audio > Focus.SelecttheShow pixel counter option to enable the rectangle in the image. Use the mouse to
move and resize the rectangle, or enter the number of pixels in the Width and Height elds a n d c lick Apply.
The Live View page in Internet Ex plorer in Windows. Right-click in the image and select Pixel counter.Usethemouse
to move and resize the rectangle.
Image
You can modify the image resolution and compression, and rotate the image from the Image tab (Video & Audio > Video Stream).
The image can also be mirrored from the Image tab.
Setting the compression level affects the image quality and bandwidth; the lower the compressio n , the higher the image quality
with higher bandwidth requirements.
To avoid bandwidth problems on the netw ork, you can limit the frame rate all owed to each viewer. The maximum frame rate ca n 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 21.
Save your settings before they can take effect.
H.264
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 consis ts of different types of frames such as I-frames, P-frames and B-frames . An I-frame is a complete ima ge
whereas P-frames and B-frames only contain the differences from previous/future fram
es.
The GOV length is the number of frames between two consecutive I-frames. Increa
sing the GOV length may save considerably on
bandwidth requirements in some cases, but may als o have an adverse affect on image q uality.
ThebitratecanbesetasVariable Bit Rate (VBR) or Constant Bit Rate (CBR). VBR adjusts the bit rate according to the image
complexity, using up more bandwidth for incre ased a ctivity in the imag e , and le ss for lo we r ima ge a ctivity. CB R a llow s you to s et a
xed Target bit rate that consumes a predictable amount of bandw
idth. As the bit rate wo uld usuall y nee d to incre ase 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 r ate and image quality are equally
affected. You must save your settings befo
re they can take effect.
The current bit rate can be set to appe
ar as text overlay. To do this, select the Include text check box option under Overlay Settings
and enter the code #b in the eld.
MJPEG
Sometimes the image size is large due to low light or comple x scenery. Adjusting the m a ximum frame size helps to control the
bandwidth and stor
age 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 maxim um fr
ame size should be set to an optimal value.
Stream Proles
There are four pre-programmed stream proles available for quick set up. The settings for these can be adjusted. New customized
proles can also be created. Each prole has a descriptive name, indicating its purpose.
•Thestreamproles can be accessed from the Stream prole drop-down list in the Live View page.
To add, copy, modify, and remove stream proles go to Video & Audio > Stream Proles.
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