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AXIS M3004-V Network Camera
Video
Image
The default image settings can be configured under Video> Video Stream. Select the Image tab.
The following settings are available:
• Resolution. Select the default resolution.
• Compression. The compression level affects the image quality, bandwidth and file size of saved images; the lower the
compression, the higher the image quality with higher bandwidth requirements and larger file sizes.
• Rotate image. If required, the image can b e rotated.
• Maximum frame rate. To avoid bandwidth problems, the frame rate allowed to each viewer c an be limited.
• Overlay settings.SeeOverlay on page 18.
Click Save to apply the new settings.
H.264
H.264, also known as MPEG-4 Part 10/AVC, is a video compression standard that provides high q uality video streams at low bit rates.
An H.264 video stream consists of different types of frames such as I-fra mes and P-frames. An I-frame is a comple te image whereas
P-frames only contain the differences from previous 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 increa
sed
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 effect.
The current bit rate can be set to appear as text overlay. To do this, s
elect the Include text check box option under Overlay
Settings and enter the modifier #b in the field.
Stream Profiles
Astreamprofile is a set of pre-confi gured stream settings including resolution, compression, frame rate and overlay settings.
Stream profi les can be used:
• When s etting up recording using action rules, see Events on page 28.
• W hen setting up a continuous recording, see Continuous Recording on page 31.
• I n the Live View page — select the stream profile from the Stream profile drop-down list.
Four pre-programmed stream profiles are availab le for quick set up. Each pre-programmed profile has a descriptive name, indicating
its purpose. If required, the pre-programmed 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 defau lt stream profi le for the Live View page, go to Setup > Live View Config.
Camera Settings
The Video > Camera Settings page provides access to ad vanced image settings for the Axis product.
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