Axis Communications axis user manual Stream Profiles, Image, 264

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AXIS M1143–L

Setting Up the Product

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 be rotated.

Mirror. If required, the image can be mirrored.

Maximum frame rate. To avoid bandwidth problems, the frame rate allowed to each viewer can be limited.

Overlay settings. See Overlay on page 17.

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 quality video streams at low bit rates. An H.264 video stream consists of different types of frames such as I-frames and P-frames. An I-frame is a complete 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.

The Axis product supports two H.264 profiles. The Main profile provides higher compression than the Baseline profile with the same video quality, but requires more processing power to decode.

The bit rate can be set as Variable 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 effect.

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 modifier #b in the field.

MJPEG

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

Astream profile is a set of pre-configured stream settings including resolution, compression, frame rate and overlay settings. Stream profiles can be used:

When setting up recording using action rules, see Events on page 27.

When setting up a continuous recording, see Continuous Recording on page 31.

In the Live View page — select the stream profile from the Stream profile drop-down list.

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Contents Axis M1143-L Intellectual Property Rights Photobiological SafetyAbout this Document LiabilityAxis M1143-L Table of ContentsConnectors Hardware OverviewHardware Overview Color Indication LED IndicatorsAccessing the Product Accessing the ProductAccess from a Browser Click Create self-signed certificate Access from the InternetSet the Root Password Network TCP/IP AdvancedPTZ Controls Live ViewControls on the Live View Axis Media Control viewer toolbarAxis M1143-L Axis Media Control AMC How to Stream H.264Media Streams Media StreamsAlternative Methods of Accessing the Video Stream Axis M1143-L Setting Up the Product Setting Up the ProductBasic Setup Video Video StreamPixel Counter Stream Profiles Image264 White Balance Camera SettingsExposure Settings Image AppearanceGo to Video Video Stream and select the Image tab View AreaOverlay Overlay ImageGo to Video Overlay Image Privacy MaskDefault Viewer for Browsers Live View ConfigLive View Config Output Buttons Viewer SettingsGo to Setup Live View Config User Defined LinksAxis M1143-L Guard Tour Preset PositionsPTZ Pan Tilt Zoom PTZ Pan Tilt ZoomControls AdvancedMotion Detection DetectorsDetectors Camera TamperingMotion Detection Parameters Set Up Motion Detection WindowsDefault values Low level 0%Recommended values Events EventsSetting Up an Action Rule PTZ ControlGo to Events Action Rules and click Add Recipients SchedulesRecurrences Go to Events Recurrences and click Add Continuous Recording RecordingsRecordings Recording ListAxis M1143-L Users System OptionsSystem Options SecurityGo to System Options Security Https IeeeCertificates Go to System Options Security Certificates Date & TimeNetwork Basic TCP/IP SettingsAdvanced TCP/IP Settings NAT traversal port mapping for IPv4 HttpsSmtp email QoS Quality of ServiceBonjour StorageUPnPTM RTP/H.264Ports MaintenancePorts & Devices Network ShareLogs & Reports SupportSupport Overview System OverviewPlain Config Reset to Factory Default SettingsScripting File UploadChecking the Firmware TroubleshootingTroubleshooting Emergency Recovery ProcedureSymptoms, Possible Causes and Remedial Actions Problems setting the IP addressProduct cannot be accessed from a browser Product is accessible locally but not externally Problems with the H.264 formatStatus and Network indicator LEDs are flashing red rapidly No images displayed on web Video and image problems, generalVideo Camera Settings Problems uploading filesMotion Detection triggers unexpectedly Storage and disk management problemsTechnical Specifications Technical SpecificationsConnectors Function/group Specifications InstallationMaintenance General Casing PowerPerformance Considerations
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