Axis Communications P5532E user manual Stream Profiles, 264

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AXIS P5532–E PTZ Dome Network Camera

Video

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 H.264 stream settings can be configured from the Video > Video Stream page. Select the H.264 tab. The settings defined in this page will apply to all H.264 streams that do not use a stream profile.

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 the following H.264 profile(s):

Baseline. The Baseline profile is recommended for clients that don’t support CABAC entropy coding.

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. When the activity in the scene increases, the bit rate would usually increase as well. If there is a surplus in bandwidth, this may not be an issue and selecting Variable bit rate (VBR) will be sufficient. But if bandwidth is limited, it is recommended to control the bit rate by selecting Constant bit rate (CBR). When the activity in the scene increases, VBR adjusts the bit rate according to the complexity, using up more bandwidth for increased activity in the scene, and less for lower scene activity. CBR allows you to set a target bit rate that limits the bandwidth consumption.

The CBR target bit rate works like the ceiling of a tent. It limits the bit rate, while maintaining some flexibility . The bit rate may bounce up and down within the set target but when it nears the set target value, the limitation kicks in. However, because CBR will always prioritize a continuous video stream, it allows temporary overshoots from the target bit rate. Because setting a target value prevents the bit rate from increasing, frame rate and image quality are affected negatively. To partly compensate for this, select which variable shall be prioritized, frame rate or image quality. Not setting a priority means that frame rate and image quality are equally affected.

The current bit rate can be set to appear as text overlay. Under Overlay Settings, select Include text and enter the modifier #b in the field.

To apply the settings, click Save.

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

A stream profile is a set of predefined 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 32.

When setting up continuous recording. See Continuous Recording on page 36.

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

For quick setup, use one of the predefined stream profiles. Each predefined profile has a descriptive name, indicating its purpose. If required, the predefined 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 default stream profile for the Live View page, go to Setup > Live View Config .

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Contents Axis P5532-E PTZ Dome Network Camera Liability About this documentLegal Considerations Intellectual Property RightsSupport Learn MoreSafety Information Hazard LevelsOther Message Levels Table of Contents Symptoms, Possible Causes and Remedial Actions Performance ConsiderationsFor technical specifications, see Connectors and ButtonsNetwork Connector Hardware OverviewSD Card Slot LED IndicatorsMidspan LED Indicators Control ButtonAccess the Product Access from a BrowserAccess from the Internet Set the Root Password Live ViewClick Create self-signed certificate Axis Media Control viewer toolbar Go to Setup EventsControls on the Live View Manual TriggerPTZ Controls How to Stream H.264 Media StreamsAxis Media Control AMC Alternative Methods of Accessing the Video Stream QuickTimeTM. The following paths can be usedAxis P5532-E PTZ Dome Network Camera Set Up the Product Basic SetupVideo Set Up Video StreamsClick Save to apply the new settings Pixel CounterStream Profiles 264Image Appearance Camera SettingsExposure Settings White BalanceOverlay Image SettingsDate/Time Formats in the online help To enable overlays Overlay ImagePrivacy Mask Go to Video Overlay ImageViewer Settings Configure the Live ViewDefault Viewer for Browsers Browser Viewer DescriptionGo to Setup Live View Config User Defined LinksOutput Buttons Preset Positions PTZ Pan Tilt ZoomGatekeeper Advanced Guard TourOsdi Zones LimitsControls Operator Same as administrator but with lower priority Control QueueMotion Detection Set Up Motion Detection WindowsDetectors Motion Detection ParametersMedium level 50% Default valuesHigh level 100% Low level 0%Applications Install ApplicationGo to Setup Applications Application LicensesAxis P5532-E PTZ Dome Network Camera Convert Event Types to Action Rules Set Up Action RulesEvents Go to Events Action Rules and click AddTriggers ActionsAdd Recipients Create SchedulesRecipient Types Set Up Recurrences Go to Events Recurrences and click AddContinuous Recording RecordingsRecording List Go to Recordings ListSecurity To log in again and be configured to use this functionalitySystem Options UsersCertificates Date & TimeIeee CA CertificateBasic TCP/IP Settings NetworkLinux/Unix syntax Axis Internet Dynamic DNS ServiceAxis Internet Dynamic DNS Service requires IPv4 Linux/Unix exampleNTP Configuration Advanced TCP/IP SettingsDNS Configuration Host Name ConfigurationNAT traversal port mapping for IPv4 FTPSmtp email QoS Quality of ServiceUPnPTM can be disabled under System Options Network UPnPTM UPnPTMBonjour StorageRTP/H.264 SD CardFormat SD Card MaintenanceNetwork Share Go to System Options Storage Click Network ShareSystem Overview SupportSupport Overview Logs & ReportsScripting Reset to Factory Default SettingsPlain Config File UploadAxis P5532-E PTZ Dome Network Camera Emergency Recovery Procedure TroubleshootingUpgrade the Firmware Check the FirmwareProduct cannot be accessed from a browser Symptoms, Possible Causes and Remedial ActionsProblems setting the IP address Product is accessible locally but not externallyVideo Camera Settings Problems with streaming H.264Video and image problems, general Key framesStorage and disk management problems Condensation in domeTechnical Specifications Memory Power Function/group Specifications System ApplicationMaintenance Installation aids ConnectorsFunction/group Specifications Video Performance ConsiderationsM3.2