Axis Communications AXIS 241SA user manual Quad stream settings, Overlay/Mask settings, Mjpeg

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20AXIS 241QA/AXIS 241SA - Video & image settings

The MPEG-4 standard provides many different coding tools for various applications in different situations. As most MPEG-4 clients do not support all of these tools, it is usual to instead define and use subsets for different clients or groups of clients. These settings allow you to define the type of viewing client to use.

Adjusting the maximum bit rate and setting it to variable or constant is a good way of controlling the bandwidth used by the MPEG-4 video stream.

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 MJPEG video stream in these situations. Defining the frame size as Unlimited provides consistently good image quality at the expense of increased bandwidth and storage usage during low light. Limiting the frame size optimizes bandwidth and storage usage, but gives poor image quality. To prevent increased bandwidth and storage usage, the maximum frame size should be set to an optimal value.

For more information on these advanced settings, please see the online help.

Quad stream settings

A Quad stream enables you to monitor all channels at the same time. Instead of having four Internet Explorer windows open, you can have just one window open with the Quad view. You can edit this view with the desired stream time, frame rate, and text overlay. These settings are the same as the Image Settings. See page 18.

Overlay/Mask settings

Overlay/Mask type

Overlay/Mask type allows you to place an overlay, or up to three privacy masks over the video image:

Upload and place an image as an overlay - usually used to provide extra information in the video image.

Place up to three configurable privacy masks to conceal dif- ferent areas of the video image.

Text overlay

Image

Overlay

Selecting the overlay/mask type from the menu will display further settings available for the selected type. See the online help for further information.

Note: A privacy mask cannot be bypassed, but an overlay image can be bypassed with the help of the VAPIX® API.

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Contents User’s Manual About This Document Table of contents Axis video server Product description Overview of the Axis video serverLED indicators Front panel Axis 241QANetwork StatusRear panel Switches & connectorsPower Axis 241QA/AXIS 241SA Product description Using the video server Accessing the video serverSetting the root password Please see the online help for more informationLive View AMC Audio controls Video and audio streams Video stream typesMotion Jpeg MPEG-4Axis Media Control AMC How to stream MPEG-4MPEG-4 protocols and communication methods Other methods of accessing the video stream RTP+RTSPRTP/RTSP RTP/RTSP/HTTP or RTP/RTSP/HTTPSAxis Vapix API Accessing the audio streamsOther MPEG-4 clients Configuring the video server Accessing the Setup toolsImage appearance Video & image settingsImage settings Video source settings AdvancedQuad stream settings Overlay/Mask settingsMjpeg Overlay/Mask typeUpload and use an overlay image Overlay image requirementsOverlay image limitations Image Formats Image SizeUse a Privacy Mask Audio Settings Enable AudioAudio Audio ChannelsAudio Input Audio Output Advanced Audio SettingsNoise canceller threshold value Noise canceller attenuation Axis 241QA/AXIS 241SA Audio Live View Config LayoutCustomizing the default Upload Own Web FilesDefault Live View Video Default Video FormatDefault Viewer Viewer SettingsCheck Show Custom Link Html ExamplesUser-defined Links Sequence Mode External VideoInstalling PTZ devices Pan Tilt ZoomPTZ configuration Preset positionsPTZ controls Control panel Using CGI links to control PTZ devicesPTZ control modes Advanced Preset positionsGuard tour PTZ control queue Axis 241QA/AXIS 241SA Pan Tilt Zoom Event configuration Event serversHow to set up a triggered event Event typesTriggered Event Click Add triggered on the Event typesHow to set up a scheduled event Pre-trigger and post-trigger buffersScheduled event Click Add scheduled on the Event typesSettings Camera tamperingHow to configure Motion Detection Motion detectionPort status Object SizeSystem options SecurityUsers IP Address FilterStream, IP address filtering must be enabled HttpsAxis 241QA/AXIS 241SA System options CA servers Date & timeRadius Services Network Basic TCP/IP settingsIP Address Configuration Network Advanced TCP/IP settings DNS configurationNTP Configuration Host Name ConfigurationRtsp HttpFTP QoS Settings SocksQoS Smtp emailSnmp RTP / MPEG-4Support MaintenancePorts & devices Configuration Resetting to the factory default settings Using the Control ButtonPin Unit connectorsD-Sub connector I/O terminal connector Pin Function DescriptionSchematic diagram I/O terminal connector COM ports RS-232 and RS-485Axis 241QA/AXIS 241SA Unit connectors Upgrading the firmware TroubleshootingChecking the firmware Emergency recovery procedure Lit Be accessed from a web browserAlarms, etc, to a destination outside the local network Video Image Problems No images displayed in the Web interfaceSnapshot images Only I framesAudio volume too low/high Audio Advanced SettingsAudio Axis 241QA only Poor audio qualityTechnical specifications ModelsConnectors Video access from WebApplications not General performance considerations Optimizing your systemFrame rates Motion Jpeg Frame rates MPEG-4Bandwidth Active Speaker a speaker with a built-in power amplifier GlossaryCompression See Image Compression De-interlacing See interlacingEncoder See Video encoder Fixed iris See AutoirisHalf-duplex See Full-duplex Megapixel See Pixel Axis 241QA/AXIS 241SA Glossary SSL/TSL Identity of the server Video camera See Network camera and Cctv video cameraAn I-VOP is a complete image frame Index ActionHttp API Http API requests Http port number Http serverRTP 14 Rtsp 14 Video streams 13, 15