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20 

AXIS 282/AXIS 282A - Video and Audio Streams

How to stream MPEG-4

Deciding on the combination of protocols and methods to use depends on your viewing 

requirements, and on the properties of your network. Setting the preferred method(s) is 

done in the control applet for AMC, which is found in the Windows Control Panel. When 

this has been set, AMC will test all the selected methods in the specified order, until the 

first functioning one is found.

RTP+RTSP 

This method (actually RTP over UDP and RTSP over TCP) should be your first 

consideration for live video, especially when it is important to always have an up-to-date 

video stream, even if some images do get dropped. This can be configured as multicast or 

unicast. 

Multicasting provides the most efficient usage of bandwidth, especially when there are 

large numbers of clients viewing simultaneously. Note however, that a multicast broadcast 

cannot pass a network router unless the router is configured to allow this. It is thus not 

possible to multicast over e.g. the Internet. 

Unicasting should be used for video-on-demand broadcasting, so that there is no video 

traffic on the network until a client connects and requests the stream. However, if more 

and more unicast clients connect simultaneously, the server will at some point become 

overloaded. There is also a maximum of 20 simultaneous viewers to be considered.

RTP/RTSP

This unicast method is RTP tunneled over RTSP. This can be used to exploit the fact that it 

is relatively simple to configure firewalls to allow RTSP traffic.

RTP/RTSP/HTTP or RTP/RTSP/HTTPS

These two methods can also be used to traverse firewalls. Firewalls are commonly 

configured to allow the HTTP protocol, thus allowing RTP to be tunneled.

The AXIS Media Control 

The recommended method of accessing live video (MPEG-4 and/or Motion JPEG) and 

audio from the AXIS 282/AXIS 282A is to use the AXIS Media Control (AMC) in Microsoft 

Internet Explorer in Windows. This ActiveX component is automatically installed on first 

use, after which it can be configured by opening the AMC Control Panel applet from the 

Windows Control Panel. Alternatively, right-click the video image in Internet Explorer.

Summary of Contents for 26123R1

Page 1: ...AXIS 282 AXIS 282A Video Server Integrator and User s Manual ...

Page 2: ...d For the final products and solutions responsibility for fulfillment of safety EMC and other regulatory standards controlled by law is therefore passed on to the integrator Buyer of the AXIS 282 AXIS 282A component Liability Every care has been taken in the preparation of this manual Please inform your local Axis office of any inaccuracies or omissions Axis Communications AB cannot be held respon...

Page 3: ...Video Server 15 The Live View page 16 Video and Audio Streams 18 Video Stream Types 18 Audio Stream Types 19 MPEG 4 protocols and communication methods 19 How to stream MPEG 4 20 The AXIS Media Control 20 Other methods of accessing the video stream 21 Configuring the Video Server 23 Accessing the Setup tools 23 Video Image Settings 24 Image Settings 24 Video Source Settings 25 Overlay Mask Setting...

Page 4: ...MTP email 54 SNMP 54 UPnP 54 RTP MPEG 4 54 Ports Devices 55 Maintenance 55 Support 56 Advanced 56 Resetting to the Factory Default Settings 57 Unit Connectors 58 The Terminal I O Connector 58 58 Schematic Diagram Terminal I O Connector 58 The 34 Pin Header 59 Schematic Diagram 34 I O Pins 60 Troubleshooting 61 Checking the Firmware 61 Upgrading the Firmware 61 Support 62 Technical Specifications 6...

Page 5: ...5 AXIS 282 AXIS 282A Bandwidth 71 Glossary 72 Index 74 ...

Page 6: ...l An active speaker with a built in amplifier can be connected to Line Out mono to enable two way communication Audio communication can be bi directional full duplex push to talk half duplex or in one direction only simplex Up to 20 viewers can access the AXIS 282 282A simultaneously when using Motion JPEG and MPEG 4 unicast Each MPEG 4 viewer requires a separate MPEG 4 decoder license of which on...

Page 7: ... Pan Tilt Zoom devices Video in and out connections Audio in and out connections LED outputs An auxiliary connection point for DC power See The Terminal I O Connector on page 58 and The 34 Pin Header on page 59 for more information AXIS 282 282A Front Flash button Terminal block Control button Network connector Terminal block The front of the AXIS 282 282A has one each in and out connector and a p...

Page 8: ...D Power LED LED indicators After completion of the startup and self test routines the multi colored Status Network and Power idicators flash as follows Unlit When configured for no flash on camera access Green Steady for normal operation Can be configured to flash green at intervals whenever the camera is accessed See the online help for more information Amber Steady during startup reset to factor...

Page 9: ...mounting holes on the AXIS 282 282A shown in the figure below The video server measures 82mm in length from the outside edge of the Terminal Connector to the top of the AXIS 282 282A The width of the AXIS 282 282A is 79mm Connector Connector Connector Connector 79mm 82mm Terminal Connector The height of the AXIS 282 282A from the top of the network connector to the bottom of the control button is ...

Page 10: ...ion with no HTTP proxy and uses a DHCP server to assign IP addresses use the One Click installation procedure See page 14 Notes The AXIS 282 282A has a default IP address 192 168 0 90 DHCP is enabled by default in the AXIS 282 282A UPnP is enabled by default in the AXIS 282 282A AXIS IP Utility AXIS IP Utility is a free Windows application that discovers and displays Axis devices on your network T...

Page 11: ... software components you can configure your AXIS 282 282A to use a Java applet for updating the images See the help file Live View Config Layout Default Viewer for Internet Explorer or use another supported Web browser see Technical Specifications on page 66 7 The installation is now complete Proceed to Using the Video Server on page 15 UPnP UPnP functionality is enabled by default in the AXIS 282...

Page 12: ...y from 192 168 0 125 is displayed approximately 10 15 seconds type Ctrl C to stop Ping 8 Start a browser and enter the IP address in the Address Location field 9 Press Enter 10 Enter a password for the root user administrator 11 If required accept the installation of AMC onto your workstation Note AMC must be installed to view live video images in Microsoft Internet Explorer If your working enviro...

Page 13: ...82A 4 Start restart the AXIS 282 282A This must be done no later than 2 minutes after entering the ARP and Ping commands 5 Close the ARP Ping session when Reply from 192 168 0 125 or similar is displayed approximately 10 15 seconds 6 Start a browser and enter the IP address in the Address Location field 7 Press Enter 8 Enter a password for the root user administrator 9 The installation is now comp...

Page 14: ...ton on the front panel once The Status indicator on the front of the video server will flash green while it connects to the AXIS Internet Dynamic DNS service When the registration process is complete the indicator will return to steady green 5 Visit www axiscam net where you will be guided through the remainder of the installation Please have the serial number of your product ready and follow the ...

Page 15: ...h other operating systems See also the Technical Specifications on page 66 Note For information on installing the Video Server please refer to Installation on page 10 Accessing the Video Server 1 Start your browser 2 Enter the IP address or host name of the AXIS 282 AXIS 282A in the Location Address field of your browser 3 Enter the user name and password set by the administrator 4 A video image i...

Page 16: ...able button To resize the displayed image click the View Size buttons half size x1 2 full size x1 x2 or x4 This will not change the resolution of the image not available in Sequence Mode The Video Format drop down list allows the video format on the Live View page to be temporarily changed The Output buttons control an output directly from the Live View page These buttons are configured under Setu...

Page 17: ...ia Control which is available from the Windows Control Panel Internet Explorer only Click the View Full Screen button and the video image will fill the entire screen area No other windows will be visible Press Esc Escape on your keyboard to cancel full screen view Click the Speaker and Microphone buttons to switch the sound off and on for the speaker and microphone respectively Use the slider to c...

Page 18: ...ccessing Motion JPEG streams can use different image settings MPEG 4 This is a video compression standard that makes good use of bandwidth and which can provide high quality video streams at less than 1 Mbit s The MPEG 4 standard provides scope for a large range of different coding tools for use by various applications in different situations and the AXIS 282 AXIS 282A provides certain subsets of ...

Page 19: ...ws programs to manage the real time transmission of multimedia data via unicast or multicast RTSP Real Time Streaming Protocol serves as a control protocol to negotiate which transport protocol to use for the stream RTSP is thus used by a viewing client to start a unicast session see below UDP User Datagram Protocol is a communications protocol that offers limited service for exchanging data in a ...

Page 20: ... possible to multicast over e g the Internet Unicasting should be used for video on demand broadcasting so that there is no video traffic on the network until a client connects and requests the stream However if more and more unicast clients connect simultaneously the server will at some point become overloaded There is also a maximum of 20 simultaneous viewers to be considered RTP RTSP This unica...

Page 21: ...m ip mpeg4 media amp Note ip IP address Other MPEG 4 clients Although it may be possible to use other clients to view the MPEG 4 stream it is not guaranteed to work in all cases For some other clients e g QuickTime the Video Object Type must be set to Simple It may also be necessary to adjust the advanced MPEG 4 settings To assess the video stream from e g QuickTime the following path can be used ...

Page 22: ...reamed from the client to the server over HTTP when using Motion JPEG and MPEG 4 Accessing the Audio Streams In addition to accessing audio in the Live View page using AMC audio from the AXIS 282A can also be accessed in the following ways HTTP API You can read about accessing audio for the other protocols through the HTTP API at http www axis com techsup QuickTime Windows Media Player It is possi...

Page 23: ...io Live View Config and Event Configuration settings The AXIS 282 AXIS 282A is configured from the Setup link in a standard browser see also the Technical Specifications on page 66 Accessing the Setup tools Follow the instructions below to access the Setup Tools from a browser 1 Start the browser and enter the IP address or host name of the AXIS 282 AXIS 282A in the location address field 2 The Li...

Page 24: ...age Settings Image Appearance Modify the Image Appearance to optimize the video images according to your requirements All configuration of images and overlays will affect the performance of the Video Server depending on the usage and the available bandwidth High resolution generates larger files Lower compression improves image quality but generates larger files Black White uses less bandwidth tha...

Page 25: ...fined When the set time has expired a new stream can be started by refreshing the page in the Web browser Note that the maximum video stream time does not apply to clients connecting via multicast To avoid bandwidth problems on the network the frame rate allowed to each viewer can also be limited Select either Unlimited or define a maximum frame rate per viewer Test For a preview of the image and ...

Page 26: ...ine help for further information Note If you need to see an area of the video that is covered by an overlay or mask a privacy mask cannot be bypassed An overlay image however can be bypassed with the help of the AXIS HTTP API Upload and use an overlay To upload an overlay image to the camera 1 Select Uploaded image as overlay in the drop down list for Overlay Mask Type New options appear 2 In the ...

Page 27: ...hat it appears over the video image i e it is always the entire image that is displayed Please see the online help for more information Use a Privacy Mask To use privacy masks to hide different areas of the video image 1 Select Configurable areas as privacy mask in the drop down list for Overlay Mask Type New options appear 2 Enter the x y coordinates of the top left hand corner of the mask and th...

Page 28: ...ituations 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 For more information on these ...

Page 29: ...audio output of the AXIS 282A must have a built in amplifier e g some PC speakers Audio Settings This section describes how to configure the basic audio settings for the AXIS 282A e g set the communication mode and adjust the sound levels in the microphone and speaker connected to the camera Enable Audio Check the box Enable Audio to enable audio functionality Audio Channels There are two mono aud...

Page 30: ...dio but no audio will be transmitted from the AXIS 282A to other web clients This could be used to e g provide spoken instructions to a person seen in a camera This mode requires you to use the push to talk button Simplex AXIS 282A microphone only mode only transmits audio from the AXIS 282A to any web clients It will not receive audio from any other web clients This can be used in remote monitori...

Page 31: ...ng a microphone that is placed close to the person talking and can also help reduce background noise The filter cuts the lowest and the highest frequencies The bypass frequency range is approximately 250Hz to 3700Hz measured at 10dB cut off break points Enable echo cancellation can reduce the feedback generated when using full duplex If sound distortion is encountered turning echo cancellation off...

Page 32: ...ue can be set to High Medium High Medium low and Low A lower threshold will accept most of the audio to pass Only the weakest background noise will be reduced A higher threshold will make the noise canceller act on even stronger background noise At the maximum level High there is a risk of reducing useful audio as well There is a trade off between noise canceling and sound quality In other words i...

Page 33: ...own custom made page as the default web page Click the Configure button and see the following page The other settings on this page concern which other features to include e g buttons and links See page 34 for more information Customizing the default page The appearance of the default AXIS 282 AXIS 282A Live View page can be customized to suit your own requirements or you can upload and use your ow...

Page 34: ...ck the box provided next to it and then click the Remove button To use your uploaded file click the radio button and select the file from the drop down list by Own To use an external file located somewhere other than in the AXIS 282 AXIS 282A click the radio button and enter the URL by External Own Home Page To use a previously uploaded web page as the default page check the checkbox select the pa...

Page 35: ...he Pulse button activates the port for a defined period Active Inactive displays 2 buttons one for each action on off Default Video Format in Internet Explorer for Windows Select the default format to use on the Live View page Checking the box for Show video format selection displays a drop down list on the Live View page allowing you to temporarily change the format AMC AXIS Media Control Setting...

Page 36: ...he Live View page just as if they were video sources connected directly to the AXIS 282 AXIS 282A Click the Add button to open the External Video Source Setup dialog which is used to make all the necessary settings Example of a path to an external video source Sequence Mode The live view page can be configured to rotate through selected internal and or external video sources in order or randomly P...

Page 37: ...g please refer to the online help available from each web page Note Pre trigger and Post trigger buffers will be lost if the connection to the event server fails When the setup is complete the connection can be tested by clicking the Test button the connection test takes approximately 10 seconds Event type Triggered Event see page 38 Scheduled Event see page 39 Action Server type Purpose Informati...

Page 38: ...he web interface on restart reboot after e g power loss How to set up a triggered event This example describes how to set the AXIS 282 AXIS 282A to upload images when the main door is opened 1 Click Add triggered on the Event types page 2 Enter a descriptive name for the event e g Main door 3 Set the priority High Normal or Low see online help files 4 Select which Video Source the event is to act ...

Page 39: ... If this occurs an entry will be created in the unit s log file Continue image upload unbuffered enable the upload of images for a fixed length of time Specify the length of time for the uploaded recording in seconds minutes or hours or for as long as the trigger is active Finally set the desired image frequency to the maximum the maximum available or to a specified frame rate The frame rate will ...

Page 40: ...ed within the Include window Once configured the motion detection windows will appear in a list when motion detection is selected to trigger an event See How to set up a triggered event above Note Using the motion detection feature may decrease overall performance in the Video Server How to configure Motion Detection This example describes how to configure motion detection 1 Click Motion Detection...

Page 41: ... motion detection Default values Low Medium to High Medium to High Examples Avoid triggering on small objects in the image by selecting a high size level To trigger motion detection as long as there is activity in the area select a high history level To only detect flashing light low sensitivity can be selected In other cases a high sensitivity level is recommended Port Status Under Event Configur...

Page 42: ...59 for more information 2 In the setup tools go to Setup System Options Ports Devices and then select the port RS 232 RS 485 to configure 3 Select Pan Tilt Zoom from the Usage drop down list 4 Click Upload to install a PTZ driver PTZ drivers are available from the Axis Web site at www axis com 5 Click Port Options to modify the port settings The default values correspond to the values specified by...

Page 43: ...amera view than can be used to quickly move the camera to a specific location From Preset Position Setup use the Pan Tilt and Zoom PTZ controls to steer the camera to the required position When satisfied with the camera s position enter a descriptive name The camera position iris and focus settings are then saved as a preset position The position can be assumed at any time by selecting the preset ...

Page 44: ...moves the camera to the right and left the Tilt bar tips the camera up and down the Zoom bar zooms the view in and out Note that this is only available if the camera is fitted with a zoom lens the Iris bar adjusts the brightness of the image Clicking on the bars themselves or on the arrows at the end of the bars will move the camera to a new position The type of movement and the location of this n...

Page 45: ...cking in the image the camera view will center on the absolute position that was clicked Joystick mode moves the camera in the direction of the mouse pointer By clicking and holding the mouse button down in the image the PTZ device moves the camera in that direction relative to the center of the image The further from the center the image is clicked the greater the movement The camera stops moving...

Page 46: ...p running after the user has logged off or closed the Web browser Advanced Device Settings The device settings window is for driver specific settings so the appearance of this window can vary depending on the driver installed Options that can be configured include Driver Specific Settings for Video Source 1 Mechanical Limits for Moving Video Source 1 Light Control for Video Source 1 and Extended D...

Page 47: ...his window allows you to set up a queue for viewers wanting to access the AXIS 282 AXIS 282A and limits the number of viewers and the length of time each viewer can access and control the video stream For more information on how to set up the control queue please see the online help Note also that a viewer who belongs to a group see Users on page 49 that has a higher PTZ priority can go in front o...

Page 48: ...inistrator is in control For more information see How to set up a triggered event on page 38 3 Operator Same as administrator with lower priority 4 Guard Tour Guard tour has control of PTZ for an indefinite period of time It may be overridden by Operator Event or administrator Guard Tour will resume when higher priority groups leaves the queue For more information see Guard Tour on page 46 5 Viewe...

Page 49: ...he Live View page if Pan Tilt Zoom is available IP Address Filtering Checking the Enable IP address filtering box enables the IP address filtering function Up to 256 IP address entries may be specified a single entry can contain multiple IP addresses Click the Add button to add new filtered addresses When the IP address filter is enabled addresses added to the list are set as allowed or denied add...

Page 50: ...e created using one of these methods A self signed certificate can be created in the Video Server but this does not guarantee the same level of security as an official certificate An official certificate issued by a CA Certificate Authority A CA issues and manages security credentials and public keys for message encryption 1 Click either Create self signed certificate or Create Certificate Request...

Page 51: ...efined formats or use your own custom date and time formats See File Naming Date Time Formats in the online help for information on how to create your own file formats Network Basic TCP IP Settings IP Address Configuration The IP address of the Video Server can be set automatically via DHCP or a fixed IP address can be set manually DHCP is enabled by default To use a fixed IP address you must also...

Page 52: ...ent settings Use the following DNS server address enter the desired DNS server by specifying the following Domain name enter the domain s to search for the host name used by the AXIS 282 AXIS 282A Multiple domains can be separated by semicolons The host name is always the first part of a Fully Qualified Domain Name e g myserver is the host name in the Fully Qualified Domain Name myserver mycompany...

Page 53: ...cally selected If necessary you can set the connection speed by selecting it from the drop down list Maximum bandwidth Specify in Mbit s or kbit s the maximum bandwidth that the Video Server is allowed to use on your network This is a useful function when connecting your Video Server to busy or heavily loaded networks The default setting is Unlimited Note When using MPEG 4 as the video format reme...

Page 54: ... HTTPS If using V1 and V2c enter the community name for read only access to all supported SNMP objects except the root password and other objects that require write access Default value public You can also specify the community name for read write access to all supported SNMP objects except read only objects Default value pass If using HTTPS enter the password if it has not already been set To set...

Page 55: ...he boot protocol DHCP or static the static IP address the default router the subnet mask the system time Default The default button should be used with caution Pressing this will return all of the Video Server s settings to the factory default values including the IP address Upgrade Server See Upgrading the Firmware on page 61 Backup To take a backup of all of the parameters and any user defined s...

Page 56: ...the destination email address Advanced Scripting is an advanced function that provides the possibility to customize and use scripts This function is a very powerful tool Caution Improper use may cause unexpected behavior or even cause loss of contact with the unit If a script does cause problems reset the unit to its factory default settings A backup file may be of use to return the unit to its la...

Page 57: ...82 AXIS 282A to the factory default settings using the Control Button 1 Switch off the AXIS 282 AXIS 282A by disconnecting power 2 Press and hold the Control button while reconnecting the power 3 Keep the Control button pressed until the Status Indicator displays yellow this may take up to 15 seconds 4 Release the Control button 5 When the Status Indicator changes to Green may take up to 1 minute ...

Page 58: ...Power in out 8 20V 2 GND 3 I O In 4 I O Out If the AXIS 282 AXIS 282A has been configured to have power going in through the 34 I O pins see Schematic Diagram 34 I O Pins on page 60 power can can be configured to go out through pin 1of the Terminal I O Connector Schematic Diagram Terminal I O Connector 3 3V Pin 1 Power in out 8 20V Pin 2 GND Pin 3 I O In Pin 4 I O Out Note The gray box shows compo...

Page 59: ...r LED 23 Serial port RTS RS 232 7 Control button 24 Serial port CTS RS 232 8 I O IN 25 Serial port TXD RS 232 9 I O OUT 26 Serial port RXD RS 232 10 I O GND 27 Serial port GND 11 Y C Video in Y 28 Power GND 12 Y C GND 29 Power GND 13 Y C Video in C 30 Power I O 14 Y C GND 31 Power GND 15 Composite video in 32 Power IN 16 Composite Video Source GND 33 Power IN 17 34 Power IN Pin Function Pin Functi...

Page 60: ...1 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 GND RS 232 Device Switch Mode Power Supply Power I O Power 8 20V RS 485 External Device Amp Microphone Composite Video Source Y C Video Source 3 3V 3 3V GND Note The gray box shows components located on the Axis 282 282A ...

Page 61: ...he network Note Pre configured and customized settings will be retained for use when the new firmware is running pro vided the features are available in the new firmware although this is not guaranteed by Axis Communica tions 1 Save the firmware file to your computer The latest version of the AXIS 282 AXIS 282A firmware is available free of charge from the Axis Web site at www axis com techsup or ...

Page 62: ...he page that appears use the Browse button to select the upgrade file to use e g axis282qa bin or axis282sa bin Then click the Load button to restart the upgrade process 4 After the upgrade has completed 1 10 minutes the unit will automatically restart and show a steady green on the Power and Status LEDs and flashing green or amber on the Network LED 5 Reinstall the AXIS 282 AXIS 282A If the emerg...

Page 63: ...erver Set the IP address again using the ARP Ping command 2 Access the unit and disable BOOTP and DHCP in the TCP IP settings Return the unit to the main network The unit now has a fixed IP address that will not change 3 As an alternative to 2 if dynamic IP address via DHCP or BOOTP is required select the required service and then configure IP address change notification from the network settings ...

Page 64: ...ate than expected Check with the administrator that there is enough bandwidth available Check also the settings for bit rate control in the Video Image Advanced MPEG 4 settings Using an inappro priate video object type can also affect the frame rate See the online help for more informa tion Check in the AMC control panel applet MPEG 4 tab that video processing is not set to Decode only I frames Lo...

Page 65: ...settings with your system administrator or reconfigure the default router settings DC power not enabled for micro phone If the microphone has a built in amplifier then the DC power must be enabled on the Audio Settings page Audio volume too low high Volume settings incorrect The volume of the microphone or speaker connected to the AXIS 282 AXIS 282A is either too high or too low Change the volume ...

Page 66: ... 11 Motion JPEG 23 MPEG 4 Rotation 90o 180o 270o Aspect ratio correction Color and black white Overlay capabilities time date text image or privacy mask Deinterlacing filiter Audio features AXIS 282A only G 711 PCM 64kbit s G 726 ADPCM 32 or 24 kbit s full duplex half duplex simplex or audio off Security Multiple user levels with password protection IP address filtering HTTPS encryption Alarm and ...

Page 67: ...nce User s manual and installation tool available at www axis comWeb based configurationConfiguration backup and restoreFirmware upgrades over HTTP or FTP firmware available at www axis com Video access from Web browser Camera live view Sequence tour capability for up to 20 PTZ presets or other Axis video sources Customizable HTML pages Minimum web browsing requirements Pentium III 500 MHz or high...

Page 68: ...ing See www axis com partner adp_partners htm for more software applications via partners Included Accessories Pentium MPEG 4 licenses 1 encoder 1 decoder MPEG 4 decoder Windows Accessories not included AXIS 292 Network Video Decoder AXIS MPEG 4 Decoder 10 user license pack Approvals AXIS AXIS 282 AXIS 282A is delivered as a component for the sole purpose of being integrated into a product or syst...

Page 69: ...ssing both Motion JPEG and MPEG 4 video streams simultaneously Frame rate and bandwidth affected Heavy usage of event settings affects the CPU load Frame rate affected Enabled motion detection Frame rate and bandwidth affected Heavy network utilization due to poor infrastructure Bandwidth affected Viewing on poorly performing client PC lowers perceived performance Frame rate affected Access by lar...

Page 70: ...ams from the AXIS 282 AXIS 282A using a compression level of 50 Note that these values are guidelines only actual values may vary Frame rates MPEG 4 The following test results show the frame rates in frames second fps for MPEG 4 streams from the AXIS 282 AXIS 282A Note that these values are guidelines only actual values may vary The MPEG 4 test conditions Compression level 50 Video Object Type Adv...

Page 71: ...o Server the audio settings There are also factors in the monitored scene that will affect the bandwidth These are the amount of motion the image s complexity the lighting conditions For MPEG 4 if there is only limited bandwidth available and if this is more important than the image quality using a constant bit rate CBR is recommended Use a variable bit rate VBR if the image quality needs to be ma...

Page 72: ...64 kbps channel It is a pulse code modulation PCM scheme operating at 8 kHz sample rate G 726 Frequently used speech compression algorithm in telecommunications due to its high perceived speech quality and low resource requirements Half duplex A half duplex link communicates in one direction at a time only much like a walkie talkie Two way communication is possible but not simultaneously HTTP Hype...

Page 73: ...an IP address belongs Switch Whilst a simple hub transmits all data to all devices connected to it a switch only transmits the data to the device it is specifically intended for TCP IP Transmission Control Protocol Internet Protocol A suite of network protocols that determine how data is transmitted TCP IP is used on many networks including the Internet TCP keeps track of the individual packets of...

Page 74: ...51 Default viewer 35 DIP switch 9 DNS configuration 52 E Email server 54 Emergency recovery 62 Event servers 37 Event types 37 External video 36 External video sources 16 F Factory default settings 57 Frame rates 25 70 FTP server 37 Full duplex 29 30 H Half duplex 29 30 Host name 52 HTML examples 36 HTTP API 34 45 HTTP port number 53 HTTP server 37 HTTP API 22 HTTPS 50 I I O Ports 55 I O terminal ...

Page 75: ...alk 30 Q Quad stream 28 R Recovery 62 Referrals 49 Relative and absolute PTZ drivers 44 Restart 55 Restore 55 RTP 19 54 RTSP 19 53 S Scheduled event 37 Security 49 Sequence mode 16 36 Services 51 Set the IP address 10 Simplex 29 SMTP settings 54 Snapshot 17 SOCKS server 53 Specifications 66 Streaming MPEG 4 20 Support 56 Synchronization 22 System options 49 T TCP server 37 TCP IP settings 51 Trigg...

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