Intellinet Network Solutions INT-PSNC-UM-1106-06 user manual Rate Control, Quality, Bit Rate

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6.2 Image Configuration

6.2.1 MPEG4 CCD Cameras, Dome Cameras and Network Video Server

Rate Control

The bit rate used in video encoding has a direct impact on the video quality and the bandwidth used to stream video over the network. As opposed to constant bit rate (CBR), VBR files vary the amount of output data per time segment. VBR allows a higher bit rate (and therefore more storage space) to be allocated to the more complex segments of media files while less space is allocated to less complex segments. The advantages of VBR are that it produces a better quality-to-space ratio compared to a CBR file of the same size. The bits available are used more flexibly to encode the sound or video data more accurately, with fewer bits used in less demanding passages and more bits used in difficult-to-encode passages.

CBR is the best option, if you have to limit the bandwidth available to the camera; e.g., in order to save valuable bandwidth in busy networks.

Quality

This option is available when selecting the VBR rate control. Define the quality of the video output by assigning a value ranging from "1" = best quality to "31" = worst quality. Good values are 4 or 5, as they provide a good image quality at a relatively low network bandwidth usage.

Bit Rate

Set the target bit rate of the encoding video. This option is available in CBR mode only. You can set the bit rate values from 30 kbps up to 9000 kbps at an interval of 300 kbps. A higher bit rate ensures higher quality of the live video at the expense of more network bandwidth usage.

Controlling the maximum bit rate is good for controlling the bandwidth used by the MPEG4 video stream. As the bit rate is fixed, the frame rate and image quality can be affected adversely. The image quality can be reduced if complex image material requires more bandwidth than allowed by the bit rate settings.

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Contents INT-PSNC-UM-1106-06 PRO SeriesTable of Contents Safety Electromagnetic Compatibility EMCRadio Transmission Regulatory Information Video Standard and Product Classification Important NoticesMain Features and Benefits Product OverviewAbout the Pro Series Network Cameras and Video Servers Physical Description Package ContentsOperating Status LED Power LED MPEG4 CCD and Cmos Camera Front ViewRear View MPEG4 CCD IR Camera Video Input Video Output On Air Network LED Power Connector EthernetReset Speaker Out Network Video ServerVari-focal lens 4-9 mm Vandal Proof Dome Camera Front ViewDome Glass Tamper-proof screwsJpeg Cmos Camera 550710 Front/Top View Image Capture LEDNetwork Activity LED Power Connector Installation Summary and ExamplesNetwork Connector RS232 ConnectorPage Connecting the Camera to a PC Assigning an IP Address and Accessing the Camera’s HomepageSetting up the IP Address Using IP Installer Starting the Web Browser Accessing the Camera’s HomepageMS Internet Explorer MPEG4 Stream Mode Behind a Firewall Username and PasswordActiveX Installation for MS Explorer Users automatic Page Homepage Options MPEG4 Cameras Video Size AudioSave Snapshot Logout Administrator MenuInstall XviD Record VideoShow Only Image Homepage Options Jpeg Cmos CameraExpansion Frame rateAdjusting the Camera Lens Adjusting the FocusReplacing the Lens Overview of the Administration Menu Administrator MenuRate Control QualityBit Rate Page Vertical Flip and Horizontal Flip ResolutionDisplay Name/Location Stamp Display Time/Date StampDe-Interlace BrightnessContrast Color Killer Load Default ValuesHue SaturationAuto White Balance MPEG4 Cmos CamerasAuto Exposure Minimum Image Sensor RateImage Size Brightness ModeJpeg Cmos Camera Compression RateIndoor / Outdoor Exposure ModeBack Light Further Reduce Exposure TimePage Send an IP address to Email Upgrade Port NumberSet IP address, Subnet Mask, Gateway Address Set DhcpRtsp Port Number Use Smtp AuthenticationID, Password Ddns Manual UpdateJpeg Cmos Camera PTZ Only Digital PTZ Camera models PasswordMaximum Frame Rate AuthorityJpeg Cmos Camera Trigger Condition Event Trigger ConfigurationTop Middle Bottom Left Right MiddleMiddle Before event Image Capture OptionImage Capture option limitation Jpeg Cmos Camera Camera Name System ConfigurationOperation Mode and Output Stream Type Direct Public Access to Image via HttpLED On/Off Image File NameAudio On/Off Video On/OffPage Wireless Configuration for wireless cameras only Wireless SetupWireless Security Settings Page WPA & WPA2 personal Ad hoc Mode Infrastructure ModePoE Power over Ethernet Support Power over Ethernet PoE InjectorPoE Midspan PoE Office Switch PoE Web-Smart SwitchPower over Ethernet Injector Multi-Viewer Application for Windows InstallationConfiguration Adding a camera Camera InformationPage Setting up the camera in Etsp Client Etsp ClientGetting Started Click Add Define the location where Video should be saved Page Page Rtsp Playback in MPlayer for Windows Rtsp Video PlaybackPage Access to the camera via Https SSL Encryption / Access via HttpsPage MPEG4 Network Camera default values Remote Access to a Camera & Router SetupClick on NAT Virtual Server. Check x Enable Virtual Server Page Page MS Visual Studio C++, Visual Basic Developer InformationSoftware Development Kit SDK Web IntegrationDirect public access to image via Http Direct Access to internal JpegMotion-JPEG Access IP Installer does not find the camera. Why? Appendix a Frequently Asked Questions FAQSender e-mail address max characters Use Smtp Authentication How do I activate the FTP upload function? Camera does not send any e-mails. Why?Short Why won’t the ActiveX control automatically download?Page Appendix B Accessing the camera via HyperTerminal Configure the parameters as shown below All MPEG4 models Ping reply Interpretation and recommendation Appendix C TroubleshootingSymptoms Possible causes Remedial actions PINGing Your IP addressHub-to-hub cable Appendix D Utilizing IP Addresses on a Local Network Page Download New Firmware Install New Firmware Appendix E Updating FirmwareIdentify the Version of Firmware Appendix F The I/O Connector MPEG4 Cameras Function DescriptionPIN Appendix G Dynamic Domain Name System Ddns How to Use the DynDNS Ddns ServerPage Page Page Ddns Registration for the Pro Series Network Camera Factory default settings Appendix H Reinstating the Factory Default SettingsPressing the Reset Button Using HyperTerminalAppendix I Glossary of Terms Page Pro Series Network Camera Appendix J Product SpecificationsMPEG4, CCD, Day/Night, Ntsc Pro Series Wireless Network Camera Pro Series Wireless Network Camera MPEG4, CCD, Day/Night, IR Lens, PAL Pro Series Night Vision Network Camera100 Pro Series Wireless Night Vision Network Camera 102 MPEG4 + M-JPEG Dual Mode, 2.0 Megapixel CMOS, PAL/NTSC Pro Series Digital PTZ Network CameraPro Series Digital PTZ Wireless Network Camera MPEG4 + M-JPEG Dual Mode, Two-way Audio, PAL/NTSC Pro Series Network Video ServerJPEG, CMOS, PAL/NTSC 107 108