Asante Technologies Voyager II user manual Attachment B Bandwidth Estimation

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Attachment B: Bandwidth Estimation

Since the FPS is dependent on the bandwidth of the camera, the relation between the size of an image file and the bandwidth is always the major concern of the system construction engineer.

The table below shows the relation between the resolution and size of an MJPEG file in the NTSC system. Please note that the values in the table are for reference only, because the size of an image file is closely related to the complexity of the environment and the actual situation of the place being monitored.

Image Resolution	Average range of Data Sizes
176 x 122 (QCIF)	20	– 40k bit
352 x 240 (CIF)	40– 200k bit

640 x 480 (VGA)	180	– 400k bit
704 x 480 (D1)	200	– 530k bit

Ex.: The transmission speed on the Internet is 2fps under 352 x 240, i.e. 40k*2=80k to 200*2=400k per second. It is suggested to apply for a 512K "upload" bandwidth.

Note 1: What the camera needs at the client end is the “upload” bandwidth. However, most ISPs in Taiwan provide download bandwidth that is wider than the upload bandwidth. Therefore, symmetrical bandwidth is a good choice for users who need wider upload bandwidth. Ex. download/upload = 521K/512K

Note 2: 32 kbps to 64kbps are required for transmission of audit signals.

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Contents Voyager Ddns Packaging Contents System requirements LANIntroduction System Instructions Fixed on a wall Fig Fixed on a ceiling Fig MIC in/Audio Out Focus knob Hardware Installation Camera Setting MAC Factory default network identity of the machine Camera Setting from a Router Change the Internet Explorer Setting Enter the Main Setup prompt screen Camera Main DescriptionsControl panel Preset presets the rotation points for the camera 16 points Page Ato Selects a language Select an image size Select a video stream protocol Recording button Snapshot button Click the Path field to Select the folder to save File Basic Setting System settingBasic Setting System System info Basic Setting Video/Image Basic Setting Video Image Video ImageAdd a new link Video stream screen Select a video streaming format Select a FPS Basic Setting Video Image OSD Page Basic Setting Audio Sound Basic Setting Audio Audio sound settingBasic Setting UserUser Basic Setting User User List access privilege listBasic Setting User User Setting privilege setting Basic Setting Network Network setting Basic Setting Network Network wired network settingBasic Setting Network Wireless wireless network setting Page Network authentication type Encryption options HEX Basic Setting Network Streaming steaming setting Basic Setting Network PPPoE dial-up networking setting PPPoE setting Ddns setting Basic Setting Network UPnP Universal Plug and Play Open Windows firewall option Basic Setting Network Smtp Server mail server setting Basic Setting Network Samba Page Notification setting Basic Setting Date/Time date/time setting Basic Setting IP Filter Basic Setting IP Filter GeneralApplication Setting Event event trigger setting Application SettingApplication Setting Event Event List trigger event setting Add Event Add Event setting Page Page Add FTP setting Add Http setting Add TCP setting Application Setting Motion Detection Application Setting Firmware upgrade Page Application Setting Factory Default Resets all parametersFile backup Application Setting Reboot Attachment a External Alarm External Alarm I/O Circuit Diagram Image Resolution Average range of Data Sizes Attachment B Bandwidth EstimationAttachment C Troubleshooting and FAQs Question Answer and SolutionAccess to Camera FTP Camera Image Quality