Vivotek PZ6112, PZ6122 manual Video Codec Parameters

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Video Codec Parameters

“Text on video” The text will be displayed in the black bar above the video window with a timestamp. The timestamp is captured from date and time of the Network Camera that is maintained by a built-in real-time clock.

“Color” Select either for color or monochrome video display.

"Size" There are five options for three video sizes. “Half” is the quarter size of “Normal” and “Normal” is the quarter size of “Double”. “Half x 2” has the same video size as “Normal” but of a lesser quality, while consuming less network bandwidth. “Normal x 2” has the same size as “Double” but of a lesser quality.

“Video codec type” It can be either MJPEG or MPEG4. In MJPEG mode, the video frames are independent. In MPEG4 mode, there are I frames and P frames. To decode a P frame need the information of previous frame. MPEG4 consumes much less network bandwidth than MJPEG.

There are five dependent parameters provided for video performance adjustment. "Maximum frame rate" This limits the maximal refresh frame rate, which can be combined with the "Video quality control" to optimize the bandwidth utilization and video quality. If the User wants to fix the bandwidth utilization regardless of the video quality, choose "Fix bit rate" and select the desired bandwidth. MPEG4 video are composed by I frames and P frames as the following sequence. IPPPPPIPPPPPIPPPP… “Key frame interval” determines how many repeated P frames will appear after one I frame. Large “Key frame interval” can reduce the bit rate, but cause image corrupt longer if there is packet loss while transmission. “Fix bit rate” option and “Key frame interval” option are only available in “MPEG4” mode. The video quality may be poor due to the sending of maximal frame rate within the limited bandwidth when images are moving rapidly. Consequently, to ensure detailed video quality (quantization rate) regardless of the network, it will utilize more bandwidth to send the maximal frames when images change drastically.

"Flip" Vertically rotate the video.

"Mirror" Horizontally rotate the video. Check options both if the Network Camera is installed upside down.

“Improve efficiency in the multi-user environment” Check this option to improve

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Contents Page Technical@vivotek.com Before You Use This Product Package Contents Table of Contents Definitions in Configuration Smtp FTPAppendix Hardware Installation To install in EthernetDI+ Software Installation 886-2-82455282 F 886-2-82455282 F 886-2-82455282 F Initial Access to the Network Camera Installing Plug-inCheck Network Settings Add Password to Prevent Unauthorized Access How to Use AuthenticationPrimary User’s Capabilities Main Screen with Camera ViewCamera view ConfigurationPan/tilt/zoom control buttons CCD control buttons Client Settings There are four settings for the client side886-2-82455282 F Administrator’s Capabilities Fine-tuning for Best PerformanceFor Best Real-time Video Images Only Quality Images Will DoSomewhere Between Real-time and Clear Images Select for Motion JpegProtect Network Camera by Passwords Opening Accounts for New UsersBuild a Multimedia Web Attraction Site Demo on Multiple Sites Mid-scale ServiceProduct Demo for E-business Large-scale Service More Flexible Options for ViewersIf the web space has FTP service If the web space has no FTP service Image URL Build a Security Application Send Snapshots When Motion is Detected 886-2-82455282 F Definitions in Configuration System Parameters User Group Administration 886-2-82455282 F Edit User General Network SettingsGet IP address automatically & Use fixed IP address Http StreamingDdns & UPnP 886-2-82455282 F Mail & FTP Smtp886-2-82455282 F 886-2-82455282 F Video Codec Parameters 886-2-82455282 F Image Settings CCD Settings 886-2-82455282 F 886-2-82455282 F Audio 886-2-82455282 F Motion Detection Camera Control Preset function areaCamera control area 886-2-82455282 F Camera control area Preset function area Weekly Schedule Application SetupEvent Operation Sequential Operation 886-2-82455282 F Viewing System Log Factory DefaultFactory default Viewing System ParametersRemote Controller Troubleshooting Appendix886-2-82455282 F 886-2-82455282 F 886-2-82455282 F Cleaning the Lens Pan/Tilt/Zoom DataURL Commands of the Network Camera Tilt speed Zoom timesOverview Style ConventionGet Server Parameter Values General CGI URL Syntax and ParametersMethod GET/POST Set Server Parameter Values Parameter pairAvailable Parameters on the Server NosyncTurn on automatic do restoration Resetip Enable to get ipaddress, subnet, router Wrestart Dns2 User name for primary FTP server, max MPEG4 Set maximum frame rate to 25 fps Ntsc & Cmos Your dynamic hostname Characters Usernameemail Auto iris Drive the Digital Output Query Status of the Digital Input ReturnCapture Single Snapshot Account Management Privilege=dido&privilege=listenSystem Logs Configuration File Upload File firmwareCamera Control Recall System Information Preset Locations Technical Specifications NetworkingElectromagnetic Compatibility EMC Liability
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