Vivotek FD6111V, FD6121V manual Video Codec Parameters

Page 48

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

- 44 -

www.vivotek.com

T: 886-2-82455282

F: 886-2-82455532

Image 48

Contents Page Technical@vivotek.com Sales@vivotek.com Before You Use This Product Package Contents Table of Contents Smtp FTP Appendix886-2-82455282 886-2-82455532 Hardware Installation Ethernet ConnectionMount the Camera 886-2-82455282 886-2-82455532 886-2-82455282 886-2-82455532 886-2-82455282 886-2-82455532 Software Installation 886-2-82455282 886-2-82455532 886-2-82455282 886-2-82455532 886-2-82455282 886-2-82455532 Initial Access to the Network Camera Installing Plug-inCheck Network Settings Add Password to Prevent Unauthorized AccessHow to Use AuthenticationPrimary User’s Capabilities Main Screen with Camera ViewConfiguration Camera viewClient Settings Both886-2-82455282 886-2-82455532 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 UsersDemo on Multiple Sites Mid-scale Service Product Demo for E-business Large-scale ServiceBuild a Multimedia Web Attraction Site 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 886-2-82455532 Definitions in Configuration System Parameters User Group Administration 886-2-82455282 886-2-82455532 Edit User Network Settings GeneralHttp Streaming886-2-82455282 886-2-82455532 Ddns & UPnP 886-2-82455282 886-2-82455532 Mail & FTP Smtp886-2-82455282 886-2-82455532 886-2-82455282 886-2-82455532 Video Codec Parameters 886-2-82455282 886-2-82455532 Image Settings Contrast, HueCamera Settings Audio 886-2-82455282 886-2-82455532 Motion Detection 886-2-82455282 886-2-82455532 Application Setup Weekly ScheduleEvent Operation Sequential Operation Naming rule of snapshot file FTP886-2-82455282 886-2-82455532 Factory Default Viewing System LogViewing System Parameters Troubleshooting AppendixFrequently Asked Questions 886-2-82455282 886-2-82455532 886-2-82455282 886-2-82455532 URL commands of Network Camera OverviewStyle convention General CGI URL syntax and parameters Get server parameter valuesMethod GET/POST Example request IP address and it’s response Set server parameter values NosyncWirelessNetwork Camera With Pan/Tilt/Zoom Available parameters on the serverSkip to invoke default server Yyyy/mm/ddHhmmss Blank 192.168.0.99 255.255.255.0Than 40 characters Mailto2 Text String 5003 5002120 384000 For Ntsc only8000 Save Directly save the adjust image Parameters Group CCD Ntsc & Cmos Application page CGI command Script.vssx886-2-82455282 886-2-82455532 Sun Resetdo Drive the digital outputQuery status of the digital input Query status of the digital output Capture single snapshot Account management System logs Privilege=dido&privilege=listenConfiguration file System Information886-2-82455282 886-2-82455532 Technical Specifications System AudioElectromagnetic Compatibility EMC