4XEM IPCAMWFD 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 efficiency in the multi-user environment when running in the low bandwidth environment. But it will cause each connection slow a few minutes when connection

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Contents Page Page Before You Use This Product Package Contents Table of Contents Smtp FTP AppendixPage Hardware Installation Ethernet ConnectionMount the Camera Page Page Page Software Installation Page Page Page 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 BothPage Administrator’s Capabilities Fine-tuning for Best PerformanceFor Best Real-time Video Images Somewhere Between Real-time and Clear ImagesOnly Quality Images Will Do Select for Motion Jpeg Protect Network Camera by Passwords Opening Accounts for New UsersIf the web space has FTP service Demo on Multiple Sites Mid-scale ServiceProduct Demo for E-business Large-scale Service Build a Multimedia Web Attraction SitePage If the web space has no FTP service Image URL Send Snapshots When Motion is Detected Build a Security ApplicationPage Definitions in Configuration System Parameters User Group Administration Page Edit User Network Settings GeneralStreaming Ddns & UPnP Page Mail & FTP SmtpPage Page Video Codec Parameters Page Image Settings Contrast Hue SaturationCamera Settings Audio Page Motion Detection Weekly Schedule Application SetupEvent Operation Sequential Operation Naming rule of snapshot file FTPPage Viewing System Log Factory DefaultViewing System Parameters Troubleshooting AppendixFrequently Asked Questions Page Page Overview URL commands of Network CameraStyle convention Get server parameter values General CGI URL syntax and parametersMethod GET/POST Set server parameter values Parameter pairParameter pair Available parameters on the server WirelessNetwork Camera With Pan/Tilt/ZoomSkip to invoke default server Yyyy/mm/ddNTP 192.168.0.99 Group Security255.255.255.0 Dns1 IP address Primary DNS server 5003 5002384000 120For Ntsc only 8000 Save Directly save the adjust image Parameters Group CCD Ntsc & Cmos Script.vssx Application page CGI command Sun Dihigh Drive the digital output Query status of the digital inputQuery status of the digital output Capture single snapshot Account management EditSystem logs Privilege=dido&privilege=listenConfiguration file System InformationPage Preset Locations Technical Specifications Networking
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