User Manual
Table Of Contents
- Overview
- Hardware Installation
- Accessing the Network Camera
- Main Page
- Client Settings
- Configuration
- System > General settings
- System > Homepage layout
- System > Logs
- System > Parameters
- System > Maintenance
- Media > Image
- Media > Video
- Media > Audio
- Network > General settings
- Network > Streaming protocols
- Network > DDNS
- Network > SNMP (Simple Network Management Protocol)
- Security > User Account
- Security > HTTPS (Hypertext Transfer Protocol over SSL)
- Security > Access List
- PTZ > PTZ settings
- Event > Event settings
- Applications > Motion detection
- Applications > DI and DO
- Applications > Audio detection
- Applications > Package management (VADP - VIVOTEK Application Development Platform)
- Recording > Recording settings
- Local storage > SD card management
- Local storage > Content management
- Appendix
VIVOTEK
70 - User's Manual
If JPEG mode is selected, the Network Camera sends consecutive JPEG images to the client, producing
a moving effect similar to a lmstrip. Every single JPEG image transmitted guarantees the same image
quality, which in turn comes at the expense of variable bandwidth usage. Because the media contents
are a combination of JPEG images, no audio data is transmitted to the client. There are three parameters
provided in MJPEG mode to control the video performance:
■ Frame size
You can set up different video resolution for different viewing devices. For example, set a smaller
frame size and lower bit rate for remote viewing on mobile phones and a larger video size and a higher
bit rate for live viewing on web browsers. Note that a larger frame size takes up more bandwidth.
■ Maximum frame rate
This limits the maximum refresh frame rate per second. Set the frame rate higher for smoother video
quality.
If the power line frequency is set to 50Hz, the frame rates are selectable from 1fps to 25fps If the
power line frequency is set to 60Hz, the frame rates are selectable from 1fps to 30fps. You can also
select Customize and manually enter a value. The frame rate will decrease if you select a higher
resolution.
■ Video quality
Refer to the previous page setting an average or upper bound threshold for controlling the bandwidth
consumed for transmitting motion jpegs. The conguration method is identical to that for H.264.
For Constant Bit Rate and other settings, refer to the previous page for details.
NOTE:
►
Video quality and xed quality refer to the compression rate. A lower value produces higher quality.
The higher the compression rate, the lower the quality.
►
Converting high-quality video signicantly increases the CPU load, and you may encounter streaming
disconnection or video loss while capturing a complicated scene. In the event of video loss, we
suggest you customize the video stream to a lower resolution or reduce the frame rate for a smoother
video.