User Manual
Table Of Contents
- Software Installation on page 10
- Revision History
- Overview
- Network Deployment
- Accessing the Network Camera
- Main Page
- Client Settings
- Configuration
- System > Homepage layout 
- System > Logs 
- System > Parameters 
- System > Maintenance
- Media > Image 
- Media > Video
- Media > Audio
- Network > General settings
- Network > Streaming protocols
- Network > QoS (Quality of Service)
- Network > SNMP (Simple Network Management Protocol)
- Network > FTP
- Security > User accounts
- Security > HTTPS (Hypertext Transfer Protocol over SSL)
- Security > Access List 
- Security > IEEE 802.1x
- PTZ > PTZ settings
- Event > Event settings 
- Applications > Motion detection
- Applications > Tampering detection
- Applications > Audio detection
- Applications > Package management - a.k.a., VADP (VIVOTEK Application Development Platform)
- Recording > Recording settings 
- Appendix
VIVOTEK
User's Manual - 61
Maximum bit rate: With the guaranteed image quality, you might still want to place a bit
rate limitation to control the size of video streams for bandwidth and storage concerns. The
congurable bit rate starts from 1Mbps to 40Mbps.
You may also manually enter a bit rate number by selecting the Customized option.
■
Video quality
Constant bit rate:
• Constant bit rate: A complex scene generally produces a larger file size, meaning that
higher bandwidth will be needed for data transmission. The bandwidth utilization is
congurable to match a selected level, resulting in mutable video quality performance. The
bit rates are selectable at the following rates: 20Kbps, 30Kbps, 40Kbps, 50Kbps, 64Kbps,
128Kbps, 256Kbps, 512Kbps, 768Kbps, 1Mbps, 2Mbps, 3Mbps, 4Mbps, 6Mbps, 8Mbps,
10Mbps, 12Mbps, 14Mbps, ~ to 32Mbps. You can also select Customize and manually
enter a value up to 40Mbps.
- Target bit rate: select a bit rate from the pull-down menu. The bit rate ranges from
20kbps to a maximum of 16Mbps. The bit rate then becomes the Average or Upper bound
bit rate number. The Network Camera will strive to deliver video streams around or within
the bit rate limitation you impose.
- Policy: If Frame Rate Priority is selected, the Network Camera will try to maintain the
frame rate per second performance, while the image quality will be compromised. If Image
quality priority is selected, the Network Camera may drop some video frames in order to
maintain image quality.
• Fixed quality: On the other hand, if Fixed quality is selected, all frames are transmitted
with the same quality; bandwidth utilization is therefore unpredictable. The video quality
can be adjusted to the following settings: Medium, Standard, Good, Detailed, and
Excellent. You can also select Customize and manually enter a value.
With the H.264 codec in an optimal scenario and when Dynamic Intra frame is combined with the
Smart Stream function, an 80% of bandwidth saving can be achieved compared with using H.264
without enabling these bandwidth-saving features.