Manual
Table Of Contents
- Software Installation on page 10
- Overview
- Network Deployment
- Ready to Use
- Software Installation
- Accessing the Network Camera
- Using 3GPP-compatible Mobile Devices
- Using RTSP Players
- Using VIVOTEK Recording Software
- 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 > QoS (Quality of Service)
- Network > SNMP (Simple Network Management Protocol)
- Security > User Account
- Security > HTTPS (Hypertext Transfer Protocol over SSL)
- Security > Access List
- Security > IEEE 802.1x
- PTZ > PTZ settings
- Event > Event settings
- Applications > Motion detection
- Applications > DI and DO
- Applications > Tampering detection
- Applications > Audio detection
- Applications > Package management - a.k.a., VADP (VIVOTEK Application Development Platform)
- Recording > Recording settings
- Local storage > SD card management
- Local storage > Content management
- Appendix
VIVOTEK
User's Manual - 81
■ B
it rate control
Constrained 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 40Mbps. You can also select Customize and manually enter a value up to
40Mbps.
• - Target quality: Select a desired quality ranging from Medium to Excellent
- Maximum bit rate: select a bit rate from the pull-down menu. The bit rate ranges from
20kbps to a maximum of 40Mbps. 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.
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.
The Maximum bit rate setting in the Fixed quality conguration can ensure a reasonable
and limited use of network bandwidth. For example, in low light conditions where a Fixed
quality setting is applied, video packet sizes can tremendously increase when noises are
produced with electrical gains.
You may also manually enter a bit rate number by selecting the Customized option.