Cisco Video Surveillance 3000 Series Configuration Manual page 35

Chapter 4 Feature Setup
Table 4-3
Option
Video Codec
Video Resolution
Maximum Frame Rate
Video Quality Control
Analog Video Area
Note
Enable Analog Video
Port
Audio Area
Enable Audio
Audio Codec
Audio Sampling Rate
OL-32285-01
Streaming Window Options (continued)
Description
Choose the codec for video transmission: H.264 or MJPEG. Both options are
supported on the primary and secondary streams.
Choose the resolution for video transmission. The resolutions in this
drop-down list depend on the video standard that you selected.
Choose the maximum frame rate of the video stream.
Choose an option for the video quality of the video stream from the IP
camera:
Constant Bit Rate—Available for the primary stream only. Specifies
•
that the video stream is output at or close to the constant bit rate that you
choose.
You can select one of the Mbps values in the drop-down menu. The
default value is 4 Mbps. A higher bit rate provides better video quality
but consumes more bandwidth.
You can also select the Customized option to enter a rate within the valid
range, depending on resolution and frame rate.
• Fixed Quality—Specifies that video is output at a fixed quality, which
ranges from Very High to Low. The bit rate may vary to maintain this
quality. The default fixed quality is Normal. A higher fixed quality
provides better video quality but consumes more bandwidth.
You can use these options to help manage bandwidth use in your network.
For example, if the IP camera is focused on an area with little movement,
such as an emergency exit, you can configure it with a low fixed quality.
This option applies to the primary stream only.
Check this check box if you want the IP camera to enable analog video for
installation purposes. To enable analog video, the following settings are
required:
The primary video stream frame rate must be set to 15 fps or lower.
•
The secondary video stream must be disabled.
•
Check this check box if you want to enable audio.
Choose the audio codec to use for encoding audio:
G.711 A-Law—Encodes 14-bit signed linear PCM samples to
•
logarithmic 8-bit samples.
G.711 u-Law—Encodes 13-bit signed linear PCM samples to
•
logarithmic 8-bit samples.
Note The G.711 A-law algorithm provides more quantization levels at
lower signal levels whereas the G.711 µ-law algorithm tends to give
more resolution to higher range signals.
Display only. Indicates the sampling rate of the audio stream from the IP
camera
Cisco Video Surveillance 3000 Series IP Camera Configuration Guide
Streaming Window
4-11