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Cisco Video Surveillance IP PTZ Dome Camera User Guide, Cisco 2900 Series IP Dome
OL-24281-01
Chapter 2 Operation
A/V Streams Tab
I-Frame Interval
The I-frame interval configures the number of partial frames that occur between full frames in the video
stream. For example, in a scene where a door opens and a person walks through, only the movements of
the door and the person are stored by the video encoder. The stationary background that occurs in the
previous partial frames is not encoded, because no changes occurred in that part of the scene. The
stationary background is only encoded in the full frames. Partial frames improve video compression rates
by reducing the size of the video. As the I-frame interval increases, the number of partial frames
increases between full frames. Higher values are only recommended on networks with high reliability.
This setting is only available with H.264 and MPEG-4 compression standards.
Quality of Service for Differentiated Services Code Point
Quality of Service (QoS) for Differentiated Services Code Point (DSCP) is a code that allows the
network to prioritize the transmission of different types of data. This setting is only available with H.264
and MPEG-4 compression standards.
Note • If you are not familiar with DSCP, contact your network administrator before changing this setting.
• Your network must be configured to use QoS. If you are unsure if your network is QoS-aware,
contact your network administrator.
Advanced Sharpening
The Advanced Sharpening setting enhances picture detail by sharpening the edges in the picture. When
this mode is enabled, there is a trade-off between image quality and the resources required for processing
power. The maximum camera resolution and image rate will not be available, but the edges of the image
seem sharper. Only use this setting if you cannot achieve the sharpness level you want by adjusting the
digital processing settings of the camera. The default setting for Advanced Sharpening is Off.
Selecting the Audio Configuration Settings
Note Audio is not supported when using the camera with Cisco Video Surveillance Manager (VSM).
CIF
2.5 FPS @ 256 kbps
CIF 2.5 256 CIF 2.5 256
CIF
1 FPS @ 128 kbps
CIF 1 128 CIF 1 128
Table 2-6 Supported Stream Combinations when using MJPEG Compression on Primary Stream (PAL) (continued)
Primary Stream using
H.264 Encoding
Secondary Stream: H.264 Secondary Stream: MJPEG
Resolution
Frame Rate
(FPS) Bit Rate (kbps) Resolution
Frame Rate
(FPS) Bit Rate (kbps)