Cisco Systems 2900 Manual De Usuario
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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
Compression Standards
•
JPEG—A commonly used video compression scheme, also known as MJPEG. JPEG has the least
impact on the camera’s processor, but it requires the most bandwidth.
impact on the camera’s processor, but it requires the most bandwidth.
•
MPEG-4—A full-motion video standard used by most DVD recorders. MPEG-4 is less
processor-intensive than JPEG, but it uses more bandwidth than H.264.
processor-intensive than JPEG, but it uses more bandwidth than H.264.
•
H.264—A new version of MPEG-4 compression used in high-definition video players such as
Blu-ray and HD-DVD. H.264 is the most processor-intensive, but it requires the least amount of
bandwidth.
Blu-ray and HD-DVD. H.264 is the most processor-intensive, but it requires the least amount of
bandwidth.
Image Rate and Bit Rate
The following tables show supported primary and secondary video stream combinations when using
H.264 or MJPAG compression on the primary stream:
H.264 or MJPAG compression on the primary stream:
•
—Supported video stream combinations when using H.264 compression on
the primary stream (NTSC)
•
—Supported video stream combinations when using MJPEG compression on
the primary stream (NTSC)
•
—Supported video stream combinations when using H.264 compression on
the primary stream (PAL)
•
—Supported video stream combinations when using MJPEG compression on
the primary stream (PAL)
Note
When you change any of the video stream configuration settings, the camera automatically adjusts the
bit rate. If you manually reduce the bit rate lower than the camera's automatic setting, the image quality
might be reduced and the stream selection options might be limited
bit rate. If you manually reduce the bit rate lower than the camera's automatic setting, the image quality
might be reduced and the stream selection options might be limited