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Note also that multiple clients accessing Motion JPEG streams could use different image
settings.
H.264
This is a video compression standard that makes good use of bandwidth and could provide
high-quality video streams at less than 1 Mbit/s.
The H.264 standard provides the scope for a large range of different coding tools for use
by various applications in different situations, and the GANZ ZN-Cx provides certain
subsets of these tools.
Using H.264, it is also possible to control the bit rate, which in turn allows the amount of
bandwidth usage to be controlled. CBR (Constant Bit Rate) is used to achieve a specific bit
rate by varying the quality of the H.264 stream. While using VBR (Variable Bit Rate), the
quality of the video stream is kept as constant as possible, at the cost of a varying bit rate.
Codec
H.264 or MJPEG
Size
Output resolution. See the next page for the output resolution table.
Frame rate
2.5~30fps in normal mode.
1~30fps in slow shutter mode.
If the slow shutter mode is turned on and the low light condition is met, the frame rate
automatically goes down. In this case, the frame is half of the normal mode.
Bit-rate control
CBR/VBR
For H.264, if there is only limited bandwidth available, and if this is more important than
the image quality, using a constant bit rate (CBR) is recommended. Use a variable bit
rate (VBR) when the image quality needs to be maintained at a higher level. In case it is
supported on the network; consider also using H.264 multicasting, as the bandwidth
consumption will be much lower.
Average Bit-rate
512Kbps ~ 8Mbps
Recommended bit rate for VGA (640x480): 800Kbps ~ 1Mbps
Recommended bit rate for 720p (1280x720): 3Mbps ~ 4Mbps
Recommended bit rate for 1080p (1920x1080): 6Mbps ~ 8Mbps
Anti-Flicker mode (Flicker less mode)
60Hz: NTSC
50Hz: PAL or flicker-free mode.
To use the camera in locations lit by fluorescent lighting, try adjusting the Flicker-free
exposure setting so the Exposure control is set to
Flicker-free
.
