LevelOne FCS-3021, User Manual

Page: 53 / 113

Audio and Video
This product supports dual-stream. It provides two setting for video streams, but only one setting
for audio.
Video Settings
“Video title”
The text string can be displayed on video
“Color”
Select either for color or monochrome video display.
“Power line frequency”
The fluorescent light will flash according to the power line frequency that
depends on local utility. Change the frequency setting to eliminate uncomfortable flash image
when the light source is only fluorescent light.
“Video orientation”
z
Flip:
Vertically rotate the video.
z
Mirror:
Horizontally rotate the video. Check options both if the Network Camera is installed
upside down.
“White balance”
Adjust the value for best color temperature.
“Maximum Exposure Time”
Adjust the maximum exposure time in different environment.
z
Overlay title and time stamp on video:
Check it the title is shown on video.
There are different video quality settings for stream1 and stream2.
z
Mode:
It can be MPEG-4 or JPEG. If MPEG-4 is selected, it is streamed in RTSP protocol. If
JPEG is selected, it is streamed in server push mode.
z
Frame size:
If the mode is MPEG-4, there are three options,
“176x144”, “320x240”
and
“640x480”
. If the mode is JPEG, there are three options,
“176x144”, “320x240”
and
“640x480”.
There are three dependent parameters provided in MPEG-4 mode for video performance
adjustment.
“Intra frame period”
The interval of intra frame.
“Maximum frame rate”
This limits the maximal refresh frame rate, which can be combined with
the
“Video quality”
to optimize bandwidth utilization and video quality. Choose “
Constant bit
rate
” If the user wants to fix the bandwidth utilization regardless of the video quality, choose
“Fixed quality”
and select the desired bandwidth. The video quality may be poor due to the
sending of maximal frame rate within the limited bandwidth when images are moving rapidly.
Consequently, to ensure detailed video quality (quantization rate) regardless of the network, it will
utilize more bandwidth to send the maximal frames when images change drastically.