4. Monitor the Image Section
AirLive IP-200PHD-24/IP-200PHD-24B
User’s Manual
48
ROI:
Assign the selected profile as a ROI stream or not.
Rate Control:
Defines the rate control method of this profile. There are four options: Constant
Bit Rate (CBR), Variable Bit Rate (VBR), Enhanced Constant Bit Rate (ECBR),
and Enhanced Variable Bit Rate (EVBR).
For CBR, the video bit rate is between low to high bandwidth based on
different resolutions. User can set the desired bit rate to match the limitation of
bandwidth.
For VBR, user should choose the quality level to set the video quality rather
than bit rate. The quality level is between 1 and 100. The higher value can
reach the better quality but of course will consume higher bandwidth.
For ECBR, the video bitrate is based on normal CBR mode. However, the
target bitrate can be increased to max target bitrate while lots of motion in
video. The max target bitrate will keep a pre-defined time period and then back
to normal CBR bitrate.
For EVBR, the video bitrate is based on normal VBR mode. However, the
target bitrate can be increased to max target bitrate while lots of motion in
video. The max target bitrate will keep a pre-defined time period and then back
to normal VBR mode.
Max Frame Rate:
Defines the targeted frame rate of this profile. For example, set the frame rate
to 15 fps, then the image will be updated for 15 frames per second as possible.
User need to set reasonable max frame rate versus video quality under the
limited bandwidth.
GOP Control:
Defines the Intra/Inter-frame (I/P) ratio of this profile. For example, set the
GOP to 30, then the video stream will have one Intra-frame every 30 frames.
4.5.3 ROI
ROI means Region of Interest. Use this page to specify ROI window which ROI
is QVGA resolution
.
