Table of Contents
Advertisement
Access Control System
Note:
1)
2)
3)
Bit Rate Type: Options include CBR and VBR, by which you can control
stream rate. CBR is fixed bit rate while VBR means the bit rate is adaptive
within the upper limit. CBR transfers stream by average bitrate with high
speed compressing, but there may be mosaic on the images; while VBR
adjusts bitrate automatically with slow compressing, but could ensure
image sharpness under complex conditions.
Image Quality: When selecting "VBR", select image quality level from the
dropdown list according to actual requirements. The higher the level is,
the clearer the image will look.
Frame Rate: Set the encoding frames per second. The higher the frame
rate is, the more bandwidth is required and the more storage it will take.
Average Bit Rate: Set the average bit rate for CBR.
Encoding Format: Select according to actual requirements, options
including H.264, H.265 and MJPEG.
Encoding Complexity: Select encoding complexity level according to
actual request. Under the same bitrate, the higher the complexity level is,
the better quality the image will have and the bandwidth it will require.
Max Key Frame Interval: Configure the interval frames between two key
frames, ranging 1 ~ 250. Suggest applying the default value 75. The
larger the value is, the less fluctuation of the stream there will be and the
worse the image will be, vice versa.
When the Bit Rate
Type
Bit Rate Upper Limit and you need to configure the value manually, ranging 64
~ 32768 (Kbps), by default 6144.
The parameter of Image Quality is enabled only when "VBR" is selected and it
will remain "Middle" when "CBR" is selected.
The higher the Encoding Complexity is, the more the stream will be
compressed. In this way it will relieve bandwidth restriction somehow, but
is "VBR", the parameter of Average Bit Rate will turn
User Manual
Advertisement
Table of Contents
