6.4.2 Video Profile
¾Name: To assign a name to the selected profile.
¾Video Type: Video codec of the selected profile.
¾Resolution: Shows the resolution of the selected profile.
¾ROI: Assign the selected profile as a ROI stream or not. (Only available for the profiles with max resolution)
¾Rate 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).
z For CBR, the video bit rate is between low to high bandwidth based on different resolutions. The user can set the desired bit rate to match the limitation of bandwidth.
z For VBR, the 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.
z 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
z For EVBR, the video bitrate is based on normal VBR mode. However, the bitrate can be limited to the max bitrate while lots of motion in video.
43
