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3.6. Modifying Video Advanced Settings
To change the video advanced settings, click on the "Advanced" button in Video page.
Enter the following settings:
IP Ratio: Type the IP Ratio that needs to be set for the codec, default value is 30.This means
once every 30 frames, one I frame will be inserted. Value range from 1 to 30.
Force I Frame: By checking this box, it will enable that particular stream to insert I frame at that
instant. Once I frame is inserted, this flag has no significance. In GUI, this will show as checked
if selected to show the user the last setting.
Encode Preset: Following Encoding Preset are supported
Auto: This will automatically set the value based on the codec combo used for best tradeoff
with performance and quality
SVC: This will enable SVC mode of encoding with RTSP streaming on ports 8601, 8602,
8603, 8604 enabled.
Custom: This will enable custom preset based on the codec used.
For H.264, this will enable legacy version codec used in IPNC release 1.5
For MPEG4, this switches all the tools and put the codec to maximum quality. Tools
enabled are intra Algo, UMV, SkipMB and ME is put to High Quality mode.
Note:
To use Custom mode, user need to have a good knowledge of Codec setting and its
implications
Packet Size: The percentage value entered will split the frame into slices and the packet header
will be introduced at slice boundaries. Please refer to codec datasheet supplied along with the
release.
QP Value: Following options are supported
Init:
Value with which codec starts encoding the MacroBlocks. When Rate Control is in
OFF position, this value will be used to encode all the frames.
Min: Minimum Value of QP with which codec encodes the MacroBlocks.