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Setup - Video & Audio Setup
Video Configuration
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GOP(Group of Pictures) Size -
Set up the number of frames (P-frame) which contain only changed information
based on the basic frame (I-frame). Regarding videos with lots of movement, if you set GOP size bigger, only
the number of P-frames is bigger.
As a result, the video resolution will be low but ‘File size’ and ‘Bit-rate can be decreased.
GOP(Group of Pictures) Size -
I-frame and P-frame can be created for MPEG4, H.264 and H.265 (HEVC) video compression. I-frame(=key-
frame) means the whole image data for one specific scene of the video. P-frame is image data that has been
changed information compared to I-frame GOP is made up of one I-frame and corresponding several
P-frames. To improve video quality, set the number of P-frames smaller, and to decrease image size, set the
number of P-frames bigger.
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Profile -
The profile defines the subset of bitstream features in H.264, H.265 (HEVC) stream, including color
reproduction and additional video compression.
H.264: Main, High / H.265 (HEVC): Main
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Bitrate Mode -
Select the bit rate control scheme of video compression from CBR (Constant Bit Rate) or VBR
(Variable Bit Rate).
This category will not appear if you select the codec.
Main -
An intermediate profile with a medium compression ratio. The main profile supports I-frames, P-frames, and B-frames.
High -
A complex profile with a high compression ratio. The high profile supports I-frames, P-frames, and B-frames.
CBR -
To guarantee the designated constant bit rate, the quality of the video is controlled in this mode.
Therefore, the quality of the video is likely to be varying when network traffic is changing.
VBR -
To guarantee the designated quality, the bit rate of the video stream is changed in this mode.
Therefore, the frame rate of the video is likely to be varying when network traffic is changing.
