Video Configuration - 3xLogic VISIX Gen III Series User Interface Manual

Setup - Video & Audio Setup

Video Configuration

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GOP(Group of Pictures) Size - Set up the number of p-frames (frames which contain only changed information based on the
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basic key frame or I-frame) in a GOP.
GOP(Group of Pictures) Size is..
I-frame and P-frame can be created for MPEG4, H.264 and H.265 (HEVC) video compression. I-frame(key-
frame) is essentilly the whole image with all captured data for one specific scene of video. A P-frame is a frame based on the
I-frame, but contains only data that is changed from the original I-frame. A GOP is made up of one I-frame and its corresponding
several P-frames. To improve video quality, set the number of P-frames lower and to decrease image size, set the number of
P-frames to a larger value.
Profile - The profile defines the subset of bit stream features in H.264, H.265 (HEVC) stream, including color reproduction and
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additional video compression.
H.264 : Main, High / H.265 (HEVC) : Main
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.
Bitrate Mode - Select the bit rate control scheme of video compression to CBR (Constant Bit Rate) or VBR (Variable Bit Rate).
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CBR - To guarantee the designated constant bit rate, the quality of video is controlled in this mode.
Therefore, the quality of video is likely to varying when network traffic is changing.
VBR - To guarantee the designated quality, the bit rate of video stream is changed in this mode.
Therefore, the frame rate of video is likely to varying when network traffic is changing.
This category will only appear for some codecs.
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