Ismart C1100DN4, Руководство пользователя

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2.4 Video Encode
Set the Video encoding parameters as shown in figure 2.6.
There is only one resolution with the main stream. But there are five resolutions with sub stream. All the
encode format are H.264.
As we know, I frame is a key frame. I frame interval is too e, the quality of the video will be poorer
while the network is poor. So good network is a promise.
When the message of the video increase imminently and the bandwidth is fixed, you can choose VBR
(Bit rate Control), mosaic and shaking is the result when choose CBR. Fixed bandwidths first when
choose CVBR.
Larger frame rate means more fluent video. Smaller frame rate means slower image. 20 frames per
seconds is a best choose.
Figure2.6 Video Encode
Bit rate related to the speed of video transmission. The speed of D1 is at least 1000 kbps, but CIF is only
50.But when the resolution is 1080P, the “Bitrate” at least 6000 kbps and when the resolution is QVGA,
the “Bitrate” at least 300 kbps. The bit rate is too small result in poor image. Do not forget to save it!
2.5 Picture Capture
In the interface, “Picture Source”, “Picture Quality” and “Capture Speed” need to be set. Of course, the
default parameter is another way. As shown in figure 2.7