Datavideo NVS-35, Instruction Manual

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Kuaishou
This is designed specifically for a streaming platform in China.
Please note that when streaming, the NVS-35 converts video into data, which are
sent across an IP network. High bitrates consume more bandwidth across the IP
network. In a gigabit office LAN, high bitrate may not be a concern and
Speed/Bandwidth is therefore not a limitation in an NVS-35 application environment.
If your available bandwidth is limited, you should reduce both your resolution and
your bitrate accordingly. A good rule of thumb is for the bitrate of your stream to use
no more than 50% of your available upload bandwidth capacity on a dedicated line.
For example, if the result you get from a speed test shows that you have 2Mbps of
upload speed available, your video bitrate should not exceed 1Mbps.
Resolution
The first step of encoder setup is to adjust the image size. It is best to either match
your original video source or scale it down. For example, capture at HD 720 and
stream at HD 720, or capture at HD 720 and stream at 540 (high).
You should never be scaling up and streaming at a higher resolution than your
original video source. For example, it does not make sense to capture at 720 and
stream at 1080. Note that you will also have no gain in quality and you are using
more bandwidth than is necessary for your viewers.
You should also be aware that higher resolutions require greater processing power
to encode the stream. Attempting too high of a resolution on too little processing
power can result in degraded image quality and corrupted or interrupted streams or
recordings.
Resolutions available for the stream encoder are listed as follows:

1920x1080

1280x720

720x576

720x480

640x480

320x240