Encoder - Datavideo HS-1600T-2C140TM Instruction Manual

Encoder

An NVS-31 video encoder enables video compression for digital video which will then be used for streaming
and recording. However, when choosing your encoding settings for streaming, you should first check your
available upload bandwidth. 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 combined audio and video bitrate should not
exceed 1Mbps.
The NVS-31 provides the user with two encoders so that you can stream and record videos with
different encode settings simultaneously. The Main Encoder and Sub Encoder can be used for
recording and streaming in four different combinations as shown in the table below:
Clicking the Encoder tab in the left column will open the Encoder Configuration page on the right as
shown in the diagram below.
The encoder parameters are described below:
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.
Recorder
Main Encoder
Main Encoder
Sub Encoder
Sub Encoder
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Streaming Server
Main Encoder
Sub Encoder
Main Encoder
Sub Encoder