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Video Bitrate
Keyframe Interval
The keyframe interval in video encoding determines how often complete frames, called
keyframes, are inserted into a video sequence. For live stream, a two-second keyframe
interval is optimal, so if your frame rate is 30 fps, the keyframe interval would be every 60
frames or 2 seconds.
Note: A short keyframe interval can result in stuttered playback.
Protocol
The NVS-32 offers the user two streaming protocols which are RTMP and SRT.
Please note that when streaming, the NVS-32 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-32 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 bitrate of the video specifies the amount of information
stored in the video. The higher the bitrate, the clearer the
video will be. 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 20Mbps
of upload speed available, your combined audio and video
bitrate should not exceed 10Mbps.
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