Datavideo EPB-1340 Instruction Manual page 45

Video Bitrate (bps)
The bitrate of the video specifies the amount of information stored in the video. The higher the bitrate is,
the clearer the video is.
The bitrate ranges from 256K to 16M as shown in the table below.
 16 M
 12 M
 8 M
 6 M
 4 M
 3 M
 2.5 M
 2 M
 1.5 M
 1 M
 512 K
 256 K
For example, SD video may appear acceptable at 1000 Kbps (1M) but HD video is unacceptable at 1000
Kbps. Recommendations of the video bitrate settings are outlined as follows:
 When NVS-31 is in record-only mode, the recommended video bitrate is 16 Mbps.
 When NVS-31 is in stream-only mode, the recommended video bitrate is 10 Mbps.
 When NVS-31 streams and records simultaneously, sum of the stream and record video bitrates
should not exceed 12Mbps.
When streaming, the NVS-31 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 the limitation in a NVS-31 application environment.
Audio Bitrate (bps)
Select the bit rate at which you want to stream or record the audio.
 384 K
 256 K
 128 K
 64 K
 32 K
GOP
GOP pattern with longer GOP length encodes video very efficiently. Shorter GOP lengths usually work
better with video that has quick movements, but they do not compress the data rate as much. On the NVS-
31, there are 16 GOP sizes available for the user, ranging from 1 to 180.
 180
 160
 140
 120
 100
 60
 50
 30
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