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4.2 Video

The following descriptions show examples of some of the features available with V992D-N4.

4.2.1 Codec

This section allows you to choose the compression codec for each of the video streams.

Codec

H.264

This is a video compression standard that makes good use of bandwidth and could

provide high-quality video streams.

The H.264 standard provides the scope for a large range of different coding tools for use

by various applications in different situations, and the V992D-N4 provides certain

subsets of these tools.

Using H.264, it is also possible to control the bit rate, which in turn allows the amount of

bandwidth usage to be controlled. CBR (Constant Bit Rate) is used to achieve a specific

bit rate by varying the quality of the H.264 stream. While using VBR (Variable Bit Rate),

the quality of the video stream is kept as constant as possible, at the cost of a varying bit

rate.

Motion JPEG

This format uses standard JPEG still images in the video stream. These images then are

displayed and updated at a rate sufficient to create a stream that shows constantly

updated motion.

The Motion JPEG stream uses considerable amounts of bandwidth, but also provides

excellent image quality and access to every individual image contained in the stream.

Multiple clients accessing Motion JPEG streams could use different image settings.

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