User Guide

Second/I-Frames: The Second / I-frames field displays the number of seconds that
separate I-frames.All frames in between I-frames are called delta frames. Delta
frames contain only the information used to display change, and are
considerably smaller than I-frames; however, the visual quality of delta frames
is poor. As I-frames get farther apart, the size of the video (in bytes) gets
smaller. As I-frames get closer together, the size of the video (in bytes) gets
larger, and the computer’s coprocessor must work harder.
Pixel Format: The Pixel Format field displays the color depth standard that has been
selected.The video card that the computer is using to receive the video source
has certain color standards that it can display best, for example, RGBH = 64k
thousand colors and RGBT = 16 million colors. For information about which
pixel format your card works best with, see the video card’s documentation.
The pixel format is set automatically for the preferred video cards when you
select one of the template stream formats.
Delay Buffer: The Delay Buffer is the amount of video coming in from the video
card (measured in seconds) that NetShow Encoder stores before it starts
transmitting ASF information. Five seconds is the default; it allows enough
information to build up so that the client doesn’t have to wait (that is, buffer
information), and so the NetShow Encoder computer’s memory isn’t
overloaded with delayed ASF information. Increasing the Delay Buffer can
overload the NetShow Encoder computer’s memory, and affect the computer’s
ability to encode information. Decreasing the Delay Buffer, in some
circumstances, can cause clients to wait on NetShow Encoder.
Scalable Video: Placing a check in the Scalable Video checkbox creates multiple
content streams within one encoded .asf file. The streams are encoded at
different target bandwidth to allow a player to render content when network
bandwidth is reduced. Using scalable video requires an encoding platform that
has at least a Pentium II processor running at 266 megahertz(MHz). Scalable
video content can only be accurately decoded by NetShow Player 3.0 and
NetShow Server 3.0.
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