User Guide

REFERENCE
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If the file is already compressed, you should select No Recompression.This will be
faster and will also avoid the loss of quality inherent in most recompression.
COMPRESSION QUALITY (0 TO 100)
Determines the final output quality. Usually, higher quality (close to 100)
means less compression and fewer visual artifacts.
KEY FRAMES EVERY
Some compression formats are based on key frames (sometimes called
temporal compression). A key frame is a frame that is usually less compressed.
Compressed frames that follow a key frame are smaller but slower to draw.This
option is only relevant to video streams.
A high number of key frames increases quality but decreases compression.Also,
if the number of key frames is very low, it will takes a long time to perform
decompression when drawing the video strip or moving randomly through
the file.
DATA RATE (KILOBYTES PER SECOND)
Determines the data rate that will be required to play the compressed stream
in real time. Lower data rates are less demanding on computer systems than
higher rates. If the data rate is too high for a certain computer (usually because
of a bottleneck such as a slow CD-ROM, network, or hard drive) the quality
begins to suffer and glitching can occur.
CONFIGURE
Press this button to set more detailed configuration parameters specific to the
compression scheme being used. Not all compressors provide this options.
PREVIEW
Press this button to view a preview of the final output.