X3

268 Managing video projects
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Number of buffers: Specify how many buffers should be used here. More
buffers increase stability for crackle-free playback of the arrangement, but
they also increase the memory requirement. When played via DirectSound,
only one buffer is used automatically.
Note: As a rule, if response and loading times are too slow, reduce the
number of buffers and their; otherwise, increase the buffer size if the audio
playback is choppy or if real-time errors occur. Since error-free playback is
usually more important than speedy reaction times, the buffer size should
be raised to 16384 or 32768 if dropouts occur. The possible number of
buffer updates is between 2 and 10.
Preview size: Specify the buffer size used to play the entire arrangement or
for previewing waves in the file manager.
Write real-time audio to wave file: If this option is active, the entire audio track
may be mixed live and recorded simultaneously. During playback, for
example mixer fades and effects may be controlled live and all real-time
activities are recorded and saved in a separate wave file.
MIDI playback
Specify which sound card or which MIDI interface should be used for MIDI
playback.
Video playback
Video cache size: The video cache ensures smooth on-screen playback for
files and effects by pre-loading them. The ideal setting depends on your
system; experiment to find the best playback performance on your system.
Arranger
Autoscroll during playback: If autoscroll is activated, the screen view
automatically shifts when the playback cursor reaches the right edge of the
screen, which is useful for longer arrangements. Select the size of the
scrolling steps: "Fast" (whole pages) or "Slow" (half pages).
Note: Scrolling requires constant recalculation of the screen view, which
may lead to interrupted playback if the amount of system RAM is too low. If
this happens, simply deactivate the autoscroll feature.
Display: update in background: The object display after move and zoom
operations in the arranger is updated in the background in order to allow
you to work smoothly.
Space bar behavior: Set whether stopping playback with the space bar
moves the playback marker to the current position or returns the marker to
its original position.