User guide

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What is XtremePreview?
What is XtremePreview?
When XtremePreview is enabled in the Matrox Advanced Settings dialog box,
as explained on page 50, you’ll be able to edit and preview numerous video and
graphics layers without having to render. In many cases, you’ll be able to preview
all sources (including multiple Matrox effects in any order) for the segment you
are editing, even if the segment requires rendering (that is, there is a red bar
above the time ruler on the Premiere Timeline). In addition, with XtremePreview,
many combinations of Matrox effects will remain realtime.
When playing back your project from the Timeline, segments that can’t be
previewed using XtremePreview appear as a “not yet rendered” (X) graphic.
Adaptive degradation
Certain complex effects or combinations of effects can cause dropped frames
when previewing. In these cases, XtremePreview performs an adaptive
degradation of the video playback by analyzing the segments and dropping
frames systematically. With each subsequent playback, that is, every time you
replay the clips during the same work session, the segment progressively
becomes smoother.
¦NoteOnce playback of the Timeline has stopped, a red bar will appear over the
segments that have dropped frames to indicate that these segments will require
rendering to perform a Matrox realtime export to disk or export to DV tape. If
you close your project before rendering, the red bar won’t re-appear until you
play your project again.
Automatic solo mode preview
In cases where it’s not possible to preview all the sources for a segment, solo
mode is automatically set once you enter the
Matrox Effect Setup dialog box
(that is, only the source for the effect you are editing is previewed). This can be
caused by your segment having one or more of the following characteristics:
• Too many video or graphics layers.
• An unsupported clip setting (such as one of Premiere’s field processing
options) or a Premiere software effect or non-realtime transition.
¦NoteTo avoid automatic solo mode, you can choose to ignore unsupported
clip settings or Premiere software effects when using XtremePreview, as
explained on page 53.
• More than four speed changes.
• More than one Matrox effect based on a pattern file (such as the Matrox
particle effect).
¥Tip To see the segment with all applied effects, you can use the render-scrub
feature (
ALT+drag the Positioner) in the Matrox Effect Setup dialog box.