User guide

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Problems, possible causes, and solutions
Using Adobe Premiere
Video file playback is jerky (dropping frames)
Possible cause 1 Wrong drive or system not powerful enough You may
not be using your A/V drive for playback, or your system is
not powerful enough for realtime video editing.
Solution 1 Check drive properties Make sure your A/V drives are
NTFS, and not compressed to save disk space. In Windows
Explorer, right-click the drive letter (such as D:), then
choose
Properties. Under General, make sure that
Compress drive to save disk space is not enabled.
Solution 2 Check settings for scratch disks In Adobe Premiere,
you can check your scratch disks by choosing
Edit >
Preferences > Scratch Disks and Device Control
. Be
sure to specify the appropriate A/V drive letter for
Captured Movies, Video Previews and Audio
Previews
. For more information, see “Setting up your
scratch disks” on page 42.
Solution 3 Use the Force render option or upgrade CPU Some of
the complex realtime Matrox effects, or certain
combinations of effects, may cause dropped frames during
playback. For those cases, do one of the following:
$ Use the Force render option to ensure smooth
playback without dropped frames. For more
information, see “Using common controls in the
plug-in” on page 84.
$ Upgrade to a faster CPU. You can monitor your CPU
usage by right-clicking on the Windows toolbar, and
choosing
Tas k Man a ger. On the Performance tab,
choose
Options and make sure that Always On Top
is selected. Double-click anywhere in the dialog box
to resize the
CPU Usage window. If your CPU usage
reaches and maintains 100% for too long while
playing back a segment of the Timeline, you will drop
frames.
Possible cause 2 Fragmented drive Your A/V drive may be fragmented.
Solution Defragment Try defragmenting your A/V drive. To
defragment a hard disk, choose
Start > Programs >
Accessories > System Tools > Disk Defragmenter
.
For more information on how to defragment your storage
devices, see your Windows documentation.