APPENDIX D
374
Troubleshooting
An object or other visual feature flickers during playback
Try the following:
•
First, open the source clip and step through it frame by frame. If you see the flickering in the
source clip, it was introduced when it was captured, before you worked with it in Premiere.
•
If you don’t see flickering in the source clip but you do see it in a clip you exported, try
changing settings in Premiere. For each clip in the Timeline that contains flickering objects,
select it and apply the Flicker Removal option; see “Processing interlaced video fields” on
page 162. Thin lines and type may flicker or be difficult to read when exported to videotape
because a television video frame is composed of two alternating fields. You can also prevent
flicker by designing video graphics that use line and type weights that are thick enough to
appear in at least two horizontal lines when the finished product is played on a television
monitor. If the flicker appears during motion, it is possible that the field dominance is set
incorrectly; see “Processing interlaced video fields” on page 162.
•
If you don’t see flickering in the source or exported clip, there may be a problem with the
overall hardware or software configuration.
Previewing, playback, or exporting seem slow
Do the following:
•
Make sure the frame size is set correctly. The project frame size is set to 640 by 480 pixels
in Premiere by default. If you are editing a multimedia video or other project where the final
frame size will be smaller than 640 by 480 pixels, specify a smaller frame size in the Video
Settings panel in the Project Settings dialog box (for playback) or Export Settings (for export).
Even if your final frame size is 640 by 480 or larger, specifying a frame size smaller than your
final size can speed processing of preview files. When you play back or export the final version,
remember to specify the final frame size in Project Settings or Export Settings. Be aware that
when output settings change, preview files must be recalculated.
c00.book for PS Page 374 Tuesday, March 31, 1998 1:28 PM
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