During the production of my film trailer, I have found out that some footages were out of focus or blurry due to quick movements of the camera. With the result of this I concluded a research to see if there was a solution to this problem. I found out it is called Rolling Shutter Distortion and to edit a video clip to reduce its distortion, iMovie can be used by using its Rolling Shutter feature. This is a very helpful tool as it saves time from having to reshoot an entire shot, especially for this low-budgeting film trailer. However, if the quality of the clip is honestly bad you will have to reconsider a reshoot it to produce the highest quality film trailer. To do this, the following steps below needs to be followed:
1. In the movie timeline, select a clip by clicking on it to edit a blurry or distorted clip.
2. Click on the adjust button.
3. A adjustment bar will then be displayed above the viewer. To display the stabilisation options click on the shaky video button.
4. Select fix rolling shutter tick box. It will display as a red dash indicating that imovie is making this adjustment to the video clip. The length of the video depends on how long it'll take.
5. When iMovie is done applying the rolling shutter adjustment, the fix rolling shutter tick box will display a tick.
6. You can watch the preview of the clip that was adjusted in the viewer by hovering your mouse into the viewer. Playback options will then appear, click on the play button to play.
7. If you change your mind and want to remove the Rolling Shutter Adjustment. Click on Remove Stabilisation Adjustment button.
Source is taken from:
http://www.informit.com/articles/article.aspx?p=2191412&seqNum=3
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