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Output Preview

Output Preview shows how your video will appear when rendered in FCP
The lower left corner of the Output Preview shows the image size (in pixels) of the output that Final Cut Pro will render. The output size is determined by the size you set for the input sequence in Final Cut Pro.
The lower right corner shows the image size that is being displayed, and updates any time you adjust the window size.
The snapshot button in the lower center of the Output Preview provides a quick way to save a still image (PNG) of the current frame (e.g. to use as a thumbnail for your final video). After you press the snapshot button, Presto will open a file save dialog for you to specify where to save the image. By default the snapshots are automatically numbered as "Presto snapshot 1", "Presto snapshot 2", and so on. The resolution of the image is the same as the sequence frame size (with square pixels).
