Apple Compressor 3 - Manual (Page 315)

• Show Edit/Cut Markers: Controls whether markers automatically placed at each edit
point by another application, such as Final Cut Pro, are shown in the timeline. A
checkmark indicates they are shown.
• Set poster frame: Choose this item to make the current frame the poster frame. A poster
frame is a still image that represents a video or audio media file or a podcast chapter
in applications such as iTunes and the Finder. By default, the first frame in a video file
is the poster frame.
• Go to poster frame: Moves the playhead to the poster frame.
• Clear poster frame: Deletes the poster frame marker.
Previewing a Clip
You can preview either the original source media file or the file with a setting applied to
it. Source media files appear in the list as their filenames. Any settings that have been
applied to the source media file are listed immediately below the file’s name and are
indented to make it easier to identify them. Whether you choose to view the original
source media file or the source media file with a setting determines which options you
see in the Preview window.
Important: Settings you make in the Encoder pane and the Frame Controls pane cannot
be previewed. Only the settings made in the Filters pane and Geometry pane can be
previewed. See
Transcoding a Portion of the Clip with the Preview Window for an
alternative method of previewing Encoder pane and Frame Controls pane settings.
To preview a source media file
1 Open the Preview window.
Note: You can open your file into the Preview window in one step by double-clicking
the source media file in its job in the Batch window.
315 Chapter 26 Using the Preview Window