Apple Compressor (4.0) Manual de usuario descargar pdf (Pagina 53)

Chapter 4 Assign settings and preview media 53

Preview a source media le

1 If the Preview window is not shown by default, open it by choosing Window > Preview.

Tip: To open your le in the Preview window in one step, double-click the source media le in its

job in the Batch window.

2 Do one of the following:

•

Choose a source media le from the Batch Item pop-up menu (identied by its lename).

A setting applied to the source

media file “Nancy at table CU

5.” The checkmark indicates

that this is currently being

viewed in the Preview window.

Selects the default

color bars image.

The original source

media file “Nancy

at table CU 5”

•

Click the Batch Item selection buttons until the source media le appears in the pop-up menu.

•

Select the source media le in its job in the Batch window.

Only the Source View button is active (the Setting View button is dimmed). This is because you

selected a regular source media le, so you can only see the unadulterated clip—without the

split-screen divider or cropping bars.

3 Choose a preview screen size from the Preview Scale pop-up menu, or drag the Preview window

handle to a size you like.

This doesn’t aect the display frame size of the actual output media le. That can be set only in

the Geometry pane of the Inspector window.

4 To preview the selected source media le, click the Play button.

Source media les with markers already added, such as les from Final Cut Pro, show the markers

in the timeline. You can manage the markers if needed. For more information, see Markers and

poster frames overview on page 46.

You can use the Preview window to play back Dolby Digital Professional (AC-3) les. Compressor

includes a Dolby Digital decoder so that when you add an AC-3 source media le to a batch and

play it, you can to hear it using your computer’s current speakers. This includes everything from

the built-in stereo speakers, which play a mixed-down version of the AC-3 le if it contains more

than two channels, to a set of external surround speakers connected to a USB or FireWire output.

Important: Because Compressor is decoding the Dolby Digital audio le, you cannot use your

computer’s optical output to preview Dolby Digital audio.

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Apple Compressor (4.0) Manual de usuario Pagina 53