Apple Motion 4 - Manual (Page 1370)

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Note: Photoshop export presets supports only a single-layer image, not multiple layers.
Exporting with Alpha Channels
To preserve areas of transparency in your project, you must export your project with an
alpha channel. The default QuickTime Movie preset—“Movie - current project and canvas
settings”—uses the Apple ProRes 4444 codec, which supports alpha channels. You can
also choose Lossless + Alpha Movie, which uses the Animation codec. This codec is usable
on any computer. In the Output pane of the Export dialog, you can choose whether the
alpha channel should premultiplied or straight. For more information about using alpha
channels, see
More About Alpha Channels .
Additionally, to export your project with a transparent background, make sure that
Background is set to Transparent in the Project Properties dialog (press Command-J to
open the Project Properties dialog).
Viewing Export Preset Settings
You can view extended descriptions of the export presets in Motion Preferences.
To view export preset settings in Motion Preferences
1 Choose Motion > Preferences, then click Presets.
2 In the Presets pane, choose Export Presets from the Show pop-up menu.
3 Click a preset in the list, and its settings appear in the Summary field at the right, along
with a brief description.
The preset selected in Motion Preferences is also displayed in the Export Options dialog.
Editing an Export Preset
You can edit an existing preset. When you edit an existing preset, you replace the original
preset settings with your changes (unless you rename the preset).
1370 Chapter 21 Outputting Motion Projects