Добавил:
Upload Опубликованный материал нарушает ваши авторские права? Сообщите нам.
Вуз: Предмет: Файл:
premierepro_cs5_help.pdf
Скачиваний:
17
Добавлен:
13.02.2015
Размер:
22.6 Mб
Скачать

USING ADOBE PREMIERE PRO

68

Importing, transferring, capturing, and digitizing

Preparing still images before importing

Before you import a still image into Premiere Pro, prepare it as completely as possible to reduce rendering time. It’s usually easier and faster to prepare a file in its original application. Consider doing the following:

Make sure that the file format is supported by the operating system you plan to use.

Set the pixel dimensions to the resolution you will use in Premiere Pro. If you plan to scale the image over time, set image dimensions that provide enough detail at the largest size the image has in the project.

For best results, create files with a frame size at least as large as the frame size of the project so that you don’t have to scale up the image in Premiere Pro. Scaling an image larger than its original size can cause loss of sharpness. If you plan to scale up an image, prepare it at a larger frame size than the project’s. For example, if you plan to scale up an image 200%, prepare the image at double the project frame size before you import it.

Crop the parts of the image that you don’t want to be visible in Premiere Pro.

If you want to designate areas as transparent, create an alpha channel or use the transparency tools in applications such as Photoshop or Illustrator.

If final output will be shown on standard television screens, avoid using thin horizontal lines (such as 1-pixel lines) for images or text. These may flicker as a result of interlacing. If you must use thin lines, add a slight blur so that the lines appear in both video fields. See “Interlaced video, noninterlaced video, and progressive scanning” on page 309.

Save the file using the correct naming convention. For example, if you plan to import the file into Premiere Pro in Windows, use a three-character filename extension.

When you prepare still images in applications that support color management, such as Photoshop, colors may appear more consistent between the application and Premiere Pro if you prepare images in a video-friendly color space, such as sRGB or NTSC RGB.

More Help topics

Scale assets” on page 294

Importing Photoshop and Illustrator files

You can import files from Adobe Photoshop 3.0 or later, or from Adobe Illustrator. You can control how layered files are imported. Empty (transparent) areas of nonflattened files are transparent when imported into Premiere Pro, because the transparency is stored as an alpha channel. This lets you import graphics and superimpose them over clips in other tracks with no extra effort.

You can import layered Photoshop files either with selected layers imported as individual clips into a bin, with selected layers imported as individual clips into a bin and sequence, or with selected layers merged into a single video clip.

Also, you can import Photoshop files that contain video or animations if they are saved from Photoshop in timeline animation mode.

Note: Individual layers moved from a Photoshop composition into a Premiere Pro project may not behave as expected.

More Help topics

Working with Photoshop and Premiere Pro” on page 28

Create and edit Photoshop files” on page 30

Last updated 1/16/2012

USING ADOBE PREMIERE PRO

69

Importing, transferring, capturing, and digitizing

Import a layered Photoshop file

When you import a layered file saved in Photoshop file formats, you can choose how to import the layers in the Import Layered File dialog box.

Note: Some Photoshop layer attributes aren’t supported, such as special blending modes and the Knockout option. For best results, use basic transparency and opacity in Photoshop. Adobe Premiere Pro does support most Photoshop blending modes.

Premiere Pro imports attributes that were applied in the original file, including position, opacity, visibility, transparency (alpha channel), layer masks, adjustment layers, common layer effects, layer clipping paths, vector masks, and clipping groups. Photoshop exports a white background as opaque white, whereas it exports a checkerboard background as a transparent alpha channel when exporting to a format that supports alpha channels.

Importing layered Photoshop files makes it easy to use graphics created in Photoshop. When Premiere Pro imports Photoshop files as unmerged layers, each layer in the file becomes an individual clip in a bin. Each clip’s name consists of the layer name followed by the name of the file that contained it. Each layer is imported with the default duration you select for still images in Preferences.

You can import Photoshop files containing video or animations like any other Photoshop file. Since each layer is imported at the default still-image duration, the imported video or animation may play back at a speed different from that of its source in the Photoshop file. To make the speed match, change the still image default duration before importing the Photoshop file. For example, if the Photoshop animation was created at 30 fps and the Premiere Pro sequence frame rate is 30 fps, set the still image default duration in Premiere Pro to 30 frames in Preferences.

The options you select in the Import Layered File dialog box determine how the layers in the video or animation are interpreted on import into Premiere Pro.

From the Import dialog box, when you select a Photoshop file containing layers for import, the Import Photoshop Document dialog box opens. The Import As menu gives you these options for ways to import the file:

Merge All Layers Merges all layers, importing the file into Premiere Pro as a single flattened PSD clip.

Merged Layers Merges only the layers you select into Premiere Pro as a single, flattened, PSD clip.

Individual Layers Imports only the layers you select from the list into a bin containing one clip for each source layer.

Sequence Imports only the layers you select, each as a single clip. Premiere Pro also creates a sequence containing each clip on a separate track, and deposits all these into their own bin in the Project panel. Choosing Sequence allows you to select one of the following options from the Footage Dimensions menu:

Document Size Changes the frame size of the clips to match the frame size specified in the Sequence Settings dialog box.

Layer Size Matches the frame size of the clips to the frame size of their source layers in the Photoshop file.

Note: When you import one layer as a single clip, its name in the Project panel consists of the layer name followed by the original filename.

Importing Illustrator images

You can import an Adobe Illustrator still-image file directly into a Premiere Pro project. Premiere Pro converts pathbased Illustrator art into the pixel-based image format used by Premiere Pro, a process known as rasterization. Premiere Pro automatically anti-aliases, or smooths, edges of the Illustrator art. Premiere Pro also converts all empty areas into an alpha channel, so that empty areas become transparent.

If you want to define the dimensions of the Illustrator art when it is rasterized, use Illustrator to set crop marks in the Illustrator file. For information about setting crop marks, see Illustrator Help.

Last updated 1/16/2012

Соседние файлы в предмете [НЕСОРТИРОВАННОЕ]