Adobe Premiere Pro CS4 - Manual (Page 191)

185 USING ADOBE PREMIERE PRO CS4
Editing sequences and clips
Last updated 11/6/2011
Render Entire Work Area Renders the sections of the video tracks lying within the work area containing either a red
render bar or a yellow render bar.
Render Audio Renders a preview file for the sections of the audio tracks lying within the work area.
Note: You can set Adobe Premiere Pro to render the audio tracks whenever you render the video tracks. For more
information, see “
Render audio when rendering video ” on page 185.
The rendering time depends on your system resources and the complexity of the segment.
To maximize the quality of motion in rendered preview files, check the Maximum Render Quality option in Sequence
Settings. For more information, see “
General settings ” on page 135.
Render audio when rendering video
By default, Premiere Pro does not render audio tracks when you select either Sequence > Render Effects In Work Area,
or Sequence > Render Entire Work Area. However, playback may suffer when the data throughput of your disk drive
cannot sustain the flow when mixing multiple channels of audio and audio in a complex sequence. You can change
this default so that Premiere Pro automatically renders audio previews whenever it renders video previews.
1 Select Edit > Preferences > General (Windows) or Premiere Pro > Preferences > General (Mac OS).
2 Select or deselect Render Audio When Rendering Video.
3 Click OK.
Work with preview files
When you render previews, Premiere Pro creates files on your hard disk. These preview files contain the results of any
effects that Premiere Pro processed during a preview. If you preview the same work area more than once without
making any changes, Premiere Pro instantly plays back the preview files instead of processing the sequence again.
Premiere Pro stores the preview files in a folder you can specify. Similarly, preview files can save time when you export
the final video program by using the processed effects already stored.
Note: Adobe Media Encoder does not automatically use Premiere Pro preview files for encoding. To use Premiere Pro
preview files, select Use Preview Files in Adobe Media Encoder.
To further save time, Premiere Pro maintains existing preview files whenever possible. Preview files move along with
their associated segment of a sequence as you edit your project. When a segment of a sequence is changed, Premiere
Pro automatically trims the corresponding preview file, saving the remaining unchanged segment.
When completely done with a project, delete preview files to save disk space.
Specify the disk location for preview files
1 Choose Project > Project Settings > Scratch Disks.
2 For the Video Previews and Audio Previews menus, choose locations for video and audio preview files.
The disk you choose must be large and fast enough to support video playback, so choose a hard disk attached to your
computer, not a network drive. Also, because Premiere Pro must be able to locate the preview files when you open a
project, avoid specifying removable media.