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Keyframe and rendering options



Choose Project > Project Settings > Keyframe and Rendering to specify the following options:

Ignore Audio Effects Select to render audio without applied audio effects.

Ignore Video Effects Select to render video without applied video effects.

Ignore Audio Rubber Bands Select to render audio excluding changes made to the Timeline's rubberband controls for audio fading and audio panning.

Optimize Stills Select to use still images efficiently when rendering video. For example, if a still image has a duration of 2 seconds in a project set to 30 frames per second, Premiere will create one 2-second frame instead of 60 frames at 1/30 of a second. Deselect this option if the exported video file exhibits playback problems when displaying the still images. This option is determined by your preset. Some capture cards do not support optimized stills--if you are using a preset provided by your capture card, do not adjust this setting.

Frames Only at Markers Select when you want to render only the frames at which you have added a marker in the Timeline. This option does not affect compression keyframes.

Preview Choose To Screen when you want to preview edits, transitions, and effects but don't care if the preview is at final playback speed. When To Screen is selected, Premiere renders directly to the screen as quickly as possible. Playback speed depends on image size and resolution, the number and complexity of effects and transitions, and the processing speed of your system. This option is not recommended for previewing areas that include many effects. Choose From Disk when you want to preview edits, transitions, and effects at the final playback speed. With this option selected, Premiere renders the preview to the hard disk. Choose From RAM when you want to preview edits, transitions, and effects quickly, without having to first render a preview file. When From RAM is selected, Premiere creates a preview by displaying frames as they are rendered. Because frames are rendered in RAM, this process depends on the amount of RAM available. If sufficient RAM is not available or if the frame rate, frame size, or effects used require more RAM than is available, frames may be dropped during playback, or Premiere may render the preview to disk instead. To minimize the effects of limited RAM, use a smaller frame size (for example, 320 x 240 or 240 x 180). A smaller frame size also produces a more even frame rate during Preview to RAM. If you have chosen From RAM or To Screen, you can speed up previewing by choosing 1:2 or 1:4 to reduce resolution. Choose 1:1 for normal resolution. To preview with the selected option, choose Timeline > Preview or press Enter (Windows) or Return (Mac OS). To stop a preview, press the spacebar.

Field settings Select an option that matches the playback display. This option is set by your preset. If you use a preset provided by your capture card, do not change this setting. No Fields is the default and is the equivalent of progressive scan. Some DV cameras offer a "frame movie mode," which resembles progressive scan. If you shot your video using this mode, or if you're using video that is anything other than interlaced, use No Fields. Select Lower Field First for interlaced DV video to maximize motion smoothness. For analog video, select either Upper Field First or Lower Field First, depending on your capture card specifications, when your final output will be played back on a television monitor using an interlaced standard such as NTSC, PAL, or SECAM. Choosing the wrong field settings causes the video to flicker or appear jagged when rendered and played back on an NTSC monitor.

Some codecs support compression keyframes, which can increase the effectiveness of compression by acting as starting points for temporal compression. Temporal compression looks for ways to compact the description of the changes during a sequence of frames. It does this by looking for patterns and repetition over time. If the codec you specified supports compression keyframes, the following Keyframe Options are available:

Keyframe Every _ Frames Select and type the number of frames after which the codec will create a compression keyframe when exporting video.

Add Keyframes at Markers Select to create a compression keyframe at each marker.

Add Keyframes at Edits Select to create a compression keyframe between each clip.

For information on the Capture Settings dialog box, see Preparing for analog capture or Preparing for DV video capture.


Working with Projects > Specifying project settings > Keyframe and rendering options