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305
Adobe Premiere Pro Help
Producing Final Video
Using Help
|
Contents
|
Index
Back
305
Frame Size
Specify the dimensions, in pixels, for video frames you export. Select 4:3
Aspect to constrain the frame size to the 4:3 aspect ratio used by conventional television.
Some codecs support specific frame sizes. Increasing the frame size displays more detail
but uses more disk space and requires more processing during playback.
Frame Rate
Choose the number of frames per second for video you export. Some codecs
support a specific set of frame rates. Increasing the frame rate may produce smoother
motion (depending on the original frame rates of the source clips) but uses more disk
space.
Pixel Aspect Ratio
Choose a pixel aspect ratio that matches the output type. When the
pixel aspect ratio (displayed in parentheses) doesn’t match 1.0, the output type uses
rectangular pixels. Because computers generally display pixels as squares, content using
nonsquare pixel aspect ratios will appear stretched when viewed on a computer but will
appear with the correct proportions when viewed on a video monitor.
Quality
Drag the slider or type a value to affect the picture quality of and disk space used
by exported video. If you are using the same codec to capture and export, and you’ve
rendered previews of a sequence, you can save rendering time by matching the export
quality setting with your original capture quality setting. Increasing quality above the
original capture quality does not increase quality, but may result in longer rendering
times.
Note:
The quality slider is not available for all codecs.
Limit Data Rate to _ K/Sec
Select (if available for the selected compressor) and type a
data rate to place an upper limit on the amount of video data produced by the exported
video when it is played back.
Note:
In some codecs, quality and data rate are interrelated, so that adjusting one option
automatically alters the other.
Recompress
Select to ensure that Adobe Premiere Pro exports a video file that is under
the data rate you specified. Choose Always from the Recompress menu to compress every
frame even if it is already within the data rate, or choose Maintain Data Rate to preserve
quality by compressing only the frames that are above the specified data rate. Recom-
pressing previously compressed frames may lower picture quality. Deselect Recompress
to prevent current compression settings from being applied to clips that were not altered
when you edited them into the program.
Audio export settings
When you choose Audio Settings from the menu at the top of the Export Movie Settings
dialog box, you can specify the following options:
Compressor
Specify the codec for Adobe Premiere Pro to apply when compressing
audio. The codecs available depend on the File Type you specified in the General panel in
the Export Settings dialog box. Some file types and capture cards support only uncom-
pressed audio, which has the highest quality, but uses more disk space. Check with your
capture card’s documentation before choosing an audio codec.
Sample Rate
Choose a higher rate for better audio quality in an exported file, or choose
a lower rate to reduce processing time and disk-space requirements. CD quality is 44.1
kHz. Resampling, or setting a different rate than the original audio, also requires additional
processing time; avoid resampling by capturing audio at the final rate.
