Project window.
3
4 16
9
Using Help | Contents | Index Back 100
Adobe Premiere Pro Help Capturing and Importing Source Clips
Using Help | Contents | Index Back 100
If you display rectangular pixels on a square-pixel monitor without alteration, images
appear distorted; for example, circles distort into ovals. However, when displayed on a
broadcast monitor, the images appear correctly proportioned because broadcast
monitors use rectangular pixels. Adobe Premiere Pro can display and output clips of
various pixel aspect ratios without distortion because it attempts to automatically
reconcile them with the pixel aspect ratio of your project. You may occasionally encounter
a distorted clip if Adobe Premiere Pro interprets pixel aspect ratio incorrectly; if this
happens, you can correct the distortion by manually specifying the source clip’s pixel
aspect ratio. See “Setting pixel aspect ratio” on page 101.
Pixel and frame aspect ratios
A.
Square pixels and 4:3 frame aspect ratio
B.
Nonsquare pixels and 4:3 frame aspect ratio
C.
Nonsquare pixels displayed uncorrected on a square-pixel monitor
Capturing or importing various aspect ratios
Adobe Premiere Pro attempts to automatically compensate for pixel aspect ratios and
preserve the frame size of imported images. The following list describes how Adobe
Premiere Pro treats images you import:
•
When you capture or import video with either the D1 resolution of 720 x 486 or the DV
resolution of 720 x 480, Adobe Premiere Pro automatically sets the pixel aspect ratio for
that file to D1/DV NTSC (0.9). When you import footage with the D1 or DV resolution of
720 x 576, Adobe Premiere Pro automatically sets the pixel aspect ratio for that file to
D1/DV PAL (1.067). However, it is always a good idea to make sure that all files are
interpreted
correctly by looking in the Project window or the File > Interpret Footage dialog
box.
•
Adobe Premiere Pro automatically assigns pixel aspect ratios to files using entries in the
file Interpretation Rules.txt, located in the Plug-ins folder inside the Adobe Premiere Pro
folder. If a specific type of image is consistently misinterpreted (distorted) when you
import it, you add or change the entries in this file using a text editor such as Notepad.
If you want to override the pixel aspect ratio interpretation for files already in a project,
use the File > Interpret Footage command (see “Setting pixel aspect ratio” on
page 101).
•
By default, Adobe Premiere Pro attempts to preserve the size of imported clips. If size
isn’t preserved upon import, the Scale Clips to Project Dimensions When Adding to
Sequence option may be turned on in the Project > Project Settings > General dialog
box (this option is off by default).
If you want to change the size of an imported clip in Adobe Premiere Pro and its pixel
aspect ratio is correct, select the clip and change the Scale property of the Motion effect.
The Motion effect is available when you view the Effect Controls window with the clip
selected in the Timeline window.
A B C
Using Help | Contents | Index Back 101
Adobe Premiere Pro Help Capturing and Importing Source Clips
Using Help | Contents | Index Back 101
Setting pixel aspect ratio
The preset you choose when you start a project sets the pixel aspect ratio for the project.
You can’t change the aspect ratio after it is initially set, but you can choose Project >
