ADOBE AFTER EFFECTS 7.0
User Guide
98
It is important to set the pixel aspect ratio for a footage file to its original ratio, not the ratio of the final output.
After Effects reads and writes pixel aspect ratios directly from QuickTime movies. For example, if you import a
movie captured as widescreen (16:9 DV), After Effects automatically tags it correctly.
See also
“Setting pixel aspect ratio for compositions” on page 113
Common pixel aspect ratios for assets
To set the pixel aspect ratio for imported footage
1 Select the footage in the Project panel.
2 Choose File > Interpret Footage > Main.
3 Choose a ratio from the Pixel Aspect Ratio menu and click OK.
If you are planning to render to the same pixel aspect ratio as your footage, you also need to set the pixel aspect ratio
for the composition.
About interlaced and noninterlaced video
Video can be either interlaced or noninterlaced.
Asset Pixel aspect ratio When to use
Square pixels 1.0 Your footage has a 640 x 480 or 648 x 486 frame size, is
1920 x 1080 HD (not HDV or DVCPRO HD), is 1280 x 720
HD or HDV, or was exported from an application that
doesn’t support nonsquare pixels. This setting can also
be appropriate for footagethat was transferred from film
or for customized projects.
D1/DV NTSC 0.9 Your footage has a 720 x 486 or 720 x 480 frame size, and
your desired result is a 4:3 frame aspect ratio.This setting
can also be appropriate for footage that was exported
from an application that works with nonsquare pixels,
such as a 3D animation application.
D1/DV NTSC Wide-
screen
1.2 Your footage has a 720 x 486 or 720 x 480 frame size, and
your desired result is a 16:9 frame aspect ratio.
D1/DV PAL 1.0666 Your footage has a 720 x 576 frame size, and your desired
result is a 4:3 frame aspect ratio.
D1/DV PAL Widescreen 1.422 Your footage has a 720 x 576 frame size, and your desired
result is a 16:9 frame aspect ratio.
Anamorphic 2:1 2.0 Your footage was shot using an anamorphic film lens, or
was anamorphically transferred from a film frame with a
2:1 aspect ratio.
HDV 1080/DVCPRO HD
720 (After Effects), HD
Anamorphic 1080
(Adobe Premiere Pro)
1.33 Your footage has a 1440 x 1080 or 960 x 720 frame size
and your desired result is a 16:9 frame aspect ratio.
DVCPRO HD 1080 (After
Effects only)
1.5 Your footage has a 1280 x 1080 frame size and your
desired result is a 16:9 frame aspect ratio.
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