Adobe AFTER EFFECTS CS3 PROFESSIONAL User Manual page 72

See also
"Common pixel aspect ratios" on page 66
Change pixel aspect ratio for a footage item
1 Select a footage item in the Project panel.
Choose File > Interpret Footage > Main.
2
Choose a ratio from the Pixel Aspect Ratio menu and click OK.
3
Change pixel aspect ratio for a composition
Choose Composition > Composition Settings.
1
2 Do one of the following:
• Choose a composition settings preset from the Preset menu.
• Choose a value from the Pixel Aspect Ratio menu.
Common pixel aspect ratios
Asset
Square pixels
D1/DV NTSC
D1/DV NTSC Widescreen
D1/DV PAL
D1/DV PAL Widescreen
Anamorphic 2:1
HDV 1080/DVCPRO HD 720
(After Effects), HD Anamor-
phic 1080 (Adobe Premiere
Pro)
DVCPRO HD 1080 (After
Effects only)
Pixel aspect ratio
1.0
0.9
1.2
1.0666
1.422
2.0
1.33
1.5
When to use
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 footage that was transferred from film or for custom-
ized projects.
Footage has a 720 x 486 or 720 x 480 frame size, and the 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.
Footage has a 720 x 486 or 720 x 480 frame size, and the desired result
is a 16:9 frame aspect ratio.
Footage has a 720 x 576 frame size, and the desired result is a 4:3 frame
aspect ratio.
Footage has a 720 x 576 frame size, and the desired result is a 16:9
frame aspect ratio.
Footage was shot using an anamorphic film lens, or it was anamorphi-
cally transferred from a film frame with a 2:1 aspect ratio.
Footage has a 1440 x 1080 or 960 x 720 frame size, and the desired
result is a 16:9 frame aspect ratio.
Footage has a 1280 x 1080 frame size, and the desired result is a 16:9
frame aspect ratio.
AFTER EFFECTS CS3 66
User Guide