Adobe ENCORE 2 Manual page 66

A
A 720 x 480 pixel image can have a screen aspect ratio of either
A. 4:3, or D. 16:9, depending on whether it has a pixel aspect ratio of B. 9, or C. 1.2.
About still-image pixels
Most digital still cameras and graphic applications use square pixels. You should set the pixel aspect ratio of still-
image assets to square to ensure that they display correctly. An exception to this rule are files created in Adobe
Photoshop CS and Adobe Photoshop CS2. Adobe Photoshop lets you work in nonsquare pixels when creating
images for DVDs and video. Use the Photoshop preset that matches your project. For example, if you're working with
NTSC DV footage at 720 x 480, you' d use preset, "NTSC DV 720 x 480 (with guides). "
To specify an asset's pixel aspect ratio
You can mix assets with different pixel aspect ratios in the same project. Adobe Encore DVD interprets each asset's
pixel aspect ratio on import. Occasionally, an asset may contain incorrect information which, in turn, prevents
Adobe Encore DVD from identifying it correctly. If you need to change an asset's pixel aspect ratio, you can use the
Interpret Footage command to specify it.
Changing the pixel aspect ratio for a video asset used in a timeline changes that timeline's screen aspect ratio. To
change the screen aspect ratio for a still timeline, see "To specify the screen aspect ratio" on page 63.
1 Select the file in the Project tab.
Choose File > Interpret Footage.
2
In the Interpret Footage dialog box, select Conform to, and then choose the appropriate pixel aspect ratio:
3
•
Square Pixels (1.0) for a file created using square pixels.
•
Standard (0.9)or (1.066) for a file created using nonsquare pixels with an aspect ratio of 0.9 (NTSC) or 1.066
(PAL).
•
Widescreen (1.2) or (1.422) for a file created using nonsquare pixels with an aspect ratio of 1.2 (NTSC) or 1.422
(PAL).
Click OK.
4
About screen aspect ratios
Screen aspect ratios describe the width to height ratio of an image or device. A standard television has a 4:3 ratio
(referred to as fullscreen) and a widescreen television has a 16:9 ratio. These ratios are also noted as 1.33 for fullscreen
(4 / 3 = 1.33) and 1.78 for widescreen. (Film, which comprises a majority of widescreen content, actually uses screen
aspect ratios ranging from 1.66 to 1.85, or even 2.35 for scope footage—but these all work well within the format and
can be considered widescreen.)
B C D
ADOBE ENCORE DVD 2.0 61
User Guide