Aspect Ratios - Adobe 65021048 User Manual

From the File Format drop-down menu, select Uncompressed 10-Bit (4:2:2 YUV), or Uncompressed 8-Bit (4:2:2
6
YUV).
Enter a name for the project and click OK.
7
Change your preferences
You can customize the look and behavior of Adobe Premiere Pro in many ways, from determining the default length
of transitions to setting the brightness of the user interface. These preferences will remain in effect until you change
them.
❖
Choose Edit > Preferences (Windows) or Premiere Pro > Preferences (Mac OS), and select the category of prefer-
ences you wish to change.
See also
"Play a sequence with preroll and
"Work with default transitions" on page 175
"Import still images" on page 78
"Scroll the Timeline panel during
"Change bin behaviors" on page 88
"Optimize rendering for available

Aspect ratios

About aspect ratios
An aspect ratio specifies the ratio of width to height. Video and still picture frames have a frame aspect ratio, and
the pixels that make up the frame have a pixel aspect ratio. Some cameras can record various frame aspect ratios,
and different video standards use different pixel aspect ratios.
You set the frame and pixel aspect ratios for an Adobe Premiere Pro project when you create it. Once they are set,
you cannot change them for that project. You can, however, use assets created with different aspect ratios in that
project.
Adobe Premiere Pro automatically tries to compensate for the pixel aspect ratio of source files. If an asset still
appears distorted, you can manually specify its pixel aspect ratio. It's important to reconcile pixel aspect ratios before
reconciling frame aspect ratios, because an incorrect frame size can be due to a misinterpreted pixel aspect ratio.
Frame aspect ratio
Frame aspect ratio describes the ratio of width to height in the dimensions of an image. For example, DV NTSC has
a frame aspect ratio of 4:3 (or 4.0 width by 3.0 height) and a typical widescreen frame has a frame aspect ratio of
16:9. Many cameras that have a widescreen mode can record using the 16:9 aspect ratio. Many films have been shot
using even wider aspect ratios.
postroll" on page 143
preview" on page 143
memory" on page 52
April 1, 2008
ADOBE PREMIERE PRO CS3 28
User Guide