Adobe Photoshop CS3 - Manual (Page 557)

PHOTOSHOP CS3
User Guide
550
Video preset file size guides
A. Action safe area (outer rectangle) B. Title safe area (inner rectangle)
Note: If you are creating content for the web or for CD, the title-safe and action-safe margins do not apply to your project
because the entire image is displayed in these media.
Preview options
To help you create images for video, Photoshop has a Pixel Aspect Ratio Correction viewing mode that displays
images at the specified aspect ratio. For more accurate previews, Photoshop also has a Video Preview command that
lets you immediately preview your work on a display device, such as a video monitor. To use this feature, you must
have the device connected to your computer via FireWire (IEEE 1394). See also “Preview your document on a video
monitor” on page 580. For more information on FireWire (IEEE 1394), see Apple’s website.
Other considerations
Both Adobe After Effects and Adobe Premiere Pro support PSD files created in Photoshop. However, if you’re using
other film and video applications, you might consider these details when you create images for use in video:
• Some video-editing programs can import individual layers from a multilayer PSD file.
• If the file has transparency, some video-editing programs preserve it.
• If the file uses a layer mask or multiple layers, you might not have to flatten the layers, but you might want to
include a flattened copy of the file in PSD format to maximize backward compatibility.
Aspect ratio
Aspect ratio specifies the ratio of width to height. Video frames have a frame aspect ratio, and the pixels that make
up the frame have a pixel aspect ratio. Some video cameras can record various frame aspect ratios, and different video
standards use different pixel aspect ratios.
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 width by 3 height) and a typical widescreen frame has a frame aspect ratio of 16:9.
Many video cameras that have a widescreen mode can record using the 16:9 aspect ratio. Many films have been shot
using even wider aspect ratios.
A
B