Creating images for video, About creating images for video – Adobe Photoshop CS4 User Manual
Page 545
538
USING PHOTOSHOP CS4
Video and animation
Last updated 1/10/2010
Important: You may lose some interpolated keyframes when converting a timeline animation to a frame animation. The
animation appearance doesn’t change, however.
❖
In the Animation panel, do any of the following:
•
Click the Convert To Frame Animation icon
.
•
Click the Convert To Timeline Animation icon
.
•
From the Animation panel menu, choose either Convert To Frame Animation or Convert To Timeline.
Specify timeline duration and frame rate (Photoshop Extended)
When you are working in timeline mode, you can specify the duration and frame rate of a document containing video
or animation. Duration is the overall time length of the video clip, from the first frame you specify to the last. Frame
rate or frames per second (fps), is usually determined by the type of output you produce: NTSC video has a frame rate
of 29.97
fps; PAL video has a frame rate of 25
fps; and motion picture film has a frame rate of 24
fps. Depending on the
broadcast system, DVD video can have the same frame rate as NTSC video or PAL video, or a frame rate of 23.976.
Video intended for CD-ROM or the web typically has a frame rate of 10 to 15
fps.
When you create a new document, the default timeline duration is 10 seconds. The frame rate depends on the chosen
document preset. For non-video presets (like International Paper), the default rate is 30
fps. For video presets, the rate
is 25 fps for PAL and 29.97 for NTSC.
1
From the Animation panel menu, choose Document Settings.
2
Enter or choose values for Duration and Frame Rate.
Note: Reducing the duration of an existing video or animation has the effect of trimming frames (and any keyframes)
from the end of the document.
More Help topics
Set the timeline area to preview (Photoshop Extended)
Creating images for video
About creating images for video
Photoshop can create images of various aspect ratios so that they appear properly on devices such as video monitors.
You can select a specific video option (using the New dialog box) to compensate for scaling when the final image is
incorporated into video.
Safe zones
The Film & Video preset also creates a document with nonprinting guides that delineate the action-safe and title-safe
areas of the image. Using the options in the Size menu, you can produce images for specific video systems—NTSC,
PAL, or HDTV.
Safe zones are useful when you edit for broadcast and videotape. Most consumer TV sets use a process called overscan,
which cuts off a portion of the outer edges of the picture, allowing the center of the picture to be enlarged. The amount
of overscan is not consistent across TVs. To ensure that everything fits within the area that most TVs display, keep text
within the title-safe margins, and all other important elements within the action-safe margins.