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Adobe After Effects CC - 2015 Manual

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Workspace and workflow
Last updated 11/30/2015
For more information, see Improve performanceand Memory & Multiprocessing preferences .
Planning for playback on computer monitors and mobile devices
When you create a movie for playback on a personal computer—whether downloaded from the Web or played from a
CD-ROM—specify composition settings, render settings, and output module settings that keep file size low. Consider
that a movie with a high data rate may not play well from an older CD-ROM drive that cannot read data from the disc
fast enough. Similarly, a large movie may take a long time to download over a dial-up network connection.
When rendering your final movie, choose a file type and encoder appropriate for the final media. The corresponding
decoder must be available on the system used by your intended audience; otherwise they will not be able to play the
movie. Common codecs (encoders/decoders) include the codecs installed with media players such as Flash Player,
Windows Media Player, and QuickTime Player.
Aharon Rabinowitz provides an article on the Creative COW website about planning your project with the final
delivery specifications in mind.
Trish and Chris Meyer provide an article on the Artbeats website that describes some of the considerations for creating
video for the Web.
For more information about encoding and compression options for After Effects, see this FAQ entry: “FAQ: What is
the best format for rendering and exporting from After Effects?”
Mobile devices
Many of the considerations for creating movies for playback on mobile devices, such as mobile phones and the Apple
iPod, are similar to the considerations for creating movies for playback on personal computers—but the limitations are
even more extreme. Because the amount of storage (disk space) and processor power are less for mobile phones than
for personal computers, file size and data rate for movies must be even more tightly controlled.
Screen dimensions, video frame rates, and color gamuts vary greatly from one mobile device to another.
Use these tips when shooting video for mobile devices:
•Tight shots are better. It’s hard to see a face on a tiny screen unless it’s shot in relative close-up.
• Light your subjects well, and keep them separated from the background; the colors and brightness values between
background and subject should not be too similar.
• Avoid excessive zooming and rolling, which hinder temporal compression schemes.
• Because stable (non-shaky) video is easier to compress, shoot video with a tripod to minimize the shaking of the
camera.
• Avoid using auto-focus and auto-exposure features. When these features engage, they change the appearance of all
of the pixels in an image from one frame to the next, making compression using interframe encoding schemes less
efficient.
Use these tips when working in After Effects (for mobile devices):
•Use a lower frame rate (12-24 fps) for mobile devices.
• Use motion-stabilization tools and noise-reduction or blur effects before rendering to final output, to aid the
compressor in reducing file size.
• Match the color palette to the mobile devices that you are targeting. Mobile devices, in general, have a limited color
gamut.
• Consider using cuts and other fast transitions instead of zooming in and out or using fades and dissolves. Fast cuts
also make compression easier.
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