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Adobe After Effects CC - 2015 Manual

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Rendering and Exporting
Last updated 11/30/2015
If you choose such a constrained output format, and your composition, its render settings, or its output module settings
don’t match the constraints, then After Effects shows a yellow warning icon
and the message “Settings mismatch” at
the bottom of the Output Module Settings dialog box.
Click the warning icon to see a detailed message that describes how the output file will be modified to meet the format
constraints. You can go back and change composition settings, render settings, and output module settings if you don't
want After Effects to make the changes automatically in the output module.
For more information about output module constraints and the warnings for mismatches in frame rate, dimensions,
and pixel aspect ratio, see the
Adobe website.
Encoding and compression options for movies
Compression is essential for reducing the size of movies so that they can be stored, transmitted, and played back
effectively. Compression is achieved by an encoder; decompression is achieved by a decoder. Encoders and decoders
are known by the common term codec. No single codec or set of settings is best for all situations. For example, the best
codec for compressing cartoon animation is generally not efficient for compressing live-action video. Similarly, the best
codec for playback over a slow network connection is generally not the best codec for an intermediate stage in a
production workflow. For information on planning your work with final output in mind, see
Planning your work.
After Effects uses an embedded version of the Adobe Media Encoder to encode most movie formats through the
Render Queue panel. When you manage render and export operations with the Render Queue panel, the embedded
version of the Adobe Media Encoder is called automatically. The Adobe Media Encoder appears only in the form of the
export settings dialog boxes with which you specify some encoding and output settings.
Note: The embedded version of the Adobe Media Encoder used to manage export settings within After Effects output
modules does not provide all of the features of the full, stand-alone Adobe Media Encoder application. For information
about the full, stand-alone Adobe Media Encoder application, see
Adobe Media Encoder Help .
For most output formats, you can specify format-specific encoding and compression options. In many cases, a dialog
box opens and presents these options when you choose a format to export to or click the Format Options button in the
Output Module settings dialog box. (See
Output modules and output module settings.)
Note: In After Effects CC 2014, formats such as H.264, MPEG-2, and WMV have been removed from the Render Queue
because Adobe Media Encoder gives better results. Use Adobe Media Encoder to export to these formats.
QuickTime (MOV) encoding and compression settings
1 In the Render Queue panel, click the underlined name of the output module.
2 Choose QuickTime from the Format menu.
3 Click Format Options in the Video Output section.
4 In the QuickTime Options dialog box, choose a codec and set options according to the specific codec and your
needs:
Quality A higher Quality setting produces better image quality but results in a bigger movie file.
Key Frame Every In QuickTime terminology, the term key frames refers to something different from the change-
over-time keyframes placed in the After Effects Timeline panel. In QuickTime, key frames are frames that occur at
regular intervals in the movie. During compression, they are stored as complete frames. Each intermediate frame
that separates them is compared to the previous frame, and only changed data is stored. Using key frames greatly
reduces movie size and greatly increases the memory required to edit and render a movie. Shorter intervals between
key frames enable faster seeking and reverse playback, but can significantly increase the size of the file.
Frame Reordering Some codecs allow for frames to be encoded and decoded out of order for more efficient storage.
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