To Remove 3:2 Or 24Pa Pulldown From Video; Importing Ddr-Based Footage; To Convert Footage - Adobe AFTER EFFECTS 7.0 Manual

It's important to remove 3:2 pulldown from video footage that was originally film so that effects you add in After
Effects synchronize perfectly with the original frame rate of film. Removing 3:2 pulldown reduces the frame rate by
1/5: from 30 to 24 fps or from 29.97 to 23.976 fps, which also reduces the number of frames you have to change. To
remove 3:2 pulldown, you must also indicate the phase of the 3:2 pulldown.
After Effects also supports Panasonic DVX100 24p DV camera pulldown, called 24P Advance (24Pa). This format is
used by some cameras to capture 23.976 progressive-scan imagery using standard DV tapes.

To remove 3:2 or 24Pa pulldown from video

Before you remove 3:2 pulldown, separate the fields as either upper-field first or lower-field first. Once the fields are
separated, After Effects can analyze the footage and determine the correct 3:2 pulldown phase and field order. If you
already know the phase and field order, choose them from the Separate Fields and the Remove Pulldown menus in
the Interpret Footage dialog box.
1 In the Project panel, select the footage from which you want to remove 3:2 pulldown.
Choose File > Interpret Footage > Main.
2
In the Fields and Pulldown section, select Upper Field First or Lower Field First from the Separate Fields menu.
3
4 Do one of the following and click OK:
•
If you know the phase of the 3:2 or 24Pa pulldown, choose it from the Remove Pulldown menu.
•
To have After Effects determine the correct settings, click Guess 3:2 Pulldown or Guess 24Pa Pulldown.
Note: If your footage file contains frames from different sources, the phase may not be consistent. If this is the case, import
the footage once for each phase. Then, add the footage to your composition as many times as there are phases and trim
each layer to use only the appropriate frames for each phase.

Importing DDR-based footage

To find out if After Effects plug-ins are available for your digital disk recorder (DDR), contact your DDR manufac-
turer.
You can bring DDR-based footage into an After Effects project in two ways. First, you can work with the footage
while it remains on the DDR, essentially treating the DDR as a remote hard disk. You can also transfer the footage
to your hard disk and import it into an After Effects project as you would any other file.
For information on using your specific DDR with After Effects, refer to your DDR manufacturer's plug-in documen-
tation.
When working with DDR-based footage in After Effects, make sure that your Composition Settings, Render
Settings, and the Interpret Footage dialog boxes for the footage files are all set to the frame rate used by your DDR.
If the frame rate in the Interpret Footage dialog box is 29.97 fps and the Composition Settings frame rate is 30 fps,
the footage will appear with duplicate frames.
Make sure that the field settings in the Interpret Footage and Render Settings dialog boxes are the same; otherwise,
the footage will preview and render with the wrong field order, causing the footage to play back with a jerky
appearance.

To convert footage

There are many different formats for viewing video in the world today. NTSC, for example, is the main broadcast
standard in North and South America and parts of Asia, while PAL is the standard in Great Britain and much of
Europe and Africa. There are also numerous emerging standards for high-definition (HD) video.
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