Apple Shake 4 - Manual (Page 200)

200 Chapter 6 Importing Video and Anamorphic Film
6 In the OutputFrameRate subtree, turn off the OutputFrameInterlaced button.
Creating Interlacing From Non-Interlaced Source Media
You can also use the reTiming parameters to interlace previously non-interlaced media.
To create interlaced output from non-interlaced source media:
1 With a FileIn node’s parameters loaded, open the Timing tab.
2 Set the reTiming parameter to Convert.
Additional parameters appear below.
3 Set the InputFrameRate parameter to match the format of the original media.
4 Open the InputFrameRate subtree, and make sure that InputFrameInterlaced is turned
off.
5 Set the OutputFrameRate to the desired video format (NTSC or PAL).
6 Open the OutputFrameRate subtree and do the following:
a Turn on the OutputFrameInterlaced parameter.
b Set the OutputFrameDominance parameter to the desired field dominance.
Displaying Individual Fields in the Viewer
In order to be able to see each individual field for purposes of paint or rotoscoping, you
must set the Inc (Increment) parameter in the Time Bar to 0.5.