Apple Shake 4 - Manual (Page 204)

204 Chapter 6 Importing Video and Anamorphic Film
In the following example, the image has been resized from 640 x 480 to 720 x 486. The
image on the left has field rendering off, while the image on the right has field
rendering on. In the left example, resizing the image without removing interlacing first
has resulted in undesirable inter-field bleeding (in other words, the lines in the
alternating fields have been enlarged and distorted, and no longer line up). The right
example benefits from having been de-interlaced before image resizing. By reapplying
interlacing after the resize transformation, field-to-field continuity has been preserved
(in other words, the field lines line up properly).
Integrating Interlaced and Non-Interlaced Footage
If you need to integrate interlaced and non-interlaced media within the same script,
the best strategy is to decide which format the video needs to be in—interlaced or
non-interlaced—and convert all media in your script to that format.
You can use the Convert setting of the reTiming parameter in the Timing tab of each
FileIn node’s parameters to do this. For more information, see “
Setting the reTiming
Parameters of Each FileIn Node ” on page 198.
JPEGs and Fields
Using the JPEG output for field rendering is not recommended. The compression
bleeds information from one field into the other, which results in unwanted artifacts.
Resize without field rendering Resize with field rendering