The FieldAssembler utility interlaces rendered field images. Fields are images made up of alternate lines as displayed on NTSC devices.
Each field image, contains only half of a full frame, and each field is stored in a separate file. Rendering images in this manner can be helpful when designing animations that will be played back on NTSC devices. However, to view these images on a computer screen, or to transfer them to certain other computer programs, such as compositing software, you need to reassemble them into full images. When this happens, you have half as many files, and each file has twice as much data.
For information on FieldAssembler menu items, see File menu commands, Edit menu commands, and Help menu commands.