The interlace utility is used to interlace field rendered images. Field rendered images are images in a sequence of images designed for video playback on NTSC devices. Each field, or image, contains only 1/2 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, you need to reassemble them into full images. When this happens, you end up with half as many files, and each file has twice as much data.

To use interlace

1. From a Linux shell, type:

   interlace [-a # # #] [-d] [-e #] [-r] [-t str] base_image_name
   

   Option	Description
   -a [# # #]	Specifies an animation to be interlaced the three numbers are start frame, end frame and by frame. The start end and by frame must be integers currently.
   -d	Specifies the even field to be the first field; otherwise, the odd field is the first field. This option should agree with the field option in Render Settings windows.
   -e	Specifies the padding length of the extensions.
   -r	Deletes the original field images.
   -t	Specifies the file extension trailer (for example, sgi).
   -u	Unlaces frames into fields.
   -help	Displays the help file.