Apple Final Cut Express 4 - Manual (Page 1053)

Chapter 69 Exporting Still Images and Image Sequences 1053
XII
9 When you’re ready to export, click Save.
A dialog shows you the progress of the export. To cancel your export, press Esc or
click Cancel.
Each file of the image sequence is named in the form of “Filename 001.ext,” where
“Filename” is the name you gave, the number (001) is the number of the frame, and
“.ext” is the filename extension indicating the format.
A file is saved for each
frame of video.