How shot files are named

Every file the app understands is named with three fixed-width groups of digits — chapter, slot, and version — followed by an optional free-text suffix and the file extension. Written out, the convention is CCSVExtra.ext: CC chapter digits, S slot digit, V version digit, Extra anything you like, .ext the extension.

Those digits are what let the app group files into shots and renumber them without you tracking any numbers yourself — they encode exactly where each file sits in the edit. You mostly just read this convention; the only part you ever change is how many digits each group uses (see Adjust the naming pattern).

With the default widths — 2 chapter digits, 1 slot digit, 1 version digit — 0001.mp4 is chapter 00, slot 0, version 1. 0020E.jpg is chapter 00, slot 2, version 0, with the extra suffix E. Same shot, different files, distinguished by their version and suffix.