Command entry:Tools menu Grab Viewport Rename Animated Sequence File

Rename Animated Sequence File renames the _scene.avi preview file.

When you use Create Animated Sequence File, 3ds Max stores the output preview in a file called _scene.avi by default. View Animated Sequence File loads this file. If you want to keep the preview file, use Rename Animated Sequence File to save it under another file name; otherwise, the next Create Animated Sequence File will overwrite _scene.avi.