The interval is configurable in the dialog, lower numbers means more frequent snapshots. The interval at which saves happen is based on sprite change events - when changes are made to the sprite, including undo/redo actions. It requires there to be an active & saved sprite in order to run. This option will open up a dialog box that provides functionality take snapshots on an interval. Record comes packaged with many options available from the Scripts menu. Record requires that whatever file you are working on be saved so it can know where to save your snapshots of the flattened sprite. Use the Rescan Scripts Folder option or Restart Aseprite to make use of the installed scripts.

Copy the extracted folder, aseprite-record, to the opened directory.

Open Aseprite and select File > Scripts > Open Scripts Folder.

Download the ZIP file and extract it anywhere you want.

It stores flattened copies of your sprite in a folder local to your current working sprite with an incrementing number to take advantage of Aseprite's automatic gif functionality for files with sequentially numbered names. This can be used to create such a time lapse gif of a sprite you are working on natively within Aseprite, or just to keep track of your work as it progressed. I always enjoyed seeing progress recordings of artwork and wanted to have a simple way to make them that didn't require firing up a screen recording software and dealing with video editing. Record is a suite of LUA scripts for taking incremental snapshots of your sprite within Aseprite for the purpose of making a time lapse/progress gif.

Time lapse tool photos out of order