Specifying interpretation rules

The interpretation rules.txt file describes how After Effects interprets field order, alpha channel, frame rate, and pixel aspect ratio when importing footage. You can customize this file in any text editor, and add or delete entries, to save time. When you import, After Effects reads the file and follows any applicable rules, as long as interpretation rules.txt is stored in the same folder as the After Effects application. You can always override these interpretations after importing. For more information, see Using interpretation rules.