Modifying clip properties with Interpret Footage
Learn how to modify the properties of a clip by selecting options in the Interpret Footage dialog box in Premiere Pro.
You can modify the properties of a clip by selecting options in the Interpret Footage dialog box.
In the Project panel, right-click (Windows) or Ctrl-click (Mac OS) the clip for which you want to change a property.
Select Modify > Interpret Footage.
Select the options desired, and click OK.
Andrew Devis has provided a video tutorial on Interpreting Footage on the Creative COW website.