This conversation has been merged. Please reference the main conversation: Ability to extend frame by dragging
Since we all use this frequently, I suggest the following method to implement "Extend Frame." Simply by adding a qualifier key (CTL, ALT, whatever), you can then drag out the mouse from the beginning or end of a clip in the required "Extension" direction. CS would assume it is a still frame derived from the points mentioned. Hovering over the created area of the clip would allow a popout field for entering the duration precisely if needed.