All Files Setting the Scene Length T-HFND-007-007 You can set the scene length by entering its exact amount of frames or by adjusting its length using the scene length bracket in the Timeline view. How to set the scene's length in frames Select Scene > Scene Length. The Set Scene Length dialog box opens. In the Number of Frames field, enter the number of frames needed. How to modify the scene length in the Timeline view In the ruler of the Timeline view, click and drag the red scene length bracket and move it to the left to shorten the scene or to the right to extend the scene.