Now, here is how to show the hidden Temporal slider. Put your cursor over the Quality slider and press the Option key (on a Mac) or the Alt key (on Windows). Notice that when you press the Option key the slider changes to read Temporal (see Figure 6-8). This means you can separate the spatial (frame-per-frame look) from the temporal (smoothness of playback or quality of delta frames).
Figure 6-8. Temporal compression slider