Temporal effects alter layers based on time.
Echo
Creates repeated versions of the layer, offset in time, which are blended onto the current frame.
| • | Echo Time - the time difference between each echo. |
| • | Decay - each subsequent echo will be less visible. |

Motion Trails
Adds a fake motion blur based on the movement of the layer.

Speed
Changes the playback speed of the layer, offering the ability to change the speed of playback over time.
The speed effect does not change the duration of the layer on the timeline. If you reduce the speed of the layer you will not be able to see any frames which are not played before the end of the layer.
Basic speed changes are better handled using the Rate Stretch tool or the Speed/Duration option on the timeline. See Refining Your Edit for more details.
Time Displacement
Displaces the layer based on time. You can displace using the layer itself or another layer.
The Black Time Shift and White Time Shift values specify where in time the displacement source is from.

Time Reverse
Plays the layer in reverse frame order.