Time-remapping parts of a motion footage or audio layer
There are limitless options for time-remapping in After Effects. For example, you can time-remap an entire layer, making it play backwards. You can time-remap a few frames at the beginning or end of the layer, creating a freeze-frame effect. Or you can time-remap frames in the middle of the layer, creating a slow-motion effect. You can remap time for video footage only; still images cannot be remapped. For best results, do not remap video footage that has been time-stretched.
To freeze the first frame without changing the speed: - In a Composition window or Timeline window, select the layer you want to remap.
- Choose Layer > Enable Time Remapping.
- Click the triangle to the left of the layer name to expand the layer outline.
- Click the triangle to the left of the Time Remap heading to display the time graph for time remapping.
- Move the current-time marker to where you want the movie to begin.
- Shift-click the keyframes at the layer's start and end, or click "Time Remap" to select the start and end keyframes.
- Drag the first keyframe to the current-time marker, which moves the start and end keyframes.
To freeze the last frame without changing the speed: - In a Composition window or Timeline window, select the layer you want to remap.
- Choose Layer > Enable Time Remapping.
- Click the triangle to the left of the layer name to expand the layer outline.
- Click the triangle to the left of the Time Remap heading to display the time graph for time remapping.
- Drag the triangle at the end of the layer duration bar to the time where you want the freeze frame to end.
To remap time in the Timeline window: - In a Composition window or Timeline window, select the layer you want to remap.
- Choose Layer > Enable Time Remapping.
- Click the triangle to the left of the layer name to expand the layer outline.
- Click the triangle to the left of the Time Remap heading to display the time graph for time remapping.
- Move the current-time marker to the frame where you want change to begin, and then click the keyframe check box.
- On the Time Remap graph below the keyframe, drag the Value graph marker, watching the Time Remap value as you drag. To prevent the graph from dropping below the dotted line, press Shift as you drag the graph marker.
Dragging the value graph marker down slows down the layer. - To slow down the layer, drag the Value graph marker down. (If the layer is playing in reverse, drag up.)
- To speed up the layer, drag the Value graph marker up. (If the layer is playing in reverse, drag down.)
- To play frames backward, drag the Value graph marker down to a value below the previous keyframe value.
- To play frames forward, drag the Value graph marker up to a value above the previous keyframe value.
- To freeze the previous keyframe, drag the Value graph marker up to a value equal to the previous keyframe value so that the graph line is flat. Another method is to select the keyframe and choose Animation > Toggle Hold Keyframe, and then add another keyframe where you want the motion to start again.
A. No change B. Fast motion C. Freeze frame D. Backward motion
To remap time in a Layer window: - Open the Layer window for the layer you want to remap.
- Choose Layer > Enable Time Remapping. A second time ruler appears in the Layer window above the default time ruler and the navigator bar.
- On the lower time ruler, move the current-time marker to the first frame where you want the change to occur.
- On the upper time ruler, the remap-time marker indicates the frame currently mapped to the time indicated on the lower time ruler. To display a different frame at the time indicated on the lower time ruler, move the remap-time marker accordingly.
- Move the current-time marker on the lower time ruler to the last frame where you want change to occur.
- Move the remap-time marker on the upper time ruler to the frame you want to display at the time indicated on the lower time ruler:
- To move the preceding portion of the layer forward, set the remap-time marker to a later time than the current-time marker.
- To move the preceding portion of the layer backward, set the remap-time marker to an earlier time than the current-time marker.
- To freeze a frame, set the remap-time marker to the frame you want frozen. Then, move the current-time marker (lower ruler) to the last point in time where the frame will appear frozen and move the remap-time marker again to the frame you want frozen.
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