Tools/materials: Dell xps 15, win 10 Home Edition, After Effects CC 20 17.
Steps:
1, open ae, import video material, and drag it to the timeline.
2. Double-click the material to display the overall preview progress box of the material in the video preview window.
3. Find and click the out point at the bottom of the progress bar to cut the clip range of the material.
4. After selecting the desired clip, close the video preview window, and you will find that only the cut clip is left.