Video Speed

Stretch Video

• Select layer → Open timeline
• Change [Stretch] value:

• Greater than 1 (like 3.0~5.0) = slow motion (longer duration)
• Less than 1 (like 0.3~0.8) = speed up (shorter duration)
• Tips: Want smooth slow motion? Remember to enable Time Interpolation

Video Tutorial

Time Remap

Time remapping is a very professional and powerful speed change tool that can achieve arbitrary speed changes, local acceleration/deceleration, speed curves, and more.

When used in combination with Time Interpolation, it can create very smooth and natural variable-speed footage.

Basic Usage Tips:

• After enabling time remapping, you can freely add and adjust time keypoints on the timeline
• Combined with Time Interpolation, it can greatly improve the smoothness of variable-speed footage

Advanced Learning Suggestions:

This section only introduces the most basic concepts and operations. To master more complex and refined speed change techniques, it's recommended to search "AE time remapping" or "After Effects time remapping" to learn professional tutorials and examples.

Video Tutorial

Speed Ramp

• Add Property → Time → Speed Ramp
• Adjust speed parameter:

• Greater than 1 = speed up (time compression)
• Less than 1 = slow down (time stretch)
• Want to get creative? Add keyframes!

• Add keyframes at different positions on the timeline
• Change the speed value of each keyframe → achieve speed gradation. Perfect combination with Time Interpolation = professional-level speed change effect! More advanced techniques can refer to time remapping.

Video Tutorial

💡 Common Issues

Slow motion stutters?

Video becomes choppy after slowing down. It's highly recommended to enable Time Interpolation, and slow motion will be noticeably smoother.

Audio has noise after speed change?

Speed changes may cause audio artifacts or strange sounds. Recommendations:

• Set volume to 0 (mute), or
• Directly delete the audio property