Users can add the blur effect to the selected part of the video and use the keyframe feature to adjust the blur section to follow the object smoothly. Please see the instructions below for more information.
Please see more information about the blur effect in this video:
Select the clip that you want to add the blur effect to and click Edit.
Select Blur Effect from the left sidebar, and click Add Blur to add the blur shape to the clip.
Drag the blur shape to the desired position and adjust its size.
Click the right and left arrow to move between frames, or click the frame from the timeline to jump to a different frame. After moving to a new frame, you can adjust the position and size of the blur effect; the adjustment will be saved as a keyframe to the timeline, and the blur shape will move accordingly in the video.
Click Done to complete the setting.