It's easy to use the Curve Speed feature to get a flexible video!
Click the Speed button and choose Curve Speed.
Here, you can choose from pre-made samples or customize it from zero.
Let's choose a sample as an example:
Click Montage, and you will find a chart below.
The horizontal axis means speed; the vertical axis means video length.
Drag the dot in the chart up/down to adjust the speed, and drag it to the left or right to adjust the speed up/speed down time point in the video.
If you are not satisfied with the customization, click the Reset button below the chart to restore the original settings.
If you want to adjust the number of time points, you can
Click the dot and click the Delete button;
Click any position of the line and click the +Add Point button to add a time point.