You can change the playback speed of a movie by doing the following
- Open the Movie menu
- Go to Playback Speed
- Select one of the following options: x4, x2, x1.5, x1/2 and x1/4.
Changing playback speed does not make any permanent changes to your movie so will not be applied to exported files.
To permanently change the speed of a movie, FlashBack Pro is required and can be done by doing the following:
- Select the frames that you want to speed up or slow down
- Open the Actions menu
- Go to Movie Speed
- Select whether you want to speed or slow down the selected frames