Changing Playback Speed
To adjust the speed of your clip, click on the clip, then open the "Effects" tab. Choose the Speed effect from the Effects Library.
Enter a percentage into the box (or drag the trackbar) to update your clip with the new speed.
100% is the original speed of the clip. To slow your clip down, enter a lower percentage. To speed it up, enter a higher percentage. Some example values are:
Playing Video Backwards
To play video backwards, select the 'Play clip backwards' radio button option. You can also adjust the speed if desired.
To remove the speed effects, click the white cross delete button on the top-right of the Speed Change item in the "Effects applied to this clip" list. The clip will return to the original speed and playback direction (forwards).