How to Speed Up or Slow Down Video

FastEdit supports speed multipliers from 0.25x (quarter speed) to 4x (four times normal speed). You can apply different speeds to different segments of the same video using speed regions on the timeline.

Yes. FastEdit uses speed regions on the timeline. You can mark different segments and assign a different speed to each one. For example, normal speed for the intro, slow motion for the key moment, and fast forward through the filler.

For smooth slow motion, the source should be at least 60fps. Slowing down 30fps footage to 0.25x results in roughly 7.5fps playback, which looks choppy. If your source is 30fps, 0.5x is the slowest speed that maintains smooth playback.

Audio speed changes proportionally with video speed. At 2x, audio plays at double speed with a higher pitch. At 0.5x, audio is half speed with a lower pitch. For most creative speed effects, muting the audio produces a cleaner result.