Change how fast a clip plays and export it as a new file. The preview plays at the chosen speed, with the pitch setting applied, so you can check a voice or a beat before exporting.
Speed
Set a ratio between 0.25× and 4×. Above 1× the clip is shorter, below 1× it is longer: a 60 second clip at 2× lasts 30 seconds, at 0.5× two minutes. The rail shows the new length and frame rate before you export.
Pitch
Speed and pitch are tied together in any recording. Play it faster and every frequency rises with it, which is why sped-up voices sound thin.
- Keep the original pitch resamples the soundtrack to the new length, then runs the same pitch shifter the audio tools use to move it back. Speech stays intelligible between about 0.5× and 2×. Beyond that range the correction starts to smear drums and consonants.
- Off leaves the pitch shift in, like a tape machine. Use it for effect, or when the clip has no voice.
Remove audio drops the track, which also skips the pitch work entirely.
Frames
Speeding up keeps every source frame until they would land less than 1/60 of a second apart, then drops the extras. Slowing down stretches each frame’s time on screen without inventing new ones, so the result is only as smooth as the source frame rate allows. For a smooth 0.25× slow motion, start from footage recorded at 120 fps.
Resolution
Every frame is re-encoded, because every timestamp changes. Keep source size unless you need a smaller file; 720p and 1080p scale the frame down, never up.
Related jobs
To slow down only one part of a clip, cut that part out with the video trimmer first. To play a clip backwards, use reverse video, which also reverses the sound.