Free tools / Change video speed
Make a tutorial watchable at 1.5x, turn a clip into a slow-motion moment, or tighten a demo at 2x. Audio speeds up with the video without going chipmunk. All on your device.
Drop in your video.
Pick a speed — from half speed to double speed.
Download the re-timed MP4, audio pitch intact.
No — the audio is time-stretched with pitch correction, so voices stay natural instead of turning squeaky at 2x or droning at half speed.
Faster pacing is one of the most reliable retention boosts for short-form content — a 1.25–1.5x talking head feels more energetic without sounding unnatural.
No watermark, no account. The practical size limit is your device's memory — a few hundred MB is comfortable.
Drop one long video into Vairal and AI finds the most viral moments, cuts each into a captioned 9:16 short, and polishes it — in 40 languages, free to start.
Try Vairal free