Video speed

0.1–10×

Open videoChoose or drop a file. Everything stays on this device.

0:00.000:00.00

1×

Live preview. Interpolation applies during export.

Speed2 keyframes

Keyframe 10:00 · 1×

Speed × 1.0000×

Export

MP4 · H.264 video

Output duration—

Frame rate Frame interpolation Max resolution Quality

Keep audioAudio follows speed keyframes with pitch-preserving tempo changes.

Export runs on this device. Optical flow can be very slow on phones; frame blending is much faster.