Slow motion app for macOS

Slow down any video
up to 32× with AI

No slo-mo camera needed. Turn a 60 fps iPhone video into 1,920 fps of super smooth slow motion, with AI models that run locally on your Mac.

Coming soon for MacmacOS 14 or later · Apple silicon

Real time60 fps

0 generated frames

16× slower

Slowed0.0 / 9.1s

max slowdown: 32×
effective, from 60 fps: 1,920 fps
even 30 fps iPhone video: Any camera
no video uploads: On-device AI

Use cases

What it’s for

Action and sports

Slow the jump, keep the run-up in real time.

Gaming clips

Slow a highlight, or boost 30 fps captures to 60.

Frame rate boost

24 or 30 fps to 60 at the same speed. No slow motion.

Social edits

Speed ramps for Reels, TikTok and Shorts.

Form analysis

Golf swings, serves, lifts. Frame by frame, no high-speed camera.

Product b-roll

Pours, splashes, drops. A 240 fps look from a 60 fps take.

AI-generated video

Smooth out low frame rate clips from video models.

3D renders

Interpolate a render instead of rendering more frames.

How it works

Interpolated, not generated

This is not generative AI, so nothing is hallucinated. RIFE, a neural network trained on real video, tracks how each pixel moves between two real frames and builds the frames in between from them. Editor tricks fall short: frame sampling stutters, frame blending ghosts, optical flow tears on fast motion.

Region-based

Set in and out points and a factor from 2× to 32×, with eased ramps. Footage outside the region is untouched.

AI interpolation

Every new frame is built only from the real frames on either side. No invented detail, and fast motion stays sharp instead of ghosting.

On device

RIFE runs on Apple MLX, video decodes and encodes on the media engine. Your video never leaves your Mac.

Single-pass export

Decode, interpolate and encode in one pass. Preview plays in real time while you edit.

Batch mode

Queue whole files and interpolate them end to end, at the same speed or slowed.

Formats

In: H.264, HEVC, ProRes, from Files or Photos. Out: H.264, HEVC or ProRes at source, 60, 30 or 24 fps.

Get Slowframes

Coming soon. Free download for Apple silicon Macs.