Tooljin › Video Reverser › Velocity Edit

No app · beat sync · up to 4K

Make a velocity edit online, no app

Fast, then slow motion right on the hit, then fast again — the speed-ramp edit behind gym, car and dance Reels. Pick a preset, drag the hit to the moment that matters, and sync it to your song.

No signup neededWorks on phone and laptopMP4 up to 4K
4 presetsVelocity, Bullet time, Speed up, Slow down
Beat syncthe hit lands on the beat
Best momentfinds the action for you
No appmade in your browser
How it works

Three steps, right in your browser

Choose your clip

A rep, a car passing, a walk towards the camera — anything with one big moment.

Pick a ramp and set the hit

Choose Velocity or Bullet time, then drag the ◆ on the timeline to the moment that should go slow. The preview plays the ramp live.

Add your song and export

Add music, turn on Sync to the beat, and export an MP4 up to 4K.

Features

Why make it here

One-tap speed ramps

Velocity, Bullet time, Speed up and Slow down — no curve editing, no keyframes.

The hit, where you want it

Drag the ◆ marker on the timeline; the curve preview shows exactly where it slows.

Synced to the beat

Add your song and the slowest moment lands exactly on a beat.

Finds the action

Best moment scans the clip and picks the stretch with the most movement.

Freeze on the hit

On Pro, hold the hit for half a second or a second, with a white flash and a slow push in — it starts on the beat when synced.

Gym velocity in one tap

The Gym velocity recipe sets the ramp, a 9:16 frame and a “Wait for it…” hook at once — tap it again to undo.

Ideas

What to make with it

Gym edits

Slow motion on the last rep, fast everywhere else.

Car and bike edits

Fly past, then hang in the air as the beat drops.

Entry and attitude edits

Walk towards the camera, slowing on the look.

Dance moves

Freeze the peak of the move for a beat.

Sports

Bullet-time the kick, the shot or the catch.

Product reveals

Speed in, slow on the unveil.

FAQ

Questions, answered

A velocity edit changes the speed inside one clip — fast, then slow motion right at the key moment, then fast again — usually timed to music. It's also called a speed ramp.

Yes. This tool runs in your browser on phone or computer: pick the Velocity preset, set the hit and export — no app to install.

You can try every ramp and watch it in the preview for free. Exporting speed ramps is part of Pro; free accounts can export steady slow motion, reverse and boomerang.

Add your song, turn on Sync to the beat, and the tool finds the tempo and moves the music so the slowest moment of the ramp lands on a beat.

Yes, on Pro. Freeze on the hit holds the moment at the diamond for half a second or a second, with a white flash and a slow push in. With Sync to the beat on, the freeze starts exactly on a beat.

Velocity runs fast, eases into slow motion around the hit, then speeds up again. Bullet time nearly freezes for an instant at the hit, then carries on at normal speed.

No. The edit is made on your own device, so the video never leaves it.

Ready when you are

Free, up to 4K, and your video stays on your device.

Make a velocity edit