Changelog

New

• Speeds now go up to 100x, for near-instant jumps forward in a clip. Drag a point past the top of the graph and the speed axis stretches with it; keep going for more speed, or pull back to ease off. Drag past the bottom to reach 1% the same way.
• Points snap to new 20x, 50x and 100x guides, and right-clicking a point offers the same speeds.

Improved

• The speed axis no longer rescales while you drag. A point you pull down from 10x to 5x stays at 5x instead of jumping back to 4x.
• After you drop a point, the axis only rescales when the curve no longer fits, and leaves a little room above your fastest point.
• In the free version, buying a licence is easier to find: SlowRamp → Buy SlowRamp… and Enter Licence Key…, a Buy licence button beside Export, and a banner you can hide.

Fixed

• Rendering Optical Flow ranges or exporting with Optical Flow no longer quits SlowRamp on macOS 15.4 and later versions of macOS 15.

Fixed

• SlowRamp no longer quits as soon as it opens on macOS 15.4 and later versions of macOS 15.

Good to know

• If you have a licence, nothing changes for you. It stays activated, and your exports have no watermark and keep their full resolution.

New

• SlowRamp is now free to try. Anyone can download it and use every feature. Without a licence, exports carry a small SlowRamp watermark and are limited to 1080p, and previews render at 720p. A licence removes all three limits.
• Know someone who films? Send them to slowramp.app to try it before they buy.

New

• Optical Flow now takes care of itself. Every part of your curve that is too slow for the original frames to look smooth is marked in purple automatically, and the marks follow your edits. If new frames warp or smear somewhere, switch that range off in the Speed inspector to keep the original frames there.
• Render all ranges. One button renders a preview of every purple range, so you can play back the whole clip with its new frames.
• Choose what counts as smooth motion in SlowRamp → Settings → General. The default is now 30 fps (previously 25). The dashed line in the curve editor follows this setting.

Improved

• Play and pause respond instantly again, even when you press Space in quick succession. Preview audio now matches your export exactly.
• Projects are saved in SlowRamp’s own folder on your Mac instead of next to your videos. Existing projects move over automatically, and the small .speedcurve files SlowRamp left beside your clips are cleaned up as you reopen them. Use Save Project… when you want a copy to take elsewhere.

Good to know

• Projects with ranges you drew by hand open with automatic ranges. Anything you had not marked starts switched off, so nothing changes in your export until you switch it on.

Fixed

• Pressing Space to play and pause a clip with a speed curve no longer makes playback race to the end after a few presses.
• With “Keep crop centered in preview” turned off, the crop frame now follows your framing keyframes during playback.

New

• In-app updates. SlowRamp now checks for new versions and installs them in place. Use SlowRamp → Check for Updates… at any time.
• Zoom and pan the timeline with a pinch or ⌥-scroll over the curve, scroll sideways to pan, and drag the playhead past either edge to keep panning while zoomed.
• A focused speed axis. The graph shows 0.1x to 4x by default, where nearly every edit lives. Drag a point against the top or bottom edge to reveal 10x or 1%; the axis eases back when the point returns.

Improved

• More room for your footage: the preview’s compare, magnify and full-screen controls moved into the window toolbar, the status bar below the curve is gone, and the zoomed-range overview only appears while zoomed.
• The inspector tabs are now Speed, Framing and Clip, matching the curve editor.
• Export sits at the right of the curve header next to the zoom controls, and responds to ⌘E. Loop joined the playback controls.
• Render while idle now fills the whole marked range chunk by chunk instead of re-rendering around the playhead and losing earlier work.
• Rendering a range that overlaps an existing rendered preview keeps the parts outside it.
• A refreshed licence screen and licence settings pane.

Fixed

• Long project names no longer clip in the window title.

New

• Speed ramps with adjustable curves.
• Audio speed curves with the classic skateboarding speed ramp sound.
• Super slow motion with Optical Flow on supported Macs.
• Vertical, square and 4:5 crops with editable center keyframes and Glide smoothing.
• Subject tracking that generates center keyframes, shows the frames being tracked, and marks where it loses the subject.
• Timed zooms with adjustable focus points.
• In/out trimming that samples the speed and framing curves at the selected frame.
• Saved projects and local processing. Exports are separate files; your original footage stays unchanged.