For developers who record their sessions
Speed up your coding videos — without learning a video editor.
You recorded 30 minutes of building with Claude Code, Cursor, or Copilot. Most of it is dead air — the agent thinking, tests running, you waiting. Speedup fast-forwards just those stretches, so what’s left is worth watching.
The footage is good. The pacing kills it.
The interesting moments — typing a prompt, reviewing a diff, the result landing — are minutes apart, separated by dead air nobody will watch. Fixing that in iMovie means splitting the clip at every boring stretch and setting a speed on each piece. That’s 45 minutes of fiddly editing for a video you recorded in 30. So usually it just dies on disk.
Three steps. One file. Five minutes.
- 01
Open your recording
Drop in the .mov or .mp4 straight from QuickTime or CleanShot. It plays right away — no import, no project file.
- 02
Mark the dead air and pick a speed
Drag across each slow stretch on the timeline and give it 2×, 4×, 8×, or 16×. Sped-up sections are muted automatically — no chipmunk audio over your narration.
- 03
Export one .mp4
Trim the ends, press Export, and get a single full-resolution .mp4 — ready for YouTube, LinkedIn, or wherever you post.
Speed up the boring parts — keep the good parts at full speed.
A blanket 2× makes your narration unlistenable and the interesting moments fly by. Speedup is built for variable speed: each dead stretch gets its own speed, and the parts worth watching play normally, with their audio intact.
A few common questions
Will it speed up the whole video or just parts?
Just the parts you mark. Everything else stays at full speed with its audio. That's the whole point.
Does the audio get chipmunky when sped up?
No. Sped-up sections are muted, so your normal-speed narration carries the video.
What can I open?
Any screen recording — .mp4, .mov, or .m4v — from QuickTime, CleanShot, or similar.
How much does it cost?
Your first export is free. After that, a one-time $29 unlocks unlimited exports — no subscription, no account.
Do my recordings stay private?
Completely. Nothing is uploaded; your recordings never leave your Mac.