Video speed changer from0.1× to 4×
Ten times slower for a detail nobody would otherwise catch, four times faster for a process nobody wants to sit through. One slider, applied to the whole video.
How to use the video speed changer in three steps
Speed is an editorial decision more than a technical one. Slowing a clip says "look at this"; speeding one up says "you don't need to watch all of this." Shorz keeps the control right next to the rest of the effects, with a range wide enough for real slow motion and real timelapse rather than a token 0.5× / 2×.
Set the speed
The slider runs from 0.1× to 4× in 0.1 steps. Below 1× is slow motion, above 1× compresses time — and everything else in the project re-times around it.
0.1× to 4×, in 0.1 steps
Or speed one file up
For a single file with no project, give Shorz a speed factor — 0.5 for half speed, 2.0 for double — and it writes a new video at that speed.
One file, one factor
Keep the rest of the edit
Captions, zooms and effects re-time with the footage, so a speed change doesn't leave subtitles stranded a second behind the audio.
Everything re-times together
Find it in the app under Settings → Video Speed · MCP single-file tool.
Why Video Speed Changer in Shorz
Speed and stillness together
A speed ramp into a freeze frame is one of the strongest emphasis moves in short-form. Both live in the same settings panel, alongside auto-zoom and its sound effects.
Pairs with freeze frame
No length ceiling
Timelapsing an hour-long screen recording means reading an hour-long file. Online tools cap that; a desktop app doesn't. Shorz reads it off your disk at whatever size it is.
Any file size
Who uses it, and for what
Slow motion
Stretch the moment worth seeing twice.
Timelapse
An hour of work in fifteen seconds.
Gameplay
Slow the clutch play, speed the walk-back.
Process videos
Compress the boring middle.
Shorz speaks MCP
Shorz isn't a locked web app. Connect it to Claude, Cursor, Codex or Gemini and your assistant can drive it directly — one message instead of a panel full of clicks. You review before anything is published.
See how MCP automation works
You say
“Make this screen recording 3× faster and add a music track under it.”
Shorz does
- 1Apply the 3× speed factor
- 2Generate a music bed
- 3Mix the audio levels
- 4Export the timelapse
Every tool ships with the same promises
They're not separate products with separate bills. One app, one credit balance, one export that belongs to you.
- No subscription — prepaid credits that never expire
- No watermark on anything you export, ever
- Full commercial rights on what you create
- A desktop app for Windows and Mac — your files stay on your machine
- Auto Edit and Clipping: 4 free videos a week, no card
- Drivable from Claude, Cursor, Codex or Gemini over MCP
Video Speed Changer questions
0.1× to 4×, in 0.1 steps — genuine slow motion at the bottom and a real timelapse at the top, rather than a fixed set of presets.
Yes. Speed is applied to the project, so subtitles, zooms and effects re-time with the footage.
Yes. The single-file speed tool takes a speed factor and writes a new video, driven over MCP by the AI assistant you've connected to Shorz.
Slowing playback stretches the existing frames, so very low speeds on low-frame-rate source footage will look choppier. Shooting at a higher frame rate gives you more room to slow down cleanly.
Still have questions? Ask founder
More Shorz tools
Freeze Frame
The oldest emphasis trick in editing, automated.
Explore
Video Reverser
Play it backwards for the reveal-in-reverse trick, or loop it until it fills the duration you need.
Explore
Video Trimmer
Give it a start and an end and get that range back as a new file.
Explore
AI Music Generator
Describe the track — genre, mood, tempo, instruments — and Shorz writes it with ElevenLabs Music or Google Lyria 2.
Explore
Speed up or slow down your video
0.1× to 4×, with captions, zooms and effects re-timing along with it. No upload, and no limit on how long the file is.
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