SLOW DOWN OR SPEED UP

Change Video Speed Online

Slow a clip down for review or speed it up for a tighter presentation while keeping the video and audio timing synchronized.

✓ 0.5x to 2x✓ Synchronized audio tempo✓ MP4 output

✓ No account required✓ Live progress✓ Automatic cleanup

Converter readyUp to 400 MB per request • 250 MB per file

250 MB per file400 MB per request45 min max video~30 min auto-delete

Drop video files here or click to browse from your device No files selected MP4, MOV, MKV, AVI, WebM, MP3, WAV, FLAC, M4A, AAC, OGG, OPUS + more

Convert to Recommended MP4 is recommended for broad video compatibility.

Output quality

Highlarger file Balancedrecommended Smallermore compression

Smart output: MP4Best overall compatibility for video playback and sharing.

Size depends on source

Speed settingsFine-tune the output

Maximum resolutionNever intentionally upscales; server limit: 1080p. Audio bitrateUsed by compressed audio outputs and video audio tracks. Sample rate48 kHz is common for video production. Output filename

.mp4

Available for single-file conversion. Trim startOptional HH:MM:SS or seconds. Trim endLeave blank to convert to the end. Remove audioCreate silent video output. Playback speedAudio tempo follows the video speed.

✓ Format-aware settings✓ Live queue progress✓ Files expire after ~30 min

WHY USE THIS TOOL

Control pacing without a timeline editor

Speed adjustment is useful for tutorials, demonstrations, review footage, timelapses, and shortening slow sections while keeping the whole clip understandable.

Slow down details

0.5x or 0.75x gives more time to inspect motion or follow a demonstration.

Tighten long footage

1.25x, 1.5x or 2x shortens playback without simply cutting sections.

Keep audio in sync

Audio tempo is adjusted together with the video rather than being left behind.

HOW IT WORKS

How to change video speed

1
Upload a video
Choose a supported clip.
2
Select playback speed
Pick a slower or faster speed from 0.5x through 2x.
3
Export the MP4
Video timing and audio tempo are adjusted together.

Good to know

Speed changes alter duration. A 2x export is roughly half as long, while 0.5x is roughly twice as long.

RELATED TOOLS

More Ways to Work With Your Media

Use a focused tool when you know the task, or open the universal converter for full format control.

QUICK ANSWERS

Video Speed Changer FAQ

Can I make a video twice as fast?

Yes. Choose 2x.

Can I slow a video down?

Yes. 0.5x and 0.75x options are available.

Will the audio stay synchronized?

Yes. The audio tempo is adjusted along with video timing for supported clips.