What video formats are supported?
We support all major video formats including MP4, WebM, AVI, MOV, and MKV. Your output video will maintain the same format as your input file.
Video Speed Changer
Speed up or slow down videos with precision and smooth motion
Select your video
Drop a video file here or click to browse
Choose file
Supports MP4, WebM, AVI, MOV and more
Quick Guide
1
Upload Your Video
Select any video file from your device. We support MP4, WebM, AVI, MOV, and MKV formats.
2
Adjust Speed
Use the slider or presets to change speed from 0.25x to 4x. Enable interpolation for smoother slow motion.
3
Download Result
Preview your changes and download the speed-adjusted video in the original format.
Professional Video Speed Control
Transform your videos with our advanced speed control tool. Whether you need dramatic slow-motion effects, quick time-lapse sequences, or subtle speed adjustments, our video speed changer delivers professional results with precision and quality.
Our browser-based tool processes your videos entirely on your device, ensuring complete privacy and instant results. No server uploads, no waiting in queues, and no quality loss from unnecessary re-encoding.
Advanced Speed Control Features
Precise Speed Range
Control video playback speed from 0.25x (4x slower) to 4x (4x faster) with precise 0.25x increments. Perfect for creating dramatic slow-motion sequences or quick time-lapse effects.
Motion Interpolation
Enable motion interpolation for slow speeds to create ultra-smooth slow-motion effects. Our algorithm generates intermediate frames for professional-quality results.
Real-time Preview
Preview your speed changes instantly with our real-time playback rate adjustment. See exactly how your video will look before processing.
Format Preservation
Your processed video maintains the original format and quality. No unnecessary conversions or quality loss during speed adjustment.
Perfect For
Sports Analysis
Slow down footage to analyze technique, form, and movement in sports and fitness activities.
Social Media Content
Create engaging slow-motion or time-lapse content for Instagram, TikTok, and other platforms.
Educational Videos
Speed up lengthy explanations or slow down complex processes for better understanding.
Creative Projects
Add cinematic effects to your films and videos with professional speed control.
Presentation Videos
Adjust speaking pace and demonstration speed for optimal viewer engagement.
Time-lapse Creation
Speed up long processes like construction, cooking, or artistic creation.
Frequently Asked Questions
What is motion interpolation?
Motion interpolation creates additional frames between existing frames to make slow-motion videos appear smoother. It's particularly effective for speeds below 1x but increases processing time.
Does changing speed affect audio?
Yes, audio speed is adjusted proportionally while preserving pitch. This means speech and music remain natural-sounding at different speeds.
Is the video speed changer free to use?
Yes, completely free! Change the speed of as many videos as you want, with no limits, watermarks, or hidden charges.
Are my video files kept private?
Absolutely. All processing happens locally in your browser. Your videos never get uploaded to our servers or leave your device.