Video Speed Changer

Speed up or slow down any video online for free. Adjust playback speed for MP4, AVI, MKV, MOV, WebM. No signup, no watermarks. Up to 100 MB.

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Tap to choose your video

or click to choose video

Your files are secure. All uploads encrypted via HTTPS. Files automatically deleted from our servers within 2 hours.

How to Change Video Speed

1

Upload

Drag and drop your video into the area above, or click Choose Video to browse your device. Supports MP4, AVI, MKV, MOV, WebM, WMV, and FLV.

2

Select Speed

Choose your desired speed: 0.5x or 0.75x to slow down, 1.5x or 2x to speed up. Then click Change Speed.

3

Download

Click Download Video to save the speed-adjusted file. That's it — no registration, no email required.

Speed Options Explained

Speed Effect Best For Example
0.5x Half speed (slow motion) Analyzing fast action, sports replays, tutorial details A 1-minute clip becomes 2 minutes
0.75x Slightly slower Following complex tutorials, language learning, dance choreography A 1-minute clip becomes 1 min 20 sec
1.5x 50% faster Watching lectures, podcasts, long presentations A 10-minute video becomes 6 min 40 sec
2x Double speed Timelapse effects, quick reviews, skimming content A 10-minute video becomes 5 minutes

Popular Use Cases

Timelapse Videos

Turn a regular recording into a timelapse by speeding it up to 2x. Perfect for construction progress, cooking processes, art creation, sunset recordings, or any long event you want to condense into a short, engaging clip. Speed up hours of footage into minutes of captivating content.

Slow Motion Replays

Slow down action sequences to 0.5x to catch every detail. Ideal for sports analysis, dance move breakdowns, wildlife observation, or examining fast-moving mechanical processes. See what the naked eye misses by playing your video at half speed.

Presentations & Lectures

Speed up recorded lectures, webinars, and conference talks to 1.5x to save time without losing comprehension. Studies show most people can comfortably follow speech at 1.5x speed. Cut a 60-minute lecture down to 40 minutes while retaining all the information.

Social Media Content

Create engaging social media videos by adjusting speed for dramatic effect. Speed up mundane tasks for satisfying time-lapse content, or slow down key moments for emphasis. Many viral videos use speed changes to make everyday activities more interesting and shareable.

Supported Video Formats

Format Description Common Use
MP4 MPEG-4 Part 14. Most widely supported video format using H.264/H.265 codecs. Web, mobile, streaming, social media
AVI Audio Video Interleave by Microsoft. Legacy container supporting multiple codecs. Windows apps, older video archives
MKV Matroska Video. Open-source container supporting unlimited tracks. High-quality video storage, subtitles, multiple audio tracks
MOV QuickTime File Format by Apple. High-quality container for Apple ecosystem. iPhone/iPad recordings, Final Cut Pro, macOS
WebM Open format by Google using VP8/VP9 codecs. Optimized for the web. Web browsers, HTML5 video, YouTube
WMV Windows Media Video by Microsoft. Compressed format for streaming. Windows Media Player, email attachments
FLV Flash Video. Compact streaming format, legacy but still common. Archived web videos, older streaming content

Change Video Speed on Any Device

On Windows

Most Windows video editors can change speed, but they require installation and learning a new interface. Our online tool works directly in Chrome, Edge, or Firefox — no software needed. Upload your video, pick the speed, and download the result in seconds. Perfect for quick speed adjustments without opening a full editing suite.

On Mac

iMovie on Mac can adjust video speed, but it requires importing footage into a project and exporting afterward. Our online speed changer skips all that. Works in Safari, Chrome, or Firefox on any Mac. Simply drag your video file, choose the speed multiplier, and download. No project files, no timelines, no complexity.

On Linux

Linux users can change video speed with FFmpeg command-line tools, but the syntax for speed filters is complex and error-prone. Our online tool provides the same result through a simple browser interface. Works in Firefox, Chrome, or Chromium on any Linux distribution. No packages to install, no commands to memorize.

On Mobile

Changing video speed on iPhone or Android typically requires downloading a dedicated video editing app. Our tool works directly in your mobile browser — Safari on iOS or Chrome on Android. Tap to select your video, choose the speed, and download the adjusted file. No app installation, no storage space wasted on editing software.

Frequently Asked Questions

Yes. Our video speed changer re-encodes the video while maintaining the original resolution, codec, and quality settings. The output file retains the same visual clarity as your source video. There is no noticeable quality loss when speeding up or slowing down.
Yes. When you change the video speed, the audio track is adjusted proportionally. At 2x speed, the audio plays twice as fast. At 0.5x speed, the audio plays at half speed. The audio stays perfectly synchronized with the video throughout the entire clip.
There is no strict time limit — the constraint is the file size, which is capped at 100 MB. For a standard 720p MP4 video, this typically allows videos up to 10-15 minutes long. Higher resolution or less compressed videos may have shorter maximum durations due to larger file sizes.
Our video speed changer supports all popular video formats: MP4, AVI, MKV, MOV, WebM, WMV, and FLV. The output file is saved in the same format as your input, so an MP4 input produces an MP4 output with the adjusted speed.
Yes. Convertio.com offers free video speed changing with no watermarks, no registration, and no email required. Upload your video, select the speed, and download the result. Your files are encrypted during transfer and automatically deleted from our servers within 2 hours.

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