Make a video faster or slower, with the audio kept in sync, for timelapses and slow motion.
Changing how fast a video plays is one of those edits that sounds trivial and turns into a chore. You want a long screen recording to move quicker, a cooking clip condensed into a snappy timelapse, or a tricky moment slowed down so people can actually see what happened. Playback speed in a player only affects your own viewing. This tool rewrites the file itself, so the exported video really plays at the new speed for everyone.
Load your video, pick a speed such as 0.5x or 0.75x to slow it down, or 1.25x, 1.5x, or 2x to speed it up, and run it. The tool re-times the picture and stretches or compresses the audio to match, then hands you a new file at that speed. The first run quietly loads a small in-browser media engine, which is then cached so later jobs start faster.
The important part is that the audio stays in sync and stays natural. Rather than just dropping or repeating frames, the tool adjusts the audio tempo alongside the video, so voices speed up or slow down without turning into a chipmunk squeal or a slur. The result is re-encoded to a widely compatible MP4 at a sensible quality setting, which keeps the file clean and playable while the picture holds up.
Use this when you need the speed change baked into the file, not just applied while you watch. Slowing a clip in your player does nothing for a video you are about to upload, and full editing suites are overkill when a single speed factor is all you want. If your goal is a shareable file that plays fast or slow on its own, this is the direct route.
Common jobs include compressing a ten minute screen recording into a brief timelapse, slowing a sports or dance move to study the technique, tightening a talking-head clip that drags, and speeding up a long how-to so it fits a platform's time limit. It also cleanly speeds up recordings that have no audio track at all.
It all happens in your browser, so your video is never uploaded, there is no account, and it is free. Because the encoding runs on your own hardware, a longer or higher resolution clip takes more time and leans on your device's memory, which is the only real limit here rather than any server cap.
Yes. The tool adjusts the audio tempo to match the new speed, so voices stay understandable instead of turning squeaky or muddy. Picture and sound stay locked together.
You can slow a clip to 0.5x or 0.75x, or speed it up to 1.25x, 1.5x, or 2x. Those cover most timelapse and slow-motion needs without distorting the audio too far.
The exported file is genuinely shorter in duration at 2x, roughly half the original length, because the timing is rewritten into the video. It is not a playback trick that resets when someone else opens it.
Yes. A silent screen recording or timelapse speeds up cleanly, and the tool handles the missing audio track without erroring out.
Speed changing re-encodes the video, and MP4 is the most universally compatible target, so the result plays on phones, browsers, and social platforms without fuss. The picture quality is kept at a sensible level during that step.
Slowing footage spreads the existing frames over more time, so a clip filmed at a standard frame rate can look slightly steppy at 0.5x. Footage originally recorded at a high frame rate slows down far more smoothly.
Polished Pixels. All tools. About. Contact. Every tool runs in your browser and your files are never uploaded.