Speed Up or Slow Down Video
Pick a speed factor and generate a faster or slower version of the video, with the audio adjusted along with it.
Your video never leaves your device — processing happens entirely in your browser.
Not sure? Turn your internet off and try — it still works.
How it works
Change a video's speed without installing anything: 1. Upload your video. 2. Pick the speed factor (0.5× to 3×). 3. Click Change speed and download the result. One limitation worth knowing: changing speed also changes the audio's pitch — higher when speeding up, lower when slowing down, the same effect as rewinding a tape or a vinyl record. The final file comes out close to the original's size, not bigger, even at high speed factors.