Change video speed
Speed up or slow down a video from 0.25× to 4× and choose whether to keep or remove the sound.
MP4, MOV, WebM or MKV · up to 500 MB · processed on your device, the file is never uploaded.
You can also drag a video onto this page.
0.25 to 4. At 2 the video lasts half as long; at 0.5 it lasts twice as long.
Your files are processed here, on your device
We do not send your file or text contents to a processing server. No account is needed and there is no daily operation quota. Individual tools have size limits to protect your device’s memory.
A connection is needed to load the site and its resources. Hosting may receive technical visit data. Favorites store only tool identifiers in this browser.
How we handle your data →How to use this tool
- Choose the video on your device or drag it onto the page.
- Adjust the options and press the main button; progress is shown while it works.
- Check the preview of the result and download it.
An example you can verify
Speed up or slow down a video from 0.25× to 4× and choose whether to keep or remove the sound.
Example input
0:06 · 2×
Expected result
0:03
Check the preview of the result and download it.
Change video speed: uses and practical guidance
Enter a speed from 0.25 to 4: at 2 the video plays twice as fast and lasts half as long, while 0.5 plays at half speed and lasts twice as long. You can keep the sound or remove it. Kept sound is resampled together with the picture, so its pitch changes: sped-up speech sounds higher and slowed speech sounds lower; the tool does not preserve pitch. Slow motion does not interpolate movement, so low speeds can look choppy. Above 1× the picture is limited to 60 frames per second by skipping frames. The video is re-encoded in the same container and everything happens on your device. Check synchronization and the first and last seconds before downloading.
Change video speed. The video is opened and processed in your device’s memory and is never sent to a server, so speed depends on your computer and the file size. Copying tracks without re-encoding is almost instant; re-encoding can take several minutes for long or high-resolution videos. While it works, the page shows progress and a cancel button. Keep the tab open and visible until it finishes, because some browsers slow down background tabs. The 500 MB limit protects device memory. If the file is larger, split it into parts first. The original is never modified: the tool creates a new file that you download.
Change video speed. Play the complete result before using it: check that picture and sound stay in sync, that no seconds are missing at the start or end, and that quality is sufficient for your purpose. Open the file in another player or in the application where you will publish it, because every platform has its own limits for duration, size and format. If the result does not play, try MP4, the most compatible format. Always keep the original video until you have verified the new one, and do not overwrite the source file. If the video contains personal data, remember that this tool does not hide faces or voices: it only changes the file.
A practical check before using the result
Change video speed. Speed up or slow down a video from 0.25× to 4× and choose whether to keep or remove the sound. Check the preview of the result and download it.
Settings and limits
Enter a speed from 0.25 to 4: at 2 the video plays twice as fast and lasts half as long, while 0.5 plays at half speed and lasts twice as long. You can keep the sound or remove it. Kept sound is resampled together with the picture, so its pitch changes: sped-up speech sounds higher and slowed speech sounds lower; the tool does not preserve pitch. Slow motion does not interpolate movement, so low speeds can look choppy. Above 1× the picture is limited to 60 frames per second by skipping frames. The video is re-encoded in the same container and everything happens on your device. Check synchronization and the first and last seconds before downloading.