TEMPO STUDIO
Video Tempo Studio
Set the pace of your footage. Slow down details or speed up a walkthrough, preview the change, then save a new MP4.
Find the right pace first
Presets, the slider and custom rates all change playback immediately. Original comparison only affects the preview; your selected rate is always used for export.
Keep picture and sound together
Retained audio follows the new tempo. Extreme speeds can introduce audio artifacts; browsers may also mute previews at some rates.
Finish on your device
Your browser processes the file locally. Replacing the source or closing the page clears the result, so download it before leaving.
Before you export
Will slow motion look smoother?
Speed changes adjust timestamps and repeat or drop frames. They do not generate new motion detail. Low frame rate footage may still appear choppy when slowed down.
Which video files can I use?
Common video containers are supported, subject to the processing engine’s codecs. Output is MP4 at the original frame rate up to 60 fps. Subtitles and additional audio tracks are omitted.
Why is a large export slow or unsuccessful?
Changing speed re-encodes the picture, and slow motion increases output duration. The 250 MB input limit does not guarantee sufficient memory. Try a shorter clip and close other tabs. A recent desktop Chrome or Edge is recommended.