About this tool
Turn a slow screen recording into a brisk demo, compress a long process into a timelapse, or slow a clip down to study it. Video and audio are retimed together and the audio pitch is corrected, so voices stay natural instead of turning into chipmunks or growls. The result is a standard MP4.
How to use it
- Drop your MP4, MOV, WebM or MKV file into the box above, or click to browse. Nothing is uploaded.
- Adjust the options if you want; the defaults suit most files.
- Click the button and wait a moment.
- Download the result.
Questions
Does slowing down add frames?
No, frames are shown for longer, so 0.25× looks choppy on low-frame-rate sources. 0.5× on 60 fps footage looks smooth.
Can I remove the audio instead of retiming it?
Yes: run the clip through Mute Video first.
Is it free, are files uploaded, which browsers work: the general questions are answered once for the whole site.