The sound keeps its natural pitch at any speed, or you can remove it.

Do my videos leave my device?

No. Videos are processed in your browser, on your device. There's no upload, so even large files start right away.

Is there a size limit?

No limits from us. Long or 4K videos need more memory and time; phones manage smaller files best.

Make a video play faster, like a timelapse.

Drop a video to change its speedor paste with ⌘V. Your files stay on your device.

MP4MOVWebMMKVAVI

Good to know: The sound keeps its natural pitch at any speed, or you can remove it.
Do my videos leave my device?: No. Videos are processed in your browser, on your device. There's no upload, so even large files start right away.
Is there a size limit?: No limits from us. Long or 4K videos need more memory and time; phones manage smaller files best.

Ready-made settings for common jobs.