Change video speed
Speed up or slow down a video, from 0.25× to 4× or any speed you enter. Voices keep their pitch. Processing stays on your device.
Drop a video to change its speed
Speed it up or slow it down, from 0.25× to 4× or any speed you enter. The file stays in its original format.
Any media file this browser’s engine can read.
How to speed up or slow down a video
Choose 0.5×, 1.5×, 2×, or your own speed and preview it before you export. The sound is time-stretched so voices keep their normal pitch, or you can let the pitch follow the speed, or remove the sound. The video is processed in your browser, without uploading it.
Step 1
Choose a videoPick the clip to speed up or slow down.Step 2
Set the speedChoose a preset or enter a speed, and preview it.Step 3
Download the resultExport the video at its new speed.
What to expect
- Supported inputs
- Any media file this browser’s engine can read.
- What happens
- The picture and sound are re-encoded at the new speed and saved in the source format. Sped-up video keeps the original frame rate; slowed video shows each frame for longer. Only the main video and audio tracks are kept.
- Limits
- A video track is required. Speeds range from 0.1× to 100×. Slowing down does not create new frames, so very slow speeds can look choppy.
Private by design
Your video stays on your device
Mastershot processes your file locally in this browser. It does not need to be uploaded to a server, and you do not need an account to use the tool.
- No upload
- No signup
- No watermark