Slowing a video down shows a quick moment in detail: a swing, a jump, a splash, a trick or a dance step. Choose how much slower it should play; the sound is slowed with the picture without turning deep, or it can be removed.
How to slow down a video
- Upload the video (MP4, MOV, MKV, WebM, AVI, WMV, MPEG, TS and more; up to 2 GB).
- Effect: Change the speed and 0.5× (half speed) are already chosen. The other slower speeds are 0.75× and 0.25× (four times slower).
- Under Sound, keep the sound or remove it.
- Start, and download the slower video.
What you get
- Length: the result is longer by the same factor. A 20-second clip at 0.5× lasts 40 seconds; at 0.25×, 1 minute 20 seconds.
- Frame rate: the video keeps its own frame rate (up to 60 frames per second). Each frame is shown for longer, which is done by repeating it.
- Sound at its normal pitch: voices and music are slowed down without sounding lower. At 0.25× speech becomes very drawn out, and removing the sound is often better.
- Format: MP4, MOV, MKV and WebM stay in their format; other formats become MP4. The video is re-encoded at high quality, and upright phone videos stay upright.
Smooth slow motion
Repeated frames make fast movement look jerky at half speed and below, especially in a video recorded at 24 or 30 frames per second. For smoother slow motion, the frame rate converter has a slow-motion mode that calculates new frames between the existing ones; it works best on clear, steady movement. A video recorded at 120 or 240 frames per second already has the frames it needs: slowed down here to 0.5× or 0.25×, it stays smooth.
Limits
The limit is counted on the result, which is longer than the original. At 0.5×, a 1080p video at 30 frames per second can be up to about 14 minutes long; at 0.25×, about 7 minutes. Cut the part you need first with the video trimmer.
More about what this tool reads and writes: Video Effects.