Convert any video to 120 frames per second online. 120 fps is a high frame rate for slow-motion editing and 120 Hz displays. Upload a clip in any common format and download it re-timed to exactly 120 fps.
If your source has fewer frames per second than 120, frames are duplicated — or, with motion interpolation on, real new in-between frames are generated for visibly smoother motion. If it has more, frames are dropped evenly. Duration and audio never change.
| Method | Duplication/interpolation when increasing fps, even resampling when decreasing |
|---|---|
| Output | MP4 — H.264 video (CRF 20), AAC audio, web-optimized (faststart) |
| Duration & audio | Unchanged, stays in sync |
| Input formats | MP4, MOV, WebM, MKV, AVI… anything FFmpeg reads |
| Privacy | Processed on our server, auto-deleted after 1 hour, never shared |
It re-times your video to exactly 120 frames per second by duplicating, interpolating or dropping frames — without changing length, resolution or audio.
Yes when increasing the frame rate and you want visibly smoother motion — it generates real new frames instead of duplicating. Leave it off when decreasing fps; it has no benefit there.
MP4, MOV, WebM, MKV, AVI… anything FFmpeg reads. Output is a widely compatible MP4 — H.264 video (CRF 20), AAC audio, web-optimized (faststart).
Yes — free, no signup, no watermark. Files up to 100 MB, deleted automatically after one hour.