Convert 30 fps to 60 fps
To convert 30 fps to 60 fps, repeat frames at a 1 : 2 ratio (or interpolate them for smoother motion). The running time and audio stay the same.
How 30 to 60 fps conversion works
Frames are repeated at a regular interval to reach the higher rate. Running time and audio stay the same, but no new motion is created, so playback looks like the original. For smoother motion, interpolate frames instead (FFmpeg minterpolate), which takes much longer and can create artifacts.
| Spec | Value |
|---|---|
| Frame ratio | 1 : 2 |
| Method | Repeat frames |
| Running time | Unchanged |
| Audio | Audio is copied unchanged (-c:a copy); the running time does not change, so sound stays in sync. |
Frame counts
| Source length | Frames at 30 fps | Frames at 60 fps | Output length |
|---|---|---|---|
| 1 second | 30 | 60 | 1 s |
| 10 seconds | 300 | 600 | 10 s |
| 1 minute | 1,800 | 3,600 | 1 min |
| 10 minutes | 18,000 | 36,000 | 10 min |
FFmpeg command
ffmpeg -i input.mp4 -vf fps=60 -c:a copy output.mp4Verified Oct 16, 2026against FFmpeg fps filter
Changelog
- : Published; FFmpeg command tested with FFmpeg 7.1.1.
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