Browser FFmpeg recipe
Change Frame Rate Online with FFmpeg
Create a 30 fps version of the source video.
Command
Run this FFmpeg command
ffmpeg -i input.mp4 -vf fps=30 -c:v libx264 -crf 23 -preset fast -c:a copy 30fps.mp4When to use it
- standard exports
- platform requirements
- smoother previews
How it works
- Upload the video.
- Set fps to the target frame rate.
- Run FFmpeg and download the converted video.
Option reference
| Option | What it does |
|---|---|
fps=30 | Outputs 30 frames per second. |
-crf 23 | Uses a balanced H.264 quality setting. |
-c:a copy | Keeps the original audio stream. |
Practical notes
- Increasing frame rate does not create real motion detail from the source.
- Use 24, 25, 30, or 60 depending on your target platform.
FAQ
Can I convert 60 fps to 30 fps?
Yes. Set fps=30 to drop frames into a 30 fps output.
Will this affect audio sync?
The fps filter should preserve timing while changing frame cadence.