Change Video Frame Rate (60fps to 30fps and More)

How to change a video's frame rate

1. Choose the video above. The file card shows its current frame rate next to the picture size and codecs.
2. Pick the target under "New frame rate": 23.976, 24, 25, 29.97, 30, 50 or 60 fps.
3. Press "Change frame rate" and keep the tab open while the progress bar runs.
4. Download the MP4. The file name ends in the new rate, for example "-30fps", and the result card says whether frames were dropped or repeated.

What happens to the frames

The tool doesn't invent new images. It works out which original frame should be on screen at each tick of the new rate and uses that one.

Going down, e.g. 60 to 30

every other frame is dropped, evenly spread. Motion is a little less smooth; nothing else changes.

Going up, e.g. 30 to 60

each frame is shown twice. The video looks the same as before, because no in-between frames are created.

Uneven steps, e.g. 25 to 24

one frame in every 25 is dropped, which can show as a slight hitch in steady pans.

Length

unchanged. A 10-minute video is still 10 minutes.

Sound

carried over with its timing unchanged, so lips stay in sync.

There is no interpolation or motion smoothing. If you want 24 fps footage to look like smooth 60 fps, that needs optical-flow software that synthesises new frames; raising the rate here only makes the file bigger. The picture is always re-encoded, so it goes through one more round of compression. The tool scales the target bitrate to the new frame rate to keep quality steady.

Converting 60fps to 30fps

This is the most common reason people look for a frame rate converter. Phones, game capture and screen recorders often record at 60 fps, and that is more than many uses need.

Keep 60 fps for fast motion you want to look fluid, such as sport and fast games, and for anything you plan to slow down later.

Frame rates in practice

• 23.976 and 24 fps: the film look. 24 is the cinema standard; 23.976 is its slightly slower relative used for film-style video in NTSC regions.
• 25 and 50 fps: the PAL standard used for television in Europe, India, Australia and much of Africa and Asia. Match these if footage will sit next to broadcast material from those regions.
• 29.97 and 30 fps: the NTSC family used in North America and Japan, and the usual default for phones and webcams. 29.97 exists for historical colour-TV reasons.
• 60 fps: smooth motion for gaming, sport and screen recordings.

The video frame rate explainer covers where these numbers come from and how to choose.

Variable frame rate footage

Phones and screen recorders often save variable frame rate (VFR) video: the rate drops when the device is busy or the scene is static. Some editors handle VFR badly, and the usual symptom is sound that slowly drifts out of sync over a long clip. The output of this tool is always a constant rate, so converting a VFR recording to the rate it nominally uses (say 30 fps) is a simple fix before editing. The variable frame rate article explains how to spot VFR, and the guide to audio and video out of sync covers other causes of drift.

What about subtitles?

Because the length doesn't change, an SRT or VTT made for the original still lines up with the converted video; the times are in seconds, not frames. You only need to convert subtitles when they are frame-based, like MicroDVD .sub files, or when they were timed to a different release whose running time differs, such as a PAL version sped up from 24 to 25 fps. In those cases the subtitle frame rate converter rescales the times. Note that this tool keeps the duration, so it does not perform a PAL-style speed-up; to change how fast the video plays, use speed up video.

Limits

• Re-encoding needs a browser that can encode video on the device: current Chrome or Edge, Safari 16.4 or later, or Firefox 130 or later on a computer.
• Speed depends on your device, the resolution and the length. A short 1080p clip is quick; an hour of 4K takes a long time in a browser tab.
• The output is MP4, using H.264 when the browser can encode it.
• HEVC (H.265) input from iPhones decodes only where the device supports it.
• Nothing is uploaded; the video is processed in the browser tab.