What is frame rate (fps) and why would I want to change it?

Frame rate is how many individual images (frames) make up one second of video. Common reasons to change it include matching a platform's requirements, reducing file size by lowering fps, or converting footage to match another video's frame rate before combining them.

Will lowering the frame rate make the video look choppier?

Reducing fps means fewer frames per second are shown, which can make fast motion look less smooth, especially at very low frame rates — the effect is more noticeable in action-heavy footage than in mostly-static content like a talking-head video.

Can I increase the frame rate above what the original video was recorded at?

Yes, though this involves generating additional frames rather than capturing genuinely new motion detail, since the source footage doesn't contain more temporal information than it was originally recorded with.

Does changing frame rate affect video length or audio sync?

The tool is built to adjust frame rate while keeping the video's duration and audio synchronization intact.

What are common frame rate targets?

24fps is standard for a cinematic look, 30fps is common for general video and broadcast, and 60fps is often used for smooth motion in sports or gaming footage — the right target depends on your intended use.

Is my video uploaded to a server?

No. Every operation runs locally in your browser using a real FFmpeg engine compiled to WebAssembly. Your video is never transmitted anywhere.

Change Video FPS

Retarget a video's frame rate up or down.

Processed entirely in your browser — your file is never uploaded anywhere.

Why change video frame rate with Tools Root

Frame rate mismatches cause real problems — combining footage from two different cameras with different fps, meeting a specific platform's technical requirements, or reducing file size by lowering an unnecessarily high frame rate for content that doesn't need it.

Real re-encoding, duration and sync preserved

Changing frame rate through actual re-encoding, rather than simply relabeling metadata, means the output genuinely plays at the new frame rate while keeping the video's length and audio synchronization correct.

Common use cases

Matching frame rates between clips from different cameras before editing them together, reducing an unnecessarily high frame rate to save file size, converting footage to a cinematic 24fps look, or meeting a specific platform's frame rate requirement for upload.

How to change a video's frame rate

1Upload your video file.
2Choose your target frame rate (fps).
3The tool re-encodes the video at the new frame rate.
4Download your video with the updated frame rate.

Frequently asked questions

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