Is Change frame rate free? Is there a watermark?

Yes — Change frame rate is free to use with no sign-up or watermark. Very large files can still be limited by your browser's available memory and processing resources.

Do my files get uploaded to a server?

No. Change frame rate runs entirely in your browser with WebAssembly, so your MP4, MOV, WebM, MKV file never leaves your device and nothing is stored or seen by us.

What can I put in, and what do I get out?

Change frame rate accepts MP4, MOV, WebM, MKV and gives you back a MP4 file. You can also set frame rate before you run it. Actual codec support depends on what the bundled engine or browser decoder can read.

Can I control the output?

Yes — you can adjust frame rate, so you decide the balance between file size and quality.

Free tools · Compress & resize

Change frame rate

Change a video's frame rate to 15, 24, 30, or 60 fps by dropping or duplicating frames. Runs locally in your browser with no upload or watermark.

Runs entirely in your browser. Your file is never uploaded — no watermark, no account.

Drop a file or click to chooseMP4, MOV, WebM, MKV

Get a better result

Best for: Matching a 24, 30, or 60 fps delivery requirement, or reducing frame count for a secondary asset.
Input → output: Video is sampled at 15–60 fps and encoded as H.264/yuv420p MP4 with AAC audio. Playback duration remains nominally unchanged.
Quality tip: Match the destination rather than automatically choosing 60 fps. Reducing 60 to 30 can help; increasing a low-rate source rarely improves motion.
Know before running: FFmpeg duplicates or drops frames here. It does not synthesize optical-flow frames, recover motion blur, or create true slow motion from ordinary footage.
Next step: Compress video to tune delivery size after standardizing the cadence.

How to use Change frame rate

1
Choose your file. Drop a supported MP4, MOV, WebM, MKV file into the tool, or click to select one. It stays on your device — nothing is uploaded.
2
Pick your settings. Adjust the available options, then press Run. The first processing run loads the browser engine before conversion begins.
3
Download. Review the result, then download the finished file from your browser with no watermark.

Frequently asked questions

Is Change frame rate free? Is there a watermark?: Yes — Change frame rate is free to use with no sign-up or watermark. Very large files can still be limited by your browser's available memory and processing resources.
Do my files get uploaded to a server?: No. Change frame rate runs entirely in your browser with WebAssembly, so your MP4, MOV, WebM, MKV file never leaves your device and nothing is stored or seen by us.
What can I put in, and what do I get out?: Change frame rate accepts MP4, MOV, WebM, MKV and gives you back a MP4 file. You can also set frame rate before you run it. Actual codec support depends on what the bundled engine or browser decoder can read.
Can I control the output?: Yes — you can adjust frame rate, so you decide the balance between file size and quality.