Does CalmClip upload my video to a server?

No. CalmClip processes everything entirely inside your browser using WebAssembly. Zero bytes of your video are ever sent to any server. Your files stay on your device at all times.

Is CalmClip free to use?

Yes. CalmClip is completely free. No account, no subscription, no hidden fees. Open the site and start editing immediately.

What video formats does CalmClip support?

CalmClip supports MP4, MOV, WebM, and MKV files. All editing and export happen locally in your browser using FFmpeg compiled to WebAssembly.

How does AI transcription work without uploading my video?

CalmClip runs the Whisper speech recognition model locally in your browser via WebAssembly. The AI model downloads once and runs entirely on your device, so your audio never leaves your machine.

Can CalmClip handle large video files?

Yes. Because CalmClip processes files locally using FFmpeg compiled to WebAssembly, it handles large files (1 GB and above) without upload delays. Editing starts immediately after you select the file.

Does CalmClip require an account or login?

No. CalmClip requires no account, no login, and no registration. Open the site, drop your video, and start editing.

How does CalmClip edit video without a server?

CalmClip compiles FFmpeg to WebAssembly (WASM), which lets it run as a native-speed binary inside your browser. The browser itself becomes the video processing engine.

Is the no-upload claim actually true?

Yes. You can verify it yourself: disconnect from the internet after the page loads and try editing and exporting. Everything still works because no network requests are needed for editing.

What is the maximum file size?

CalmClip supports files up to 4 GB. The limit is your browser and device RAM, not an upload cap.

Does it work on slow internet connections?

Once CalmClip loads in your browser, you can work offline. The only network activity is the initial page load and, if you use AI transcription, the one-time Whisper model download.

What editing tools are available?

Trim and cut, AI captions and transcription, silence removal, filler word removal, face blur, watermark overlay, aspect ratio resize, batch export, loudness normalization, audio denoising, metadata stripping, thumbnail extraction, and screen recording.

Yes. All core editing tools are free with no account required. A Pro licence unlocks AI transcription, captions, filler word removal, face blur, watermark overlay, and batch export.

Online Video Editor with No Upload | 100% Local Processing

Online Video Editor with No UploadFFmpeg and Whisper AI run inside your browser. Your file never leaves your machine. Edit video online without uploading to any server. CalmClip runs FFmpeg and Whisper entirely in your browser. Trim, caption, resize, and export locally. Free.

Trim and cut video clips

AI captions and transcription (local, no upload)

Remove silence and filler words

Face blur (local processing)

Resize to any aspect ratio

Loudness normalization

Metadata stripping

Free, no install, no account