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.

What image formats work for watermarks?

PNG is strongly recommended because it supports transparency. JPEG works but will show a white or colored background.

Does watermarking require Pro?

Yes. Watermark overlay is a Pro feature.

Can I control the watermark opacity?

Yes. Adjust the opacity in the watermark panel before exporting.

Is the original video file changed?

No. CalmClip exports a new file with the watermark. Your original is untouched.

Can I place the watermark anywhere in the frame?

Yes. Drag it to any position in the preview.

Does the watermark appear in all export formats?

Yes. It is burned into the video track regardless of the export format.

Add a Watermark to Video Free | No Upload

Add a Watermark to Your VideoOverlay your logo onto video locally. No upload. No cloud render farm. Overlay your logo or brand image onto video before export. CalmClip burns watermarks in locally using FFmpeg. No upload, no cloud render farm.

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