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 know where to put chapter breaks?

CalmClip analyzes the word-level transcript generated by Whisper and identifies topic transitions based on the content of what was said.

Does chapter generation require Pro?

Yes. Chapter generation requires AI transcription, which is a Pro feature.

What format does the chapter list use?

The output uses the YouTube chapter format: a timestamp followed by the chapter title on each line, starting with 0:00 for the first chapter.

Can I rename the generated chapters?

Yes. Every generated chapter title is editable before you copy the list.

How many chapters will it generate?

The number depends on your video content. A 10-minute tutorial might get 4 to 6 chapters. A 60-minute interview might get 8 to 12.

Does it work for non-English videos?

Yes. Whisper detects the language automatically. Chapter generation works on any language the transcription supports.

Generate YouTube Chapters Automatically | AI Chapter Generator

Generate Video Chapters AutomaticallyAI reads your transcript, finds topic breaks, and formats YouTube chapter timestamps. Auto-generate YouTube chapter timestamps and titles from your video transcript. Local Whisper AI finds the topic breaks. No upload. Pro feature.

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