captionseasy-render

This is the optional rendering add-on for captionseasy. It renders CaptionsEasy captions on your machine with Remotion and headless Chrome. It can produce:

• An MP4 with the captions burned in, keeping the original audio.
• A transparent captions-only overlay at the video's size and length, as ProRes 4444 .mov or VP9 .webm.

npm i captionseasy captionseasy-render
npx captionseasy talk.mp4 --look 12 --words talk.words.json            # -> talk.captioned.mp4
npx captionseasy talk.mp4 --look 12 --words talk.words.json --overlay  # -> talk.captions.mov

import { render } from "captionseasy"; // loads this add-on on demand
await render({ video: "talk.mp4", words, look: 12, mode: "burn" });

• Size: about 75 MB installed, including @remotion/renderer and its ffmpeg. A headless Chrome (about 100 MB) downloads on the first render.
• No build step at your end: the caption composition ships pre-bundled, so webpack never runs on your machine.
• Transcription: to caption a video without words, also install captionseasy-transcribe.

Licence: MIT. Rendering uses Remotion. Remotion is free for individuals and for companies of up to 3 people; larger companies need a Remotion company licence.