Dim Progress

The whole phrase sits on screen dimmed and each word brightens the moment it is spoken, with no motion at all

Installation

$ pnpm dlx shadcn@latest add @remocn/caption-dim-progress

Usage

CaptionDimProgress shows the whole page at once with every upcoming word dimmed. As the voice reaches a word it brightens to full strength and stays there, so the bright part of the line is always what has been said. Nothing moves and nothing changes colour, which keeps the captions calm over busy footage. The component renders only the text block, so place it inside your own AbsoluteFill — see Positioning.

import { AbsoluteFill } from "remotion";
import { CaptionDimProgress } from "@/components/remocn/caption-dim-progress";
import captions from "./captions.json";
 
export const MyScene = () => (
  <AbsoluteFill
    style={{
      justifyContent: "flex-end",
      alignItems: "center",
      paddingBottom: 108,
      paddingInline: 192,
    }}
  >
    <CaptionDimProgress captions={captions} dimOpacity={0.35} />
  </AbsoluteFill>
);

Props

Prop	Type	Default	Description
`captions`	`Caption[]`	`—`	The timed transcript, in the `Caption` shape from `@remotion/captions`. Times are relative to the start of the surrounding `Sequence`.
`combineTokensWithinMilliseconds`	`number`	`1200`	How much speech one page may span before the next word starts a new page. Pages also break at the end of a sentence and on any pause of at least `holdMs` (300 ms minimum).
`holdMs`	`number`	`600`	How long a page stays after its last word when the next page is not already due. It fades out at the end of the hold.
`dimOpacity`	`number`	`0.35`	Opacity of words the voice has not reached yet. Each word brightens to full over about 90ms as it is spoken.
`fontSize`	`number`	`64`	Font size in pixels.
`fontWeight`	`number`	`800`	Font weight. The font itself is inherited.
`color`	`string`	`"#ffffff"`	Text colour, the same for spoken and upcoming words.
`shadow`	`boolean`	`true`	A tight text shadow that keeps the caption legible over bright footage.
`className`	`string`	`—`	Classes for the text block — width, font family, `uppercase`.

Underline

A bar slides under the word being spoken, travelling from word to word while the text itself stays untouched

Weight

The word being spoken swells from a light weight to a heavy one and relaxes as the voice moves on, with no layout shift