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Remotion data viz

Skill phamthanhnghia/remotion-agent-skills/skills/remotion-data-viz

Programmatic video creation agent skills suite for Remotion, modeled on HyperFrames architecture. Build explainers, product launches, motion graphics, captions, and data viz with AI.

Install
npx -y skills add phamthanhnghia/remotion-agent-skills --skill remotion-data-viz

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What its author says it does

Copied from the file, not written here

Data visualization and infographics for Remotion. Use for animated charts, counters, progress bars, SVG paths, recharts, and D3 integrations.

SKILL.md

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Remotion Data Viz

Animated data visualizations as Remotion compositions — frame-deterministic, React-based, seekable.

For the composition contract see remotion-core. For animation primitives see remotion-animation.

Core principle

Data visualizations in Remotion are animated from frame 0 to durationInFrames. All chart values are derived from useCurrentFrame() — there is no re-render on resize or data change, only a deterministic mapping of frame → visual state.

Common patterns

Animated counter

import {useCurrentFrame, useVideoConfig, interpolate} from 'remotion';

type CounterProps = {
  from: number;
  to: number;
  durationInFrames: number;
  prefix?: string;
  suffix?: string;
};

const AnimatedCounter: React.FC<CounterProps> = ({from, to, durationInFrames, prefix = '', suffix = ''}) => {
  const frame = useCurrentFrame();
  const value = interpolate(frame, [0, durationInFrames], [from, to], {
    extrapolateRight: 'clamp',
    easing: (t) => t < 0.5 ? 2 * t * t : -1 + (4 - 2 * t) * t, // ease-in-out-quad
  });

  return (
    <div style={{fontSize: 120, fontWeight: 700, color: '#fff', fontVariantNumeric: 'tabular-nums'}}>
      {prefix}{Math.round(value).toLocaleString()}{suffix}
    </div>
  );
};

Bar chart reveal

import {interpolate, useCurrentFrame} from 'remotion';

type BarProps = {label: string; value: number; maxValue: number; index: number; color: string};

const AnimatedBar: React.FC<BarProps> = ({label, value, maxValue, index, color}) => {
  const frame = useCurrentFrame();
  const STAGGER = 5;
  const DURATION = 40;

  const progress = interpolate(
    frame,
    [index * STAGGER, index * STAGGER + DURATION],
    [0, 1],
    {extrapolateLeft: 'clamp', extrapolateRight: 'clamp'}
  );

  const barWidth = (value / maxValue) * 600 * progress;

  return (
    <div style={{marginBottom: 20}}>
      <div style={{color: '#ccc', fontSize: 24, marginBottom: 8}}>{label}</div>
      <div style={{height: 48, backgroundColor: '#1e1e2e', borderRadius: 8, overflow: 'hidden'}}>
        <div
          style={{
            height: '100%',
            width: barWidth,
            backgroundColor: color,
            borderRadius: 8,
            display: 'flex',
            alignItems: 'center',
            paddingLeft: 16,
          }}
        >
          <span style={{color: 'white', fontWeight: 700}}>{Math.round(value * progress).toLocaleString()}</span>
        </div>
      </div>
    </div>
  );
};

Line chart draw (SVG)

import {interpolate, useCurrentFrame} from 'remotion';

const LineChart: React.FC<{data: number[]; width: number; height: number}> = ({data, width, height}) => {
  const frame = useCurrentFrame();
  const {durationInFrames} = useVideoConfig();

  const progress = interpolate(frame, [0, durationInFrames * 0.8], [0, 1], {extrapolateRight: 'clamp'});

  const maxVal = Math.max(...data);
  const points = data
    .slice(0, Math.ceil(data.length * progress))
    .map((v, i) => `${(i / (data.length - 1)) * width},${height - (v / maxVal) * height}`)
    .join(' ');

  return (
    <svg width={width} height={height}>
      <polyline
        points={points}
        fill="none"
        stroke="#6366f1"
        strokeWidth={4}
        strokeLinecap="round"
        strokeLinejoin="round"
      />
    </svg>
  );
};

Pie / donut reveal

const DonutChart: React.FC<{segments: {value: number; color: string}[]; size: number}> = ({segments, size}) => {
  const frame = useCurrentFrame();
  const {durationInFrames} = useVideoConfig();

  const progress = interpolate(frame, [0, durationInFrames * 0.7], [0, 1], {extrapolateRight: 'clamp'});
  const radius = size / 2 - 20;
  const cx = size / 2;
  const cy = size / 2;
  const total = segments.reduce((s, seg) => s + seg.value, 0);

  let cumulative = 0;
  const paths = segments.map((seg, i) => {
    const startAngle = (cumulative / total) * 2 * Math.PI - Math.PI / 2;
    cumulative += seg.value;
    const endAngle = (cumulative / total) * 2 * Math.PI * progress - Math.PI / 2;

    const x1 = cx + radius * Math.cos(startAngle);
    const y1 = cy + radius * Math.sin(startAngle);
    const x2 = cx + radius * Math.cos(endAngle);
    const y2 = cy + radius * Math.sin(endAngle);
    const largeArc = endAngle - startAngle > Math.PI ? 1 : 0;

    return (
      <path
        key={i}
        d={`M ${cx} ${cy} L ${x1} ${y1} A ${radius} ${radius} 0 ${largeArc} 1 ${x2} ${y2} Z`}
        fill={seg.color}
      />
    );
  });

  return <svg width={size} height={size}>{paths}</svg>;
};

Using recharts

npm install recharts

Important: recharts uses requestAnimationFrame and DOM measurements internally. Use spring() and interpolate() to compute chart data values before passing to recharts — do not rely on recharts' internal animation (it's not frame-deterministic).

import {BarChart, Bar, XAxis, YAxis} from 'recharts';

const MyChart: React.FC = () => {
  const frame = useCurrentFrame();
  const progress = interpolate(frame, [0, 60], [0, 1], {extrapolateRight: 'clamp'});

  const data = [
    {name: 'A', value: Math.round(1200 * progress)},
    {name: 'B', value: Math.round(800 * progress)},
    {name: 'C', value: Math.round(1600 * progress)},
  ];

  return (
    <BarChart width={600} height={400} data={data}>
      <XAxis dataKey="name" />
      <YAxis />
      <Bar dataKey="value" fill="#6366f1" isAnimationActive={false} />
    </BarChart>
  );
};

Always set isAnimationActive={false} on recharts components — their internal animation is not frame-deterministic.

calculateMetadata for data-driven compositions

When the composition duration depends on the data length, use calculateMetadata:

import {Composition} from 'remotion';

type DataVizProps = {data: {label: string; value: number}[]};

const dataViz = {
  component: DataVizScene,
  calculateMetadata: async ({props}: {props: DataVizProps}) => {
    const fps = 30;
    const framesPerBar = 20;
    const durationInFrames = props.data.length * framesPerBar + 60; // padding
    return {durationInFrames, fps};
  },
};

References

TaskRead
Animated counter, bar chart, line chart, pie patternsreferences/chart-patterns.md
recharts integration (isAnimationActive, data binding)references/recharts.md
D3 calculations (scale, path) with React renderingreferences/d3-in-remotion.md
calculateMetadata for dynamic durationremotion-core/references/calculate-metadata.md
spring/interpolate for data revealsremotion-keyframes

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