> ## Documentation Index
> Fetch the complete documentation index at: https://hyperframes-fix-nested-composition-media-inpoint.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Rounded Media Grid

> N-up rounded-corner media grid (2-up, 3-up, 4-up, 3x2, hero plus two): per-cell inside-scale framing, staggered box-in entrance, slow settle

export const InstallCommand = ({command, item}) => {
  const [copied, setCopied] = React.useState(false);
  const [tuned, setTuned] = React.useState("");
  React.useEffect(() => {
    if (!item) return;
    const read = () => {
      try {
        const raw = new URLSearchParams(window.location.search).get(`vars-${item}`);
        if (!raw) return setTuned("");
        const parsed = JSON.parse(raw);
        if (!parsed || typeof parsed !== "object" || Array.isArray(parsed)) return setTuned("");
        if (Object.keys(parsed).length === 0) return setTuned("");
        setTuned(` --vars '${JSON.stringify(parsed)}'`);
      } catch {
        setTuned("");
      }
    };
    read();
    window.addEventListener("hf-vars-changed", read);
    window.addEventListener("popstate", read);
    return () => {
      window.removeEventListener("hf-vars-changed", read);
      window.removeEventListener("popstate", read);
    };
  }, [item]);
  const fullCommand = `${command}${tuned}`;
  const copy = async () => {
    try {
      if (navigator.clipboard && window.isSecureContext) {
        await navigator.clipboard.writeText(fullCommand);
      } else {
        const previous = document.activeElement;
        const scratch = document.createElement("textarea");
        scratch.value = fullCommand;
        scratch.setAttribute("readonly", "");
        scratch.style.position = "fixed";
        scratch.style.opacity = "0";
        document.body.appendChild(scratch);
        scratch.select();
        document.execCommand("copy");
        document.body.removeChild(scratch);
        previous?.focus?.();
      }
      setCopied(true);
      setTimeout(() => setCopied(false), 2000);
    } catch {}
  };
  return <div className="hf-install-command not-prose my-4 flex items-stretch overflow-hidden rounded-xl border border-zinc-200 bg-zinc-50 dark:border-zinc-800 dark:bg-zinc-900">
      <code className="flex-1 overflow-x-auto whitespace-nowrap border-r border-zinc-200 px-4 py-3 font-mono text-sm text-zinc-800 dark:border-zinc-800 dark:text-zinc-100">
        {fullCommand}
      </code>
      <button type="button" onClick={copy} data-copied={copied ? "true" : "false"} aria-label={`Copy ${command} to the clipboard`} className="hf-install-copy">
        <svg className="hf-install-copy-clipboard" xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 18 18" fill="none" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round" aria-hidden="true">
          <path d="M14.25 5.25H7.25C6.14543 5.25 5.25 6.14543 5.25 7.25V14.25C5.25 15.3546 6.14543 16.25 7.25 16.25H14.25C15.3546 16.25 16.25 15.3546 16.25 14.25V7.25C16.25 6.14543 15.3546 5.25 14.25 5.25Z" />
          <path d="M2.80103 11.998L1.77203 5.07397C1.61003 3.98097 2.36403 2.96397 3.45603 2.80197L10.38 1.77297C11.313 1.63397 12.19 2.16297 12.528 3.00097" />
        </svg>
        <svg className="hf-install-copy-check" xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 18 18" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" aria-hidden="true">
          <path d="M2.75 9.5L6.5 13.25L15.25 4.5" />
        </svg>
      </button>
      <span className="hf-install-copy-status" role="status" aria-live="polite">
        {copied ? "Copied" : ""}
      </span>
    </div>;
};

<iframe className="w-full aspect-video rounded-xl border-0 bg-zinc-100 dark:bg-zinc-800" title="mk-placeholder-grid preview" loading="lazy" srcDoc={`<!doctype html><html><head><meta charset="utf-8"><style>html,body{margin:0;height:100%;overflow:hidden;background:transparent}hyperframes-player{display:block;width:100%;height:100%}</style><script src="https://cdn.jsdelivr.net/npm/@hyperframes/player@0.7/dist/hyperframes-player.global.js"><\/script></head><body><script>fetch("/public/catalog/blocks/mk-placeholder-grid.json").then(function(r){return r.json()}).then(function(d){var p=document.createElement("hyperframes-player");p.setAttribute("srcdoc",d.html);p.setAttribute("controls","");p.setAttribute("autoplay","");p.setAttribute("loop","");p.setAttribute("muted","");p.setAttribute("poster","https://static.heygen.ai/hyperframes-oss/docs/images/catalog/blocks/mk-placeholder-grid.png");document.body.appendChild(p)});<\/script></body></html>`} />

## Install

<InstallCommand command="npx hyperframes add mk-placeholder-grid" item="mk-placeholder-grid" />

That writes one file: `compositions/mk-placeholder-grid.html`.

## Add it to your video

It runs for 8 seconds at 1920×1080. Paste this into your composition:

```html index.html theme={null}
<div
  data-composition-id="mk-placeholder-grid"
  data-composition-src="compositions/mk-placeholder-grid.html"
  data-start="0"
  data-duration="8"
  data-track-index="1"
  data-width="1920"
  data-height="1080"
></div>
```

Move it in time with `data-start`. Put it on a different timeline row with
`data-track-index`. See [data attributes](/concepts/data-attributes) for the rest.

## Source

<Accordion title={`mk-placeholder-grid.html`}>
  ```html theme={null}
  <!doctype html>
  <html lang="en">
    <head>
      <meta charset="utf-8" />
      <script src="https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/gsap.min.js"></script>
      <style>
        *,
        *::before,
        *::after {
          margin: 0;
          padding: 0;
          box-sizing: border-box;
        }
        body {
          background: transparent;
          overflow: hidden;
        }
        #mk-pg-root {
          /* ---- mk tokens: override in the host to re-skin the family ---- */
          --mk-font: "Inter", -apple-system, sans-serif;
          --mk-ink-dim: #6e6e73;
          --mk-paper: #ffffff;
          --mk-blob-1: #ff7ac8;
          --mk-blob-2: #45d6c8;
          --mk-accent-dark: #7d5cff;
          --mk-blob-1-soft: #ffd3ec;
          --mk-blob-2-soft: #d9fff8;
          --mk-accent-dark-soft: #cabdff;
          --mk-well-warm: #ffb86b;
          --mk-well-warm-soft: #ffe3c2;
          --mk-well-sky: #5cb8ff;
          --mk-well-sky-soft: #cfe9ff;
          --mk-well-rose: #ff8f8f;
          --mk-well-rose-soft: #ffd6d6;
          --mk-well-num: rgba(255, 255, 255, 0.9);
          --mk-radius-card: 40px;
          --mk-shadow: 0 24px 64px rgba(0, 0, 0, 0.16);

          position: relative;
          width: 1920px;
          height: 1080px;
          overflow: hidden;
          background: transparent; /* pair with mk-background beneath for the gradient backdrop */
        }
        .mk-pg-cell {
          position: absolute;
          border-radius: var(--mk-radius-card);
          overflow: hidden;
          background: var(--mk-paper);
          box-shadow: var(--mk-shadow);
        }
        .mk-pg-media {
          position: absolute;
          inset: 0;
          width: 100%;
          height: 100%;
          object-fit: cover;
        }
        /* empty drop-zone well: soft gradient + index numeral */
        .mk-pg-well {
          position: absolute;
          inset: 0;
          display: flex;
          align-items: center;
          justify-content: center;
        }
        .mk-pg-well-num {
          font-family: var(--mk-font);
          font-weight: 600;
          font-size: 88px;
          letter-spacing: -0.02em;
          color: var(--mk-well-num);
        }
      </style>
    </head>
    <body>
      <div
        id="mk-pg-root"
        data-composition-id="mk-placeholder-grid"
        data-start="0"
        data-duration="8"
        data-width="1920"
        data-height="1080"
      >
        <div id="mk-pg-grid"></div>
        <div
          id="mk-pg-drv"
          class="clip"
          data-start="0"
          data-duration="8"
          data-track-index="0"
          style="position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none"
        ></div>
      </div>
      <script>
        (function () {
          window.__timelines = window.__timelines || {};

          /* ---- published parameters (inspector-style CONFIG) ---- */
          var CONFIG = {
            // no scheme param — scheme-agnostic; re-skin via the --mk-* tokens
            layout: "1+2", // "2up" | "3up" | "4up" | "3x2" | "1+2" (hero left + two stacked)
            margin: 120, // outer margin, px
            gap: 40, // px between cells
            radius: 40, // cell corner radius (rounded-edge look)
            // One entry per cell (in layout order). src: image path, or null for a
            // styled drop-zone well. insideScale: media scale inside the mask —
            // an "inside scale" convention (1 = cover-fit).
            cells: [
              { src: null, insideScale: 1 },
              { src: null, insideScale: 1 },
              { src: null, insideScale: 1 },
            ],
            kenBurns: true, // slow media settle inside the mask
            stagger: 0.15, // "box, box, box" entrance
            animationIn: true,
            animationOut: true,
          };

          /* decorative fills for empty wells (cycled) */
          var WELL_FILLS = [
            "linear-gradient(135deg, var(--mk-blob-1) 0%, var(--mk-blob-1-soft) 100%)",
            "linear-gradient(135deg, var(--mk-blob-2) 0%, var(--mk-blob-2-soft) 100%)",
            "linear-gradient(135deg, var(--mk-accent-dark) 0%, var(--mk-accent-dark-soft) 100%)",
            "linear-gradient(135deg, var(--mk-well-warm) 0%, var(--mk-well-warm-soft) 100%)",
            "linear-gradient(135deg, var(--mk-well-sky) 0%, var(--mk-well-sky-soft) 100%)",
            "linear-gradient(135deg, var(--mk-well-rose) 0%, var(--mk-well-rose-soft) 100%)",
          ];

          var W = 1920,
            H = 1080,
            DUR = 8;

          function rects(layout, m, g) {
            var iw = W - 2 * m,
              ih = H - 2 * m;
            function grid(cols, rows) {
              var cw = (iw - (cols - 1) * g) / cols,
                ch = (ih - (rows - 1) * g) / rows,
                out = [];
              for (var r = 0; r < rows; r++)
                for (var c = 0; c < cols; c++)
                  out.push({ x: m + c * (cw + g), y: m + r * (ch + g), w: cw, h: ch });
              return out;
            }
            if (layout === "2up") return grid(2, 1);
            if (layout === "3up") return grid(3, 1);
            if (layout === "4up") return grid(2, 2);
            if (layout === "3x2") return grid(3, 2);
            /* "1+2": hero left (58%), two stacked right */
            var w1 = Math.round((iw - g) * 0.58),
              w2 = iw - g - w1,
              h2 = (ih - g) / 2;
            return [
              { x: m, y: m, w: w1, h: ih },
              { x: m + w1 + g, y: m, w: w2, h: h2 },
              { x: m + w1 + g, y: m + h2 + g, w: w2, h: h2 },
            ];
          }

          var root = document.getElementById("mk-pg-root");
          var grid = document.getElementById("mk-pg-grid");
          var R = rects(CONFIG.layout, CONFIG.margin, CONFIG.gap);

          var cells = [],
            medias = [];
          R.forEach(function (r, i) {
            var conf = CONFIG.cells[i] || {};
            var cell = document.createElement("div");
            cell.id = "mk-pg-cell-" + i;
            cell.className = "mk-pg-cell";
            cell.style.left = r.x + "px";
            cell.style.top = r.y + "px";
            cell.style.width = r.w + "px";
            cell.style.height = r.h + "px";
            cell.style.borderRadius = CONFIG.radius + "px";

            var inner;
            if (conf.src) {
              inner = document.createElement("img");
              inner.className = "mk-pg-media";
              inner.src = conf.src;
            } else {
              inner = document.createElement("div");
              inner.className = "mk-pg-well";
              inner.style.background = WELL_FILLS[i % WELL_FILLS.length];
              var num = document.createElement("span");
              num.className = "mk-pg-well-num";
              num.textContent = String(i + 1);
              inner.appendChild(num);
            }
            inner.id = "mk-pg-inner-" + i;
            inner.setAttribute("data-layout-allow-overflow", ""); // ken-burns scales past the mask by design
            cell.appendChild(inner);
            grid.appendChild(cell);
            cells.push(cell);
            medias.push(inner);

            gsap.set(inner, { scale: conf.insideScale || 1 });
          });

          var tl = gsap.timeline({ paused: true });

          cells.forEach(function (cell, i) {
            var t0 = (CONFIG.animationIn ? 0.3 : 0) + i * CONFIG.stagger;

            if (CONFIG.animationIn) {
              gsap.set(cell, { opacity: 0, scale: 0.92, y: 28 });
              tl.to(cell, { opacity: 1, scale: 1, y: 0, duration: 0.65, ease: "power3.out" }, t0);
            }

            if (CONFIG.kenBurns) {
              var base = (CONFIG.cells[i] && CONFIG.cells[i].insideScale) || 1;
              tl.fromTo(
                medias[i],
                { scale: base * 1.06 },
                { scale: base, duration: DUR - t0 - 0.6, ease: "sine.out" },
                t0,
              );
            }
          });

          /* exit + hard kill */
          if (CONFIG.animationOut) {
            tl.to(grid, { opacity: 0, y: -20, duration: 0.4, ease: "power2.in" }, DUR - 0.5);
          }
          tl.set(root, { visibility: "hidden" }, DUR - 0.02);

          window.__timelines["mk-placeholder-grid"] = tl;
        })();
      </script>
    </body>
  </html>
  ```
</Accordion>

Tagged `placeholder` `media` `grid` `minimal`.

## Related topics

* [Browse the complete Catalog](/catalog)
* [Add assets and Catalog items in Studio](/studio/assets-and-blocks)
* [Build a richer composition](/go-further)
