> ## 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.

# Comment Cards

> Social comments typing on over footage: avatar pop, username and time, per-character typewriter, likes row; image avatars or initials chips

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="yt-comment-card 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/yt-comment-card.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/yt-comment-card.png");document.body.appendChild(p)});<\/script></body></html>`} />

## Install

<InstallCommand command="npx hyperframes add yt-comment-card" item="yt-comment-card" />

That writes one file: `compositions/yt-comment-card.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="yt-comment-card"
  data-composition-src="compositions/yt-comment-card.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={`yt-comment-card.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;
        }
        #yt-cc-root {
          /* ---- yt tokens: override in the host to re-skin the family ---- */
          --yt-font: "Inter", -apple-system, sans-serif;
          --yt-ink: #1d1d1f;
          --yt-ink-dim: #5a5a5f;
          /* overlay-scheme text over footage — distinct from the --yt-ink board tokens */
          --yt-text: #ffffff;
          --yt-text-dim: rgba(255, 255, 255, 0.72);
          --yt-red: #e62e2e;
          --yt-cyan: #35c8d9;
          --yt-scanline-alpha: 0.04;
          --yt-scanline-gap: 3px;

          position: relative;
          width: 1920px;
          height: 1080px;
          overflow: hidden;
          background: transparent; /* overlays footage or a yt-lcd board */
          font-family: var(--yt-font);
        }
        /* optional full-frame LCD pass while comments are up */
        #yt-cc-scan {
          position: absolute;
          inset: 0;
          display: none;
          background: repeating-linear-gradient(
            0deg,
            rgba(0, 0, 0, var(--yt-scanline-alpha)) 0 1px,
            transparent 1px var(--yt-scanline-gap)
          );
        }
        #yt-cc-col {
          position: absolute;
          display: flex;
          flex-direction: column;
          gap: 40px;
        }
        .yt-cc-card {
          display: flex;
          gap: 22px;
          align-items: flex-start;
        }
        .yt-cc-avatar {
          flex: none;
          width: 64px;
          height: 64px;
          border-radius: 50%;
          overflow: hidden;
          display: flex;
          align-items: center;
          justify-content: center;
          font-weight: 700;
          font-size: 26px;
          color: #ffffff;
          box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35);
        }
        .yt-cc-avatar img {
          width: 100%;
          height: 100%;
          object-fit: cover;
        }
        .yt-cc-meta {
          display: flex;
          align-items: baseline;
          gap: 14px;
        }
        .yt-cc-user {
          font-weight: 700;
          font-size: 27px;
        }
        .yt-cc-time {
          font-weight: 400;
          font-size: 23px;
        }
        .yt-cc-text {
          margin-top: 8px;
          font-weight: 500;
          font-size: 34px;
          line-height: 1.35;
          letter-spacing: -0.01em;
          max-width: 860px;
        }
        .yt-cc-text .ch {
          opacity: 0;
        }
        .yt-cc-row {
          margin-top: 12px;
          display: flex;
          align-items: center;
          gap: 10px;
          font-weight: 600;
          font-size: 22px;
          opacity: 0;
        }
        .yt-cc-row svg {
          width: 24px;
          stroke-width: 2.4;
          stroke-linecap: round;
          stroke-linejoin: round;
          fill: none;
        }
        .yt-cc-reply {
          margin-left: 18px;
          letter-spacing: 0.1em;
        }
        /* scheme: overlay (white over footage, w/ shadow) vs light (ink on boards) */
        .yt-overlay .yt-cc-user,
        .yt-overlay .yt-cc-text {
          color: var(--yt-text);
          text-shadow: 0 2px 16px rgba(0, 0, 0, 0.55);
        }
        .yt-overlay .yt-cc-time,
        .yt-overlay .yt-cc-row {
          color: var(--yt-text-dim);
          text-shadow: 0 2px 12px rgba(0, 0, 0, 0.5);
        }
        .yt-overlay .yt-cc-row svg {
          stroke: var(--yt-text-dim);
        }
        .yt-light .yt-cc-user,
        .yt-light .yt-cc-text {
          color: var(--yt-ink);
        }
        .yt-light .yt-cc-time,
        .yt-light .yt-cc-row {
          color: var(--yt-ink-dim);
        }
        .yt-light .yt-cc-row svg {
          stroke: var(--yt-ink-dim);
        }
      </style>
    </head>
    <body>
      <div
        id="yt-cc-root"
        data-composition-id="yt-comment-card"
        data-start="0"
        data-duration="8"
        data-width="1920"
        data-height="1080"
      >
        <div id="yt-cc-scan"></div>
        <div id="yt-cc-col"></div>
        <div
          id="yt-cc-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) ----
             Social comments typing on over footage — creator-style
             comment cards. avatar: image path, or null -> initials chip. */
          var CONFIG = {
            scheme: "overlay", // "overlay" (white over footage) | "light" (ink on boards)
            comments: [
              {
                avatar: null,
                initials: "PW",
                avatarHue: 210, // initials-chip hue when no image
                username: "@pixelwaves",
                time: "2 days ago",
                text: "Your videos are the best!",
                likes: 47,
              },
              {
                avatar: null,
                initials: "FR",
                avatarHue: 340,
                username: "@framerate",
                time: "1 day ago",
                text: "That camera move at 0:12 though 🔥",
                likes: 12,
              },
            ],
            x: 140,
            y: null, // null = vertically centered
            typeCharDelay: 0.024, // s per character (capped so a comment types <= 2.2s)
            scanlines: false, // full-frame LCD pass while comments are up
            animationIn: true,
            animationOut: true,
          };

          var DUR = 8;
          function clamp(v, lo, hi) {
            return Math.min(hi, Math.max(lo, v));
          }
          var OUT = clamp(DUR * 0.06, 0.25, 0.6);

          var root = document.getElementById("yt-cc-root");
          var col = document.getElementById("yt-cc-col");
          root.classList.add(CONFIG.scheme === "light" ? "yt-light" : "yt-overlay");
          if (CONFIG.scanlines) document.getElementById("yt-cc-scan").style.display = "block";

          var THUMB =
            '<svg viewBox="0 0 24 24"><path d="M7 11v9M7 11l3.2-6.4a2 2 0 0 1 3.6 1.2V9h4.6a2 2 0 0 1 2 2.4l-1.2 6a2 2 0 0 1-2 1.6H7M7 11H4a1 1 0 0 0-1 1v7a1 1 0 0 0 1 1h3"/></svg>';

          /* build cards */
          CONFIG.comments.forEach(function (c, i) {
            var card = document.createElement("div");
            card.className = "yt-cc-card";
            card.id = "yt-cc-card-" + i;

            var av = document.createElement("div");
            av.className = "yt-cc-avatar";
            av.id = "yt-cc-av-" + i;
            if (c.avatar) {
              var img = document.createElement("img");
              img.src = c.avatar;
              av.appendChild(img);
            } else {
              av.textContent = c.initials || "?";
              av.style.background =
                "linear-gradient(135deg, hsl(" +
                (c.avatarHue || 210) +
                ", 62%, 52%), hsl(" +
                ((c.avatarHue || 210) + 40) +
                ", 62%, 42%))";
            }
            card.appendChild(av);

            var body = document.createElement("div");
            var meta = document.createElement("div");
            meta.className = "yt-cc-meta";
            meta.id = "yt-cc-meta-" + i;
            var user = document.createElement("span");
            user.className = "yt-cc-user";
            user.textContent = c.username;
            var time = document.createElement("span");
            time.className = "yt-cc-time";
            time.textContent = c.time || "";
            meta.appendChild(user);
            meta.appendChild(time);
            body.appendChild(meta);

            var text = document.createElement("div");
            text.className = "yt-cc-text";
            text.id = "yt-cc-text-" + i;
            Array.from(c.text).forEach(function (ch) {
              var span = document.createElement("span");
              span.className = "ch";
              span.textContent = ch;
              text.appendChild(span);
            });
            body.appendChild(text);

            var row = document.createElement("div");
            row.className = "yt-cc-row";
            row.id = "yt-cc-row-" + i;
            row.innerHTML =
              THUMB + "<span>" + (c.likes || 0) + '</span><span class="yt-cc-reply">REPLY</span>';
            body.appendChild(row);
            card.appendChild(body);
            col.appendChild(card);
          });

          /* position (measure after building) */
          col.style.left = CONFIG.x + "px";
          var rect = col.getBoundingClientRect();
          col.style.top =
            (CONFIG.y === null ? Math.round((1080 - rect.height) / 2) : CONFIG.y) + "px";

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

          /* comments enter sequentially: avatar pops, meta fades, text types, row fades */
          var t = CONFIG.animationIn ? 0.3 : 0;
          CONFIG.comments.forEach(function (c, i) {
            var av = "#yt-cc-av-" + i,
              meta = "#yt-cc-meta-" + i,
              row = "#yt-cc-row-" + i;
            var chars = document.querySelectorAll("#yt-cc-text-" + i + " .ch");
            var delay = Math.min(CONFIG.typeCharDelay, 2.2 / Math.max(1, chars.length));

            gsap.set(av, { opacity: 0, scale: 0.5 });
            gsap.set(meta, { opacity: 0, y: 10 });
            tl.to(av, { opacity: 1, scale: 1, duration: 0.45, ease: "back.out(1.6)" }, t);
            tl.to(meta, { opacity: 1, y: 0, duration: 0.4, ease: "power2.out" }, t + 0.12);
            t += 0.4;
            tl.to(chars, { opacity: 1, duration: 0.02, stagger: delay, ease: "none" }, t);
            t += chars.length * delay + 0.15;
            tl.to(row, { opacity: 1, duration: 0.35, ease: "power2.out" }, t);
            t += 0.5;
          });

          /* exit + hard kill (auto-scaled out) */
          if (CONFIG.animationOut) {
            tl.to(col, { opacity: 0, y: -18, duration: OUT, ease: "power2.in" }, DUR - OUT - 0.05);
          }
          tl.set(root, { visibility: "hidden" }, DUR - 0.02);

          window.__timelines["yt-comment-card"] = tl;
        })();
      </script>
    </body>
  </html>
  ```
</Accordion>

Tagged `social` `comments` `creator` `overlay`.

## Related topics

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