Files
hyperframes/docs/catalog/blocks/yt-lower-third.mdx
T
Miguel Ángel 9734578e60 feat(registry): bring back the video-primitive moves (#3169)
Restores the 208 catalog items reverted after their previews 404'd in
production, this time on the payload mechanism rather than the .html files
that caused the outage.

The generator no longer writes a preview document to docs/public. That writer,
and the machinery under it, existed only to produce files the docs host
discards, so it is gone rather than bypassed. Items now embed the composition
itself via a payload, which is what the previous change already does for the
items that were already in the catalog.

The variables explorer is parked, not restored: it drove its preview through
the same unpublished .html path, so it would have shown an empty frame. Items
that declare variables get the live player plus the static variables table, and
reconnecting the explorer to payloads is a follow-up.
2026-08-10 18:46:03 -04:00

289 lines
7.6 KiB
Plaintext

---
title: "YouTube Lower Third"
description: "Animated YouTube subscribe lower third with avatar and channel info"
---
import { InstallCommand } from "/snippets/install-command.jsx";
<iframe
className="w-full aspect-video rounded-xl border-0 bg-zinc-100 dark:bg-zinc-800"
title="yt-lower-third 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-lower-third.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-lower-third.png");document.body.appendChild(p)});<\/script></body></html>`}
/>
## Install
<InstallCommand command="npx hyperframes add yt-lower-third" />
That writes `compositions/yt-lower-third.html`, plus 1 supporting file under `assets/`.
## Source
<Accordion title={`yt-lower-third.html`}>
```html
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<link rel="preconnect" href="https://fonts.googleapis.com" />
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
<link
href="https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;700&display=block"
rel="stylesheet"
/>
<script src="https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/gsap.min.js"></script>
<style>
* {
margin: 0;
padding: 0;
}
html,
body {
background: transparent;
overflow: hidden;
}
body {
width: 1920px;
height: 1080px;
font-family: "DM Sans", sans-serif;
}
[data-composition-id="yt-lower-third"] .lower-third {
position: absolute;
bottom: 80px;
left: 50%;
transform: translateX(-50%);
display: flex;
align-items: center;
gap: 28px;
background: #ffffff;
border-radius: 60px;
padding: 20px 32px 20px 20px;
box-shadow: 0 6px 32px rgba(0, 0, 0, 0.14);
}
[data-composition-id="yt-lower-third"] .avatar {
width: 96px;
height: 96px;
border-radius: 50%;
object-fit: cover;
flex-shrink: 0;
}
[data-composition-id="yt-lower-third"] .channel-info {
display: flex;
flex-direction: column;
gap: 2px;
margin-right: 20px;
}
[data-composition-id="yt-lower-third"] .channel-name {
font-size: 34px;
font-weight: 700;
color: #0f0f0f;
line-height: 1.3;
letter-spacing: -0.01em;
}
[data-composition-id="yt-lower-third"] .subscriber-count {
font-size: 22px;
font-weight: 400;
color: #606060;
line-height: 1.3;
}
[data-composition-id="yt-lower-third"] .subscribe-btn {
position: relative;
width: 220px;
height: 68px;
border-radius: 34px;
background: #0f0f0f;
flex-shrink: 0;
display: flex;
align-items: center;
justify-content: center;
overflow: hidden;
}
[data-composition-id="yt-lower-third"] .btn-text {
position: absolute;
font-family: "DM Sans", sans-serif;
font-size: 24px;
font-weight: 700;
color: #ffffff;
letter-spacing: 0.02em;
white-space: nowrap;
}
[data-composition-id="yt-lower-third"] .btn-text-subscribe {
opacity: 1;
}
[data-composition-id="yt-lower-third"] .btn-text-subscribed {
opacity: 0;
display: flex;
align-items: center;
gap: 8px;
}
[data-composition-id="yt-lower-third"] .check-icon {
display: inline-block;
width: 24px;
height: 24px;
}
[data-composition-id="yt-lower-third"] .check-icon svg {
width: 24px;
height: 24px;
display: block;
}
</style>
</head>
<body>
<div
id="root"
data-composition-id="yt-lower-third"
data-width="1920"
data-height="1080"
data-start="0"
data-duration="4.5"
>
<div
id="card"
class="clip lower-third"
data-start="0"
data-duration="4.5"
data-track-index="0"
>
<img class="avatar" src="assets/avatar.jpg" alt="HeyGen" crossorigin="anonymous" />
<div class="channel-info">
<div class="channel-name">HeyGen</div>
<div class="subscriber-count">82.2K subscribers</div>
</div>
<div id="subscribe-btn" class="subscribe-btn">
<span id="btn-subscribe" class="btn-text btn-text-subscribe">Subscribe</span>
<span id="btn-subscribed" class="btn-text btn-text-subscribed">
<span class="check-icon"
><svg
viewBox="0 0 24 24"
fill="none"
stroke="#fff"
stroke-width="2.5"
stroke-linecap="round"
stroke-linejoin="round"
>
<polyline points="20 6 9 17 4 12"></polyline></svg
></span>
Subscribed
</span>
</div>
</div>
</div>
<script>
window.__timelines = window.__timelines || {};
var tl = gsap.timeline({ paused: true });
var card = document.getElementById("card");
var btn = document.getElementById("subscribe-btn");
var textSub = document.getElementById("btn-subscribe");
var textSubd = document.getElementById("btn-subscribed");
// Slide in from bottom
gsap.set(card, { y: 300, opacity: 0 });
tl.to(
card,
{
y: 0,
opacity: 1,
duration: 0.5,
ease: "power3.out",
},
0.1,
);
// Hold, then button press-in
tl.to(
btn,
{
scale: 0.92,
duration: 0.15,
ease: "power2.out",
},
1.0,
);
// Button release with spring bounce + text swap
tl.to(
btn,
{
scale: 1,
duration: 0.4,
ease: "elastic.out(1, 0.4)",
},
1.15,
);
// Fade out "Subscribe", fade in "Subscribed"
tl.to(
textSub,
{
opacity: 0,
duration: 0.08,
ease: "none",
},
1.15,
);
tl.to(
textSubd,
{
opacity: 1,
duration: 0.08,
ease: "none",
},
1.18,
);
// Slide out to bottom (inverse of entrance)
tl.to(
card,
{
y: 300,
opacity: 0,
duration: 0.25,
ease: "power3.in",
},
3.8,
);
window.__timelines["yt-lower-third"] = tl;
</script>
</body>
</html>
```
</Accordion>
## Usage
After installing, add the block to your host composition:
```html
<div data-composition-id="yt-lower-third" data-composition-src="compositions/yt-lower-third.html" data-start="0" data-duration="4.5" data-track-index="1" data-width="1920" data-height="1080"></div>
```
{/* hf:generated-footer */}
Tagged `social` `overlay` `youtube`.
## Related topics
- [Browse the complete Catalog](/catalog)
- [Add assets and Catalog items in Studio](/studio/assets-and-blocks)
- [Build a richer composition](/go-further)