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hyperframes/docs/catalog/blocks/transitions-cover.mdx
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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the same unpublished .html path, so it would have shown an empty frame.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

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---
title: "Cover Transitions"
description: "Showcase of cover/uncover slide transitions"
---
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="transitions-cover 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/transitions-cover.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/transitions-cover.png");document.body.appendChild(p)});<\/script></body></html>`}
/>
## Install
<InstallCommand command="npx hyperframes add transitions-cover" />
That writes one file: `compositions/transitions-cover.html`.
## Source
<Accordion title={`transitions-cover.html`}>
```html
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Cover Transitions Showcase</title>
<script src="https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/gsap.min.js"></script>
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
background: #000;
overflow: hidden;
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}
/* Title Card */
#title-card {
position: absolute;
inset: 0;
z-index: 10;
background: linear-gradient(135deg, #0d1b2a 0%, #1b263b 100%);
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
opacity: 1;
}
#title-card h1 {
font-size: 72px;
font-weight: 800;
color: #fff;
letter-spacing: -1px;
opacity: 0;
transform: translateY(30px);
}
#title-card .subtitle {
font-size: 28px;
font-weight: 400;
color: rgba(255, 255, 255, 0.5);
margin-top: 12px;
opacity: 0;
transform: translateY(20px);
}
/* Scenes */
#scene1,
#scene2 {
position: absolute;
inset: 0;
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
}
#scene1 {
background: #1b263b;
z-index: 2;
opacity: 0;
}
#scene2 {
background: #e07a5f;
z-index: 1;
opacity: 0;
}
.scene-number {
font-size: 180px;
font-weight: 900;
line-height: 1;
opacity: 0.12;
letter-spacing: -6px;
}
#scene1 .scene-number {
color: #fff;
}
#scene2 .scene-number {
color: #000;
}
.scene-label {
font-size: 48px;
font-weight: 700;
margin-top: -20px;
}
#scene1 .scene-label {
color: #fff;
}
#scene2 .scene-label {
color: #fff;
}
/* Info bar */
.info-bar {
position: absolute;
bottom: 0;
left: 0;
right: 0;
height: 80px;
display: flex;
align-items: center;
justify-content: space-between;
padding: 0 48px;
}
#scene1 .info-bar {
background: rgba(0, 0, 0, 0.3);
}
#scene2 .info-bar {
background: rgba(0, 0, 0, 0.2);
}
.info-bar .label {
font-size: 18px;
font-weight: 600;
color: rgba(255, 255, 255, 0.7);
text-transform: uppercase;
letter-spacing: 2px;
}
.info-bar .desc {
font-size: 16px;
color: rgba(255, 255, 255, 0.5);
font-style: italic;
}
/* Outro */
#outro {
position: absolute;
inset: 0;
z-index: 10;
background: linear-gradient(135deg, #0d1b2a 0%, #1b263b 100%);
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
opacity: 0;
}
#outro h2 {
font-size: 56px;
font-weight: 800;
color: #fff;
opacity: 0;
transform: translateY(20px);
}
#outro .tag {
font-size: 22px;
color: rgba(255, 255, 255, 0.4);
margin-top: 10px;
opacity: 0;
transform: translateY(15px);
}
</style>
</head>
<body>
<div
id="comp"
data-composition-id="main"
data-start="0"
data-duration="21"
data-width="1920"
data-height="1080"
style="position: relative; width: 1920px; height: 1080px; overflow: hidden; background: #000"
>
<!-- Title Card -->
<div id="title-card">
<h1 id="title-h1">Cover Transitions</h1>
<div class="subtitle" id="title-sub">3 transition styles</div>
</div>
<!-- Scene A -->
<div id="scene1">
<div class="scene-number">ONE</div>
<div class="scene-label">SCENE A</div>
<div class="info-bar">
<span class="label" id="info-label-a"></span>
<span class="desc" id="info-desc-a"></span>
</div>
</div>
<!-- Scene B -->
<div id="scene2">
<div class="scene-number">TWO</div>
<div class="scene-label">SCENE B</div>
<div class="info-bar">
<span class="label" id="info-label-b"></span>
<span class="desc" id="info-desc-b"></span>
</div>
</div>
<!-- Staggered Blocks Wipes -->
<div
id="wipe-a"
style="
position: absolute;
inset: 0;
background: #f72585;
z-index: 50;
transform: translateX(-1920px);
"
></div>
<div
id="wipe-b"
style="
position: absolute;
inset: 0;
background: #7209b7;
z-index: 49;
transform: translateX(-1920px);
"
></div>
<!-- Horizontal Blinds Container -->
<div
id="blinds-container"
style="position: absolute; inset: 0; z-index: 50; pointer-events: none"
></div>
<!-- Vertical Blinds Container -->
<div
id="vblinds-container"
style="position: absolute; inset: 0; z-index: 50; pointer-events: none"
></div>
<!-- Outro -->
<div id="outro">
<h2 id="outro-h2">Cover Transitions</h2>
<div class="tag" id="outro-tag">End of showcase</div>
</div>
</div>
<script>
(function () {
// Generate horizontal blind strips
var blindsHTML = "";
for (var i = 0; i < 8; i++) {
blindsHTML +=
'<div id="blind-' +
i +
'" style="position:absolute; left:0; width:1920px; height:135px; top:' +
i * 135 +
"px; background:" +
[
"#3A0CA3",
"#4361EE",
"#4CC9F0",
"#F72585",
"#3A0CA3",
"#4361EE",
"#4CC9F0",
"#F72585",
][i] +
'; transform:translateX(-1920px);"></div>';
}
document.getElementById("blinds-container").innerHTML = blindsHTML;
// Generate vertical blind strips
var vblindsHTML = "";
for (var i = 0; i < 8; i++) {
vblindsHTML +=
'<div id="vblind-' +
i +
'" style="position:absolute; top:0; height:1080px; width:240px; left:' +
i * 240 +
"px; background:" +
[
"#3A0CA3",
"#4361EE",
"#4CC9F0",
"#F72585",
"#3A0CA3",
"#4361EE",
"#4CC9F0",
"#F72585",
][i] +
'; transform:translateY(-1080px);"></div>';
}
document.getElementById("vblinds-container").innerHTML = vblindsHTML;
var tl = gsap.timeline({ paused: false });
window.__timelines = window.__timelines || {};
window.__timelines["main"] = tl;
// Transition demos config
var demos = [
{ label: "STAGGERED BLOCKS", desc: "Use a staggered color blocks transition" },
{ label: "HORIZONTAL BLINDS", desc: "Use a horizontal blinds transition" },
{ label: "VERTICAL BLINDS", desc: "Use a vertical blinds transition" },
];
// Reset scenes helper
function resetScenes(t, demoIndex) {
tl.set("#scene1", { opacity: 1 }, t);
tl.set("#scene2", { opacity: 0 }, t);
tl.set("#info-label-a", { textContent: demos[demoIndex].label }, t);
tl.set("#info-desc-a", { textContent: demos[demoIndex].desc }, t);
tl.set("#info-label-b", { textContent: demos[demoIndex].label }, t);
tl.set("#info-desc-b", { textContent: demos[demoIndex].desc }, t);
// Reset wipes
tl.set("#wipe-a", { x: -1920 }, t);
tl.set("#wipe-b", { x: -1920 }, t);
// Reset horizontal blinds
for (var i = 0; i < 8; i++) {
tl.set("#blind-" + i, { x: -1920 }, t);
}
// Reset vertical blinds
for (var i = 0; i < 8; i++) {
tl.set("#vblind-" + i, { y: -1080 }, t);
}
}
// ===== TITLE CARD (0s - 3s) =====
tl.to("#title-h1", { opacity: 1, y: 0, duration: 0.6, ease: "power2.out" }, 0.3);
tl.to("#title-sub", { opacity: 1, y: 0, duration: 0.5, ease: "power2.out" }, 0.6);
tl.to("#title-card", { opacity: 0, duration: 0.4, ease: "power1.inOut" }, 2.5);
// ===== DEMO 1: STAGGERED BLOCKS (3s - 8s) =====
var T1 = 3;
resetScenes(T1, 0);
// Show Scene A for a beat, then transition at midpoint
var T = T1 + 2;
tl.set("#wipe-a", { x: -1920 }, T - 0.01);
tl.set("#wipe-b", { x: -1920 }, T - 0.01);
tl.to("#wipe-a", { x: 0, duration: 0.25, ease: "power3.inOut" }, T);
tl.to("#wipe-b", { x: 0, duration: 0.25, ease: "power3.inOut" }, T + 0.06);
tl.set("#scene1", { opacity: 0 }, T + 0.2);
tl.set("#scene2", { opacity: 1 }, T + 0.2);
tl.to("#wipe-a", { x: 1920, duration: 0.25, ease: "power3.inOut" }, T + 0.28);
tl.to("#wipe-b", { x: 1920, duration: 0.25, ease: "power3.inOut" }, T + 0.34);
// ===== DEMO 2: HORIZONTAL BLINDS (8s - 13s) =====
var T2 = 8;
resetScenes(T2, 1);
T = T2 + 2;
var stagger = 0.03;
for (var i = 0; i < 8; i++) {
tl.fromTo(
"#blind-" + i,
{ x: -1920 },
{ x: 0, duration: 0.2, ease: "power3.inOut" },
T + i * stagger,
);
}
tl.set("#scene1", { opacity: 0 }, T + 0.5);
tl.set("#scene2", { opacity: 1 }, T + 0.5);
for (var i = 0; i < 8; i++) {
tl.to(
"#blind-" + i,
{ x: 1920, duration: 0.2, ease: "power3.inOut" },
T + 0.55 + i * stagger,
);
}
// ===== DEMO 3: VERTICAL BLINDS (13s - 18s) =====
var T3 = 13;
resetScenes(T3, 2);
T = T3 + 2;
for (var i = 0; i < 8; i++) {
tl.fromTo(
"#vblind-" + i,
{ y: -1080 },
{ y: 0, duration: 0.2, ease: "power3.inOut" },
T + i * 0.03,
);
}
tl.set("#scene1", { opacity: 0 }, T + 0.5);
tl.set("#scene2", { opacity: 1 }, T + 0.5);
for (var i = 0; i < 8; i++) {
tl.to(
"#vblind-" + i,
{ y: 1080, duration: 0.2, ease: "power3.inOut" },
T + 0.55 + i * 0.03,
);
}
// ===== OUTRO (18s - 21s) =====
tl.to("#scene1", { opacity: 0, duration: 0.3 }, 18);
tl.to("#scene2", { opacity: 0, duration: 0.3 }, 18);
tl.to("#outro", { opacity: 1, duration: 0.4, ease: "power1.inOut" }, 18.2);
tl.to("#outro-h2", { opacity: 1, y: 0, duration: 0.5, ease: "power2.out" }, 18.5);
tl.to("#outro-tag", { opacity: 1, y: 0, duration: 0.4, ease: "power2.out" }, 18.8);
})();
</script>
</body>
</html>
```
</Accordion>
## Usage
After installing, add the block to your host composition:
```html
<div data-composition-id="transitions-cover" data-composition-src="compositions/transitions-cover.html" data-start="0" data-duration="21" data-track-index="1" data-width="1920" data-height="1080"></div>
```
{/* hf:generated-footer */}
Tagged `transition` `showcase`.
## Related topics
- [Browse the complete Catalog](/catalog)
- [Add assets and Catalog items in Studio](/studio/assets-and-blocks)
- [Build a richer composition](/go-further)
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