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That writes one file:compositions/components/yt-feather-highlight.html.
Paste it into your composition
Opencompositions/components/yt-feather-highlight.html and copy what is inside into your own composition.
A component has no size or duration of its own. It takes both from the composition
you paste it into.
Source
yt-feather-highlight.html
yt-feather-highlight.html
<!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-feather-highlight --------------------------------------------
Spotlight part of the frame: a dim layer with a feathered ellipse
hole. The hole's position/size are CSS variables, so the helpers
tween them directly (GSAP animates CSS vars). */
.yt-hl {
--yt-hl-x: 50%;
--yt-hl-y: 50%;
--yt-hl-rx: 22%;
--yt-hl-ry: 26%;
--yt-hl-dim: 0.55;
position: absolute;
inset: 0;
pointer-events: none;
opacity: 0;
background: rgba(6, 8, 12, var(--yt-hl-dim));
-webkit-mask-image: radial-gradient(
ellipse var(--yt-hl-rx) var(--yt-hl-ry) at var(--yt-hl-x) var(--yt-hl-y),
transparent 0%,
transparent 52%,
black 88%
);
mask-image: radial-gradient(
ellipse var(--yt-hl-rx) var(--yt-hl-ry) at var(--yt-hl-x) var(--yt-hl-y),
transparent 0%,
transparent 52%,
black 88%
);
}
/* self-preview stand-in scene (not part of the snippet) */
#yt-hl-scene {
position: absolute;
inset: 0;
background: linear-gradient(135deg, #2a7fff 0%, #7d5cff 100%);
display: flex;
align-items: center;
justify-content: space-around;
font-family: "Inter", ui-sans-serif, sans-serif;
font-weight: 700;
font-size: 64px;
color: rgba(255, 255, 255, 0.92);
}
#yt-hl-scene .box {
width: 420px;
height: 300px;
border-radius: 24px;
background: rgba(255, 255, 255, 0.16);
display: flex;
align-items: center;
justify-content: center;
}
</style>
</head>
<body>
<!-- Self-preview wrapper. WIRING: copy the .yt-hl CSS and drop
<div class="yt-hl" id="yt-my-hl"></div> ABOVE the content to spotlight
(same region). Then:
ytHighlightIn(tl, "#yt-my-hl", 3.0, { x: "28%", y: "50%", rx: "20%", ry: "30%" });
ytHighlightTo(tl, "#yt-my-hl", 5.0, { x: "72%" }, 0.8); // glide to the next target
ytHighlightOut(tl, "#yt-my-hl", 8.0);
-->
<div
id="yt-hl-root"
data-composition-id="yt-feather-highlight"
data-start="0"
data-duration="5"
data-width="1920"
data-height="1080"
>
<div id="yt-hl-scene">
<div class="box">A</div>
<div class="box">B</div>
</div>
<div class="yt-hl" id="yt-hl-demo"></div>
<div
id="yt-hl-drv"
class="clip"
data-start="0"
data-duration="5"
data-track-index="0"
style="position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none"
></div>
</div>
<script>
(function () {
window.__timelines = window.__timelines || {};
// ---- copy these helpers into the host script ----
window.ytHighlightIn = function (tl, target, at, opts) {
opts = opts || {};
var vars = { opacity: 1, duration: 0.5, ease: "power2.out" };
if (opts.x !== undefined) vars["--yt-hl-x"] = opts.x;
if (opts.y !== undefined) vars["--yt-hl-y"] = opts.y;
if (opts.rx !== undefined) vars["--yt-hl-rx"] = opts.rx;
if (opts.ry !== undefined) vars["--yt-hl-ry"] = opts.ry;
gsap.set(target, {
"--yt-hl-x": opts.x !== undefined ? opts.x : "50%",
"--yt-hl-y": opts.y !== undefined ? opts.y : "50%",
"--yt-hl-rx": opts.rx !== undefined ? opts.rx : "22%",
"--yt-hl-ry": opts.ry !== undefined ? opts.ry : "26%",
});
tl.to(target, { opacity: 1, duration: 0.5, ease: "power2.out" }, at);
};
window.ytHighlightTo = function (tl, target, at, opts, dur) {
opts = opts || {};
var vars = { duration: dur === undefined ? 0.8 : dur, ease: "power2.inOut" };
if (opts.x !== undefined) vars["--yt-hl-x"] = opts.x;
if (opts.y !== undefined) vars["--yt-hl-y"] = opts.y;
if (opts.rx !== undefined) vars["--yt-hl-rx"] = opts.rx;
if (opts.ry !== undefined) vars["--yt-hl-ry"] = opts.ry;
tl.to(target, vars, at);
};
window.ytHighlightOut = function (tl, target, at) {
tl.to(target, { opacity: 0, duration: 0.4, ease: "power2.in" }, at);
};
// Self-preview timeline: spotlight box A, glide to box B, release.
var tl = gsap.timeline({ paused: true });
window.ytHighlightIn(tl, "#yt-hl-demo", 0.5, { x: "26%", y: "50%", rx: "17%", ry: "24%" });
window.ytHighlightTo(tl, "#yt-hl-demo", 2.2, { x: "74%" }, 0.9);
window.ytHighlightOut(tl, "#yt-hl-demo", 4.2);
tl.set("#yt-hl-root", { visibility: "hidden" }, 4.98);
window.__timelines["yt-feather-highlight"] = tl;
})();
</script>
</body>
</html>
highlight spotlight effect overlay.