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9 YouTube Embed Code UI Patterns (Copy-Paste)

· Godrich · 9 items · 30 min read

EmbedsVanilla JSLoadingMedia & press

Nine embed UIs: a frame's height recomputes from its width, a lite facade times itself into a full frame after a delay, and a social badge count ticks up

YouTube responsive embed — a video frame that recomputes its ratio from the available width01 embed-youtube-responsive YouTube lite facade — an embed that switches to a full frame once elapsed time crosses a set point02 embed-youtube-lite-facade YouTube privacy-enhanced embed — a badge that recomputes its brightness on a cycle to pulse03 embed-youtube-nocookie Vertical shorts embed — a frame that recomputes background blur from the leftover width04 embed-shorts-vertical TikTok embed mock — a card that recomputes its like count from elapsed time05 embed-tiktok Instagram post embed card — a loading gradient whose angle keeps being recomputed06 embed-instagram X post embed frame — a card whose border brightness is recomputed on a cycle to glow07 embed-x-post Click-to-load embed — a placeholder that recomputes the size delta to grow smoothly08 embed-lazy-click-to-load Consent-gated embed placeholder — a card that folds by a height computed from its notice text09 embed-consent-placeholder

Auto-plays · click a tile to jump to its section · all nine in one zip

None of these nine screens makes a real network call — every video and profile image is a fixed-seed canvas thumbnail behind a placeholder channel name, and items 01 through 07 run purely on requestAnimationFrame cycling on a fixed period with zero click, drag, or pointer listeners attached. Only two carry a real listener: item 08 responds to a click or an Enter/Space keypress, and item 09 responds to a click, and in both cases the listener only flips the state early — the same fixed-cycle computation plays out from that moment onward, and an elapsed-time fallback flips it on its own when nobody clicks. Where a name below sounds like a specific platform, it's a descriptive stand-in for a familiar embed convention, not a claim about that platform's actual widget.

Anatomy of an embed UI — what nine screens compute

None of these nine screens leaves a size, a state, or a color sitting on the page unexamined. The same handful of arithmetic moves — a ratio, an elapsed-time threshold, a brightness value — keeps resurfacing under a different name, and once that's visible, all nine read as one idea wearing nine costumes.

Why a frame's height comes from its current width instead of a fixed number

Item 01 recomputes the video frame's height from whatever width it currently holds via aspect-ratio, and item 04 spends that same width-driven math on the leftover space beside a vertical frame instead of the frame itself — one multiplies a ratio, the other subtracts a width, but neither hard-codes a height.

Why three screens time their own state change instead of waiting on a network event

Item 02 flips from a lightweight thumbnail to a full frame the instant elapsed time crosses a threshold with nobody watching a real network request, and items 08 and 09 run the same kind of elapsed-time interpolation into a height once their state flips — a real click or keypress flips it early, and a fallback timer flips it on its own if nobody clicks, so the difference is only who starts the clock.

Why a badge, a border, and a like count all reuse the same cyclic recompute

Items 03 and 07 recompute a brightness value on a short sine cycle and feed it straight into an opacity and a scale or a custom property, while item 05 uses the same elapsed-time input to step a counter upward at a fixed interval instead of oscillating it — one clock, three different readouts, the same trick a hand-rolled social media embed code snippet reaches for whenever a badge needs to feel alive without polling anything.

Code per screen

Every block below is pasted straight out of that item's own index.html, not retyped from memory, and the zip's matching prompt fragment reconstructs the same file when handed to an AI coding tool.

01YouTube responsive embed — a video frame that recomputes its ratio from the available width

Whenever the card's width changes, the frame's height is recomputed from that width, so the video frame's aspect ratio stays exactly the same no matter how the screen size shifts. It suits video-tutorial slots inside blog posts and intro-video sections on responsive landing pages.

YouTube responsive embed — a video frame that recomputes its ratio from the available width
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01 · YouTube responsive embed — a video frame that recomputes its ratio from the available width — Measured area 26.864% · moving frames 23/23Original by GODRICH · SCSS and React ship in the zip · See the password

aspect-ratiogetBoundingClientRectrequestAnimationFrame

What the numbers say

Cumulative area is 26.864% (max frame 9.654%, mean intensity 84.4) across all 23 of 23 frame deltas — the frame's width already spans most of the card, so a sine-driven resize registers as real pixel movement on almost every tick rather than needing extra travel to show up.

  function apply(t) {
    var w = BASE + RANGE * Math.sin(2 * Math.PI * t / CYCLE_MS);
    frameEl.style.width = w.toFixed(1) + 'px';
    var rect = frameEl.getBoundingClientRect();
    readoutEl.textContent = '16:9 · ' + Math.round(w) + ' × ' + Math.round(rect.height) + 'px';
  }

  apply(0);

  if (reduce) return;

  var start = null;
  function loop(ts) {
    if (start === null) start = ts;
    var t = (ts - start) % CYCLE_MS;
    apply(t);
    requestAnimationFrame(loop);
  }
  requestAnimationFrame(loop);

02YouTube lite facade — an embed that switches to a full frame once elapsed time crosses a set point

The time elapsed since the card appeared is continuously recomputed, and the instant it crosses a set threshold, the lightweight thumbnail-only card switches itself into the look of a real playback frame. That switch lands at FACADE_DELAY (1200ms) into each two-second loop.

YouTube lite facade — an embed that switches to a full frame once elapsed time crosses a set point
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02 · YouTube lite facade — an embed that switches to a full frame once elapsed time crosses a set point — Measured area 7.068% · moving frames 23/23Original by GODRICH · SCSS and React ship in the zip · See the password

datasetaria-livematchMedia

What the numbers say

Cumulative area is 7.068% (max frame 6.903%, mean intensity 100.6) over 23 of 23 frame deltas — a comparatively high average intensity next to a small cumulative area matches one abrupt frame swap rather than a spread-out animation.

  function apply(t) {
    var isFrame = t >= FACADE_DELAY;
    cardEl.dataset.state = isFrame ? 'frame' : 'lite';
    var progress = isFrame ? (t - FACADE_DELAY) / (CYCLE_MS - FACADE_DELAY) : 0;
    progressFillEl.style.transform = 'scaleX(' + progress.toFixed(4) + ')';
    var sec = Math.floor(progress * TOTAL_SEC);
    timeLabelEl.textContent = '0:' + String(sec).padStart(2, '0') + ' / 0:12';
    readoutEl.textContent = 'Elapsed ' + (t / 1000).toFixed(2) + 's · switch ' + transitionSec + 's';
  }

  apply(0);
  if (reduce) return;

  var start = null;
  function loop(ts) {
    if (start === null) start = ts;
    var t = (ts - start) % CYCLE_MS;
    apply(t);
    requestAnimationFrame(loop);
  }
  requestAnimationFrame(loop);

03YouTube privacy-enhanced embed — a badge that recomputes its brightness on a cycle to pulse

The lock badge in the frame's corner has its brightness value recomputed on a steady cycle, and as that value rises and falls the badge pulses gently to signal a tracking-cookie-free embed. The pulse itself runs on its own 700ms period nested inside the wider 2000ms loop.

YouTube privacy-enhanced embed — a badge that recomputes its brightness on a cycle to pulse
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03 · YouTube privacy-enhanced embed — a badge that recomputes its brightness on a cycle to pulse — Measured area 1.876% · moving frames 23/23Original by GODRICH · SCSS and React ship in the zip · See the password

aria-liverequestAnimationFramematchMedia

What the numbers say

Cumulative area is 1.876% (max frame 1.603%, mean intensity 59.5) over 23 of 23 frame deltas — the lowest cumulative area of the nine alongside item 07, which tracks: a badge pulse only ever moves a small glow and a few percent of scale, so its on-screen footprint stays genuinely small even while the underlying value swings through a full cycle.

  function apply(t) {
    var pulse = 0.5 + 0.5 * Math.sin(2 * Math.PI * t / 700);
    badgeGlowEl.style.opacity = (0.1 + 0.45 * pulse).toFixed(3);
    badgeEl.style.transform = 'scale(' + (1 + 0.04 * pulse).toFixed(4) + ')';
    readoutEl.textContent = 'Brightness ' + Math.round(pulse * 100) + '%';
  }

  apply(0);
  if (reduce) return;

  var start = null;
  function loop(ts) {
    if (start === null) start = ts;
    var t = (ts - start) % CYCLE_MS;
    apply(t);
    requestAnimationFrame(loop);
  }
  requestAnimationFrame(loop);

04Vertical shorts embed — a frame that recomputes background blur from the leftover width

The leftover space is computed by subtracting the vertical frame's width from the screen width, and the wider that leftover gets, the stronger the side-background blur is recomputed to be. This suits mobile clip-listing pages and intro sections for shorts-style landing pages.

Vertical shorts embed — a frame that recomputes background blur from the leftover width
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04 · Vertical shorts embed — a frame that recomputes background blur from the leftover width — Measured area 25.935% · moving frames 23/23Original by GODRICH · SCSS and React ship in the zip · See the password

backdrop-filteraspect-ratiowill-change

What the numbers say

Cumulative area is 25.935% (max frame 13.017%, mean intensity 82.9) over 23 of 23 frame deltas — close to item 01's footprint, since the frame's own width rides the same kind of sine wave underneath the leftover-to-blur layer stacked on top of it.

  function apply(t) {
    var frameWrapStyle = getComputedStyle(frameWrapEl);
    var BASE_FW = parseFloat(frameWrapStyle.getPropertyValue('--base-fw')) || 118;
    var AMP_FW = parseFloat(frameWrapStyle.getPropertyValue('--amp-fw')) || 16;
    var fw = BASE_FW + AMP_FW * Math.sin(2 * Math.PI * t / CYCLE_MS);
    frameEl.style.width = fw.toFixed(1) + 'px';
    // computed layer: leftover stage width -> background blur strength. The bigger the frame grows, the less blurred the background behind it gets.
    var leftover = stageEl.clientWidth - frameEl.getBoundingClientRect().width;
    var blur = BG_BLUR_PX + leftover / 14;
    bgEl.style.filter = 'blur(' + blur.toFixed(1) + 'px)';
    readoutEl.textContent = 'Margin ' + Math.round(leftover) + 'px · blur ' + blur.toFixed(1) + 'px';
  }

05TikTok embed mock — a card that recomputes its like count from elapsed time

The time since the card appeared is measured at fixed intervals, and at each interval the like count is recomputed by adding a small increment, giving the vertical video mock a sense of life. It fits influencer profile pages and curated content listings.

TikTok embed mock — a card that recomputes its like count from elapsed time
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05 · TikTok embed mock — a card that recomputes its like count from elapsed time — Measured area 13.598% · moving frames 23/23Original by GODRICH · SCSS and React ship in the zip · See the password

writing-modeobject-fitwhite-space

What the numbers say

Cumulative area is 13.598% (max frame 13.557%, mean intensity 42.6) over 23 of 23 frame deltas — the max-frame figure sits almost equal to the cumulative total, meaning nearly all of this item's visible motion is concentrated in the single frame where the heart-burst overlay peaks.

  var CYCLE_MS = 2000;
  var LIKE_INTERVAL = 400;
  var LIKE_STEP = 3;
  var LIKE_BASE = 1247;

  function apply(t) {
    // computed layer: recompute the like count every interval -- a stepped counter, not a tween
    var likes = LIKE_BASE + Math.floor(t / LIKE_INTERVAL) * LIKE_STEP;
    var since = t % LIKE_INTERVAL;
    var pop = since < 180 ? 1 + 0.28 * (1 - since / 180) : 1;
    heartWrapEl.style.transform = 'scale(' + pop.toFixed(3) + ')';
    likeCountEl.textContent = likes.toLocaleString('en-US');
    readoutEl.textContent = 'Interval ' + (LIKE_INTERVAL / 1000).toFixed(1) + 's · likes ' + likes.toLocaleString('en-US');

    // double-tap heart -- grows from 0 to 1 and fades within the same interval (a big overlay on the thumbnail)
    var prog = since / LIKE_INTERVAL;
    var burstScale = 0.3 + prog * 2.3;
    var burstOpacity = Math.max(0, 0.85 * (1 - prog * 1.15));
    burstEl.style.transform = 'translate(-50%, -50%) scale(' + burstScale.toFixed(3) + ')';
    burstEl.style.opacity = burstOpacity.toFixed(3);

    // the instant the like count rises, the whole thumbnail briefly brightens (a flash) -- sharing the same `since` as the heart layer
    var flashOpacity = since < 160 ? 0.4 * (1 - since / 160) : 0;
    flashEl.style.opacity = flashOpacity.toFixed(3);
  }

06Instagram post embed card — a loading gradient whose angle keeps being recomputed

The gradient angle inside the image slot is continuously recomputed over time, producing a smooth flowing motion that reads like the image hasn't finished loading yet. It works well in brand gallery sections and testimonial-collection pages.

Instagram post embed card — a loading gradient whose angle keeps being recomputed
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06 · Instagram post embed card — a loading gradient whose angle keeps being recomputed — Measured area 18.658% · moving frames 23/23Original by GODRICH · SCSS and React ship in the zip · See the password

linear-gradientsetPropertyborder-radius

What the numbers say

Cumulative area is 18.658% (max frame 15.059%, mean intensity 25.4) over 23 of 23 frame deltas — the lowest mean intensity of the nine, because a rotating gradient changes color gradually across a broad slot rather than snapping between sharply different values frame to frame.

  function apply(t) {
    // computed layer: elapsed-time ratio -> gradient rotation angle (0-360deg)
    var angle = Math.floor((t / CYCLE_MS) * 360);
    slotEl.style.setProperty('--spin', angle + 'deg');

    var prog = t / CYCLE_MS;
    var sweep = -30 + prog * 160;
    shimmerEl.style.transform = 'translateX(' + sweep.toFixed(1) + '%)';

    readoutEl.textContent = 'Angle ' + angle + '°';
  }

  if (reduce) {
    apply(0);
    return;
  }

  var start = null;
  function loop(ts) {
    if (start === null) start = ts;
    var t = (ts - start) % CYCLE_MS;
    apply(t);
    requestAnimationFrame(loop);
  }
  requestAnimationFrame(loop);

07X post embed frame — a card whose border brightness is recomputed on a cycle to glow

The card border's brightness value is recomputed on a steady cycle, and as that value rises and falls the border glows faintly and settles, framing the quoted post like a real embed widget. It suits press and social-reaction quote roundups, or quote cards used in place of screenshots.

X post embed frame — a card whose border brightness is recomputed on a cycle to glow
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07 · X post embed frame — a card whose border brightness is recomputed on a cycle to glow — Measured area 1.878% · moving frames 23/23Original by GODRICH · SCSS and React ship in the zip · See the password

requestAnimationFramesetPropertyaria-live

What the numbers say

Cumulative area is 1.878% (max frame 1.619%, mean intensity 59.4) over 23 of 23 frame deltas — tied with item 03 for the lowest cumulative area of the nine, which is expected rather than a defect: a border-brightness change only ever repaints a thin outline, so its pixel footprint stays small by construction.

  drawSeedThumb(avatarEl, 107);

  // computed layer: recompute border brightness as a sine wave every frame, feed it into --glow, and pulse it via opacity
  function apply(t) {
    var glow = 0.5 + 0.5 * Math.sin(2 * Math.PI * t / GLOW_MS);
    cardEl.style.setProperty('--glow', glow.toFixed(3));
    glowValueEl.textContent = Math.round(glow * 100) + '%';
  }

  if (reduce) {
    apply(0);
    return;
  }

  var start = null;
  function loop(ts) {
    if (start === null) start = ts;
    var t = (ts - start) % CYCLE_MS;
    apply(t);
    requestAnimationFrame(loop);
  }
  requestAnimationFrame(loop);

08Click-to-load embed — a placeholder that recomputes the size delta to grow smoothly

The moment the placeholder is switched to its pressed state, the size difference between the placeholder and the real frame is computed, and the card expands smoothly by that difference into the heavier content slot. It fits long listing pages packed with multiple videos and detail pages that need to save initial load.

Click-to-load embed — a placeholder that recomputes the size delta to grow smoothly
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08 · Click-to-load embed — a placeholder that recomputes the size delta to grow smoothly — Measured area 31.389% · moving frames 22/23Original by GODRICH · SCSS and React ship in the zip · See the password

requestAnimationFrameoffsetHeightaria-pressed

What the numbers say

Cumulative area is 31.389% (max frame 30.644%, mean intensity 70.0), moving in 22 of 23 frame deltas — one still frame short of the seven autoplay items: the expand itself fires on the same kind of elapsed-time fallback the autoplay screens use (PRESS_AT at 900ms when no click has landed), and the single still delta falls where the cycle has already wrapped back to idle, the hint arrow's slow sine dipping under the pixel threshold for one frame rather than the screen freezing.

  // computed layer: interpolate from the placeholder's measured height (phH) to FRAME_H with easeOutCubic
  // to compute the card's height. Past the halfway point the real frame fades in,
  // and once the expand finishes, the progress bar fills for the remaining time.
  function apply(t) {
    var h;
    var hintOpacity = 0.86 + 0.14 * Math.sin(2 * Math.PI * t / HINT_MS);
    if (!pressed) {
      h = placeholderEl.offsetHeight;
      cardEl.style.height = h + 'px';
      hintArrowEl.style.opacity = hintOpacity.toFixed(3);
    } else {
      var elapsed = t - pressTime;
      if (elapsed < 0) elapsed += CYCLE_MS;
      var delta = FRAME_H - phH;
      var p = easeOutCubic(Math.min(1, elapsed / EXPAND_MS));
      h = phH + delta * p;
      cardEl.style.height = h.toFixed(1) + 'px';
      var frameOpacity = p <= 0.55 ? 0 : Math.min(1, (p - 0.55) / 0.45);
      frameEl.style.opacity = frameOpacity.toFixed(3);
      var sweepSpan = CYCLE_MS - PRESS_AT - EXPAND_MS;
      var sweepP = Math.max(0, Math.min(1, (elapsed - EXPAND_MS) / sweepSpan));
      progressBarEl.style.transform = 'scaleX(' + sweepP.toFixed(3) + ')';
    }
    heightValueEl.textContent = 'height ' + Math.round(h) + 'px';
  }

09Consent-gated embed placeholder — a card that folds by a height computed from its notice text

The instant consent is marked, the height of the notice block is computed, and the block folds up by that exact height while the frame beneath unfolds by the same amount to reveal itself. It suits embed zones on GDPR-facing landing pages and video/social sections that require cookie-notice consent.

Consent-gated embed placeholder — a card that folds by a height computed from its notice text
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09 · Consent-gated embed placeholder — a card that folds by a height computed from its notice text — Measured area 37.148% · moving frames 19/23Original by GODRICH · SCSS and React ship in the zip · See the password

requestAnimationFrameoffsetHeightaria-expanded

What the numbers say

Cumulative area is 37.148% (max frame 37.081%, mean intensity 128.4) — both the widest and the most intense of the nine — moving in only 19 of 23 frame deltas, the fewest of all nine: the consent state flips on the same elapsed-time fallback (CONSENT_AT at 700ms with no click), and between the fold-and-unfold bursts the only motion left is the status dot's slow sine, whose 0.14-amplitude steps sit under the pixel threshold for four of the 23 deltas, so the quiet stretches are structural rather than a rendering gap.

  // computed layer: at the moment of consent, feed the notice block's measured height (noticeH)
  // straight into the frame's height increase by the fold progress (p) -- the frame grows by exactly as much as the notice folds.
  function apply(t) {
    var dotOpacity = 0.86 + 0.14 * Math.sin(2 * Math.PI * t / DOT_MS);
    if (!consented) {
      statusDotEl.style.opacity = dotOpacity.toFixed(3);
      return;
    }
    var elapsed = t - consentTime;
    if (elapsed < 0) elapsed += CYCLE_MS;
    var p = easeOutCubic(Math.min(1, elapsed / CONSENT_FOLD_MS));
    noticeEl.style.height = (noticeH * (1 - p)).toFixed(1) + 'px';
    frameEl.style.height = (FRAME_BASE_H + noticeH * p).toFixed(1) + 'px';
    var sweepSpan = CYCLE_MS - CONSENT_AT - CONSENT_FOLD_MS;
    var sweepP = Math.max(0, Math.min(1, (elapsed - CONSENT_FOLD_MS) / sweepSpan));
    progressBarEl.style.transform = 'scaleX(' + sweepP.toFixed(3) + ')';
  }

Where this actually gets used — a blog post and a product page

Dropping a single video into the middle of a blog post usually means reaching for item 01's responsive frame, since the column width changes with the reader's screen and the frame has to recompute its own height on every resize rather than assume a fixed one.

A product detail page that sits a vertical clip (item 04) next to a reviews column runs into a different constraint: a gallery on the other side claims part of the row, so the leftover width changes from one screen size to the next, and that leftover is exactly what item 04 turns into its background-blur strength so the frame doesn't look pasted onto empty space.

A team that already shows a cookie-consent banner before anything else loads can wire item 09's pre-consent placeholder straight into that same banner logic, so the real embed never renders until a visitor has actually clicked accept.

What breaks first when the network is slow or consent gets revoked

What a slow network does to the lite-facade transition

Since item 02's switch is driven purely by elapsed time and never by a real load event, a genuinely slow connection wouldn't delay the transition at all — the facade flips to its "loaded" look at exactly FACADE_DELAY regardless of whether a real video behind it has actually arrived, which is the one place this demo's timer and a real loading indicator would visibly disagree.

What happens if item 08's press fires twice before it settles

A second click or Enter/Space while the expand is already interpolating changes nothing — pressAtOverride can't move the state backward, elapsed keeps counting from the original pressTime, and the card finishes the same EXPAND_MS interpolation it would have run from a single press. The pressed state does revert on its own, but only via the clock: resetToIdle runs on every cycle wrap and hands the card back to idle once per CYCLE_MS, never mid-expand.

What reversing item 09's fold after consent would need

The fold itself already reverses every cycle — resetToIdle fires on each wrap and un-consents the card, so the notice returns and the sequence replays — but nothing mid-cycle can trigger it, because resetToIdle is called only by the clock at the wrap and enterConsent blocks any second entry while consented. Keeping the card folded for good would mean skipping that reset; a real "withdraw consent" control that works mid-cycle would need its own reverse interpolation over CONSENT_FOLD_MS rather than reusing apply as written here. The full fold-and-unfold implementation, along with the other eight screens, sits behind phy8esss in the zip linked from this post.

Where values reshape the screen — ratio, elapsed time, brightness

Why item 01's readout has to read the DOM back after writing to it

Because aspect-ratio only computes the height once the browser recalculates layout from a new width, item 01 calls getBoundingClientRect right after setting frameEl.style.width, so the on-screen number matches what the browser actually rendered rather than merely what the script asked for.

Why item 04's blur strength depends on a value it doesn't fully control

The vertical frame's own width moves along a sine wave, but the leftover space it feeds into BG_BLUR_PX also depends on the stage's own width — resize the browser window and the blur recomputes from a different leftover even while the frame's internal animation keeps running unchanged. A youtube video embed squeezed into that same vertical layout inherits this leftover-to-blur trick rather than needing a special case of its own.

Why a like count and a gradient angle can share one clock but not one shape

Item 05 divides elapsed time by LIKE_INTERVAL and floors the result into a step, while item 06 divides the same kind of elapsed time by CYCLE_MS and keeps the fraction whole for a smooth angle — the same clock produces a staircase in one screen and a ramp in the other purely because of where the rounding happens.

Three variants, and why reduced-motion matters here

Variant What changes What it trades off
Lite-facade transition delay Item 02's FACADE_DELAY from 1200ms to 3000ms At 1200ms the switch from thumbnail to full frame happens so fast the lite-facade effect barely registers; 3000ms keeps the fake-thumbnail state around long enough to read as a slower load
Consent overlay fold duration Item 09's CONSENT_FOLD_MS from 200ms to 500ms At 200ms the frame appears the instant the notice vanishes, reading as an abrupt cut; 500ms makes the fold itself visible so the transition feels smooth
Vertical frame background blur Item 04's BG_BLUR_PX from 8px to 24px At a weak 8px the side background stays sharp enough that the vertical card looks pasted on top; 24px nearly dissolves the background so the eye lands on the frame naturally

This zip ships the 1200ms, 200ms, and 8px versions.

What reduced motion turns off, item by item

prefers-reduced-motion: reduce removes travel, not arithmetic, across all nine screens: each file checks window.matchMedia('(prefers-reduced-motion: reduce)') once, calls apply(0) a single time, and skips only the repeating loop — so item 01's width-to-ratio conversion, item 02's elapsed-time state flip, items 03 and 07's brightness pulse, item 04's leftover-to-blur remap, item 05's interval-to-counter step, item 06's angle sweep, and items 08 and 09's size-delta interpolation all still compute and still paint their result once. Browsing a responsive youtube embed codepen collection can't show this part — what a screen keeps recomputing after the first paint, not what the first frame looked like.

Questions people ask before wiring up an embed

Do these embeds load a real YouTube video or social post?

No — every video and profile image across all nine is a fixed-seed canvas thumbnail behind a placeholder channel name, and there is no real <iframe> src, SDK script, or outbound URL anywhere in the source.

Which of the nine respond to an actual click, rather than just autoplaying?

Only item 08 (click or Enter/Space) and item 09 (click) carry a real listener; items 01 through 07 run purely on requestAnimationFrame cycling on a fixed period with zero pointer, drag, or keyboard listeners attached. Items 08 and 09 still autoplay their transition on an elapsed-time fallback when no click arrives — the listener just starts it early.

Is any of this a youtube embed code generator I can paste a real video ID into?

No — none of the nine acts as a youtube embed code generator that outputs a working iframe src; each one reproduces a real embed convention's on-screen computation, such as a recomputed ratio or an elapsed-time switch, with a placeholder scene standing in for a live video ID.

Sources: MDN — aspect-ratio · MDN — prefers-reduced-motion · MDN — iframe loading · MDN — ARIA attributes

Where this set differs from a nine-widget round-up of testimonial, podcast, and newsletter cards is what each one imitates: that post builds standalone content widgets from scratch, while this one recomputes the loading and consent conventions real video and social platforms already ship. The same leftover-to-blur habit item 04 leans on shows up again wherever a drop zone has to make room for a file preview without a fixed layout, just applied to a dropped file's dimensions instead of a screen's width.

Enter the archive password

The password is inside this article. You will find it as you read.