wehub-resource-sync
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415 lines
13 KiB
HTML
Vendored
415 lines
13 KiB
HTML
Vendored
<!doctype html>
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<html lang="en">
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<head>
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<meta charset="UTF-8" />
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<meta name="viewport" content="width=1920, height=1080" />
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<title>Weight Shift</title>
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<link rel="preconnect" href="https://fonts.googleapis.com" />
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<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
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<link
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href="https://fonts.googleapis.com/css2?family=Montserrat:wght@300;700&display=swap"
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rel="stylesheet"
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/>
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<script src="https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/gsap.min.js"></script>
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<style>
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*,
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*::before,
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*::after {
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box-sizing: border-box;
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}
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html,
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body {
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width: 1920px;
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height: 1080px;
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margin: 0;
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overflow: hidden;
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background: #000000;
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font-family: "Montserrat", Arial, sans-serif;
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}
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#weight-shift {
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position: relative;
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width: 1920px;
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height: 1080px;
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overflow: hidden;
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background: #000000;
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}
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#avatar-video {
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position: absolute;
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inset: 0;
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z-index: 1;
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width: 100%;
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height: 100%;
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object-fit: cover;
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}
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.caption-layer {
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position: absolute;
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inset: 0;
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z-index: 20;
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pointer-events: none;
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transform: translateZ(0);
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}
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.safe-zone {
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position: absolute;
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bottom: 100px;
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left: 50%;
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transform: translateX(-50%);
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width: 1400px;
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height: 278px;
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display: flex;
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align-items: center;
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justify-content: center;
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}
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.caption-group {
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position: absolute;
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left: 0;
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top: 0;
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width: 1400px;
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height: 278px;
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display: flex;
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align-items: center;
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justify-content: center;
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opacity: 0;
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transform-origin: 50% 50%;
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will-change: transform;
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backface-visibility: hidden;
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}
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.caption-copy {
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display: flex;
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flex-direction: column;
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align-items: center;
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justify-content: center;
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max-width: 1400px;
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text-align: center;
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}
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.caption-line {
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display: flex;
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align-items: center;
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justify-content: center;
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gap: 12px;
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width: max-content;
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max-width: 1400px;
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line-height: 1.1;
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white-space: nowrap;
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color: #ffffff;
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font-family: "Montserrat", Arial, sans-serif;
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font-weight: 300;
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font-size: 72px;
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letter-spacing: -0.03em;
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text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
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text-transform: lowercase;
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}
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</style>
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</head>
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<body>
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<div
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id="weight-shift"
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data-composition-id="caption-weight-shift"
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data-start="0"
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data-duration="8"
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data-fps="30"
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data-width="1920"
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data-height="1080"
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>
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<video
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id="avatar-video"
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muted
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playsinline
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data-start="0"
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data-duration="8"
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data-track-index="0"
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data-has-audio="false"
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></video>
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<div class="caption-layer" aria-hidden="true">
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<div id="caption-stage" class="safe-zone"></div>
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</div>
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</div>
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<script>
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var DURATION = 8;
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var SAFE_ZONE_WIDTH = 1400;
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var MAX_LINE_WIDTH = SAFE_ZONE_WIDTH - 40;
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var CAPTION_FONT_SIZE = 72;
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var MAX_WORDS_PER_GROUP = 4;
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var WORD_SPACING = 12;
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var PAUSE_THRESHOLD = 0.1;
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var ENTRY_DURATION = 100 / 1000;
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var WEIGHT_TRANSITION = 100 / 1000;
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var FONT_WIDTH_SAFETY = 1.14;
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var FONT_WEIGHT_LIGHT = 300;
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var FONT_WEIGHT_BOLD = 700;
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var TRANSCRIPT = [
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{ text: "Every", start: 0.0, end: 0.3 },
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{ text: "great", start: 0.3, end: 0.55 },
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{ text: "video", start: 0.55, end: 0.85 },
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{ text: "starts", start: 0.85, end: 1.1 },
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{ text: "with", start: 1.1, end: 1.25 },
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{ text: "a", start: 1.25, end: 1.35 },
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{ text: "single", start: 1.35, end: 1.65 },
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{ text: "frame.", start: 1.65, end: 2.0 },
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{ text: "HyperFrames", start: 2.1, end: 2.65 },
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{ text: "lets", start: 2.65, end: 2.85 },
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{ text: "you", start: 2.85, end: 2.95 },
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{ text: "write", start: 2.95, end: 3.15 },
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{ text: "HTML", start: 3.15, end: 3.55 },
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{ text: "and", start: 3.55, end: 3.65 },
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{ text: "render", start: 3.65, end: 3.95 },
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{ text: "professional", start: 3.95, end: 4.45 },
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{ text: "video.", start: 4.45, end: 4.8 },
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{ text: "No", start: 4.9, end: 5.05 },
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{ text: "timeline.", start: 5.05, end: 5.45 },
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{ text: "No", start: 5.5, end: 5.65 },
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{ text: "drag", start: 5.65, end: 5.85 },
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{ text: "and", start: 5.85, end: 5.95 },
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{ text: "drop.", start: 5.95, end: 6.25 },
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{ text: "Just", start: 6.35, end: 6.55 },
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{ text: "code", start: 6.55, end: 6.8 },
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{ text: "that", start: 6.8, end: 6.95 },
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{ text: "becomes", start: 6.95, end: 7.3 },
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{ text: "cinema.", start: 7.3, end: 7.7 },
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];
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function normalizeWords(rawWords) {
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return rawWords
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.map(function (item) {
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return {
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text: String(item.word || item.text || "").trim(),
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start: Math.max(0, Number(item.start) || 0),
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end: Math.min(DURATION, Math.max(Number(item.start) || 0, Number(item.end) || 0)),
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};
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})
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.filter(function (word) {
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return word.text.length > 0;
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});
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}
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var _fitCanvas = document.createElement("canvas");
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var _fitCtx = _fitCanvas.getContext("2d");
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function fitFontSize(text, baseFontSize, fontWeight, fontFamily, maxWidth) {
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var size = baseFontSize;
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var minSize = Math.floor(baseFontSize * 0.45);
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while (size > minSize) {
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_fitCtx.font = fontWeight + " " + size + "px " + fontFamily;
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if (_fitCtx.measureText(text).width <= maxWidth) return size;
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size -= 2;
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}
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return minSize;
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}
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var measureCanvas = document.createElement("canvas");
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var measureContext = measureCanvas.getContext("2d");
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measureContext.font = "700 " + CAPTION_FONT_SIZE + "px Montserrat";
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function measureWord(word) {
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return measureContext.measureText(word.text.toLowerCase()).width * FONT_WIDTH_SAFETY;
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}
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function measureLineWidth(words) {
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return words.reduce(function (total, word, index) {
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return total + measureWord(word) + (index ? WORD_SPACING : 0);
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}, 0);
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}
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function fitsInTwoLines(words) {
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return measureLineWidth(words) <= MAX_LINE_WIDTH * 1.8;
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}
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function splitLines(words) {
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if (words.length < 2) {
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return [{ words: words, startIndex: 0 }];
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}
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var bestSplit = Math.ceil(words.length / 2);
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var bestDiff = Infinity;
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for (var s = 1; s < words.length; s++) {
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var w1 = measureLineWidth(words.slice(0, s));
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var w2 = measureLineWidth(words.slice(s));
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if (w1 <= MAX_LINE_WIDTH && w2 <= MAX_LINE_WIDTH) {
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var diff = Math.abs(w1 - w2);
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if (diff < bestDiff) {
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bestDiff = diff;
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bestSplit = s;
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}
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}
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}
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var result = [];
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var line1 = words.slice(0, bestSplit);
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var line2 = words.slice(bestSplit);
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if (line1.length) result.push({ words: line1, startIndex: 0 });
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if (line2.length) result.push({ words: line2, startIndex: line1.length });
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return result;
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}
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function avoidSingleWordGroups(groups) {
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var out = [];
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groups.forEach(function (group) {
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if (
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group.words.length === 1 &&
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out.length > 0 &&
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out[out.length - 1].words.length < MAX_WORDS_PER_GROUP
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) {
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out[out.length - 1] = makeGroup(out[out.length - 1].words.concat(group.words));
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} else {
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out.push(group);
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}
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});
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for (var i = 0; i < out.length; i++) {
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if (out[i].words.length !== 1) continue;
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if (i + 1 < out.length && out[i + 1].words.length < MAX_WORDS_PER_GROUP) {
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out[i] = makeGroup(out[i].words.concat(out[i + 1].words));
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out.splice(i + 1, 1);
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} else if (i > 0 && out[i - 1].words.length < MAX_WORDS_PER_GROUP) {
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out[i - 1] = makeGroup(out[i - 1].words.concat(out[i].words));
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out.splice(i, 1);
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i--;
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}
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}
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return out;
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}
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function makeGroups(words) {
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var groups = [];
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var current = [];
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words.forEach(function (word, index) {
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var nextWord = words[index + 1];
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var testGroup = current.concat([word]);
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if (testGroup.length > MAX_WORDS_PER_GROUP || !fitsInTwoLines(testGroup)) {
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if (current.length) groups.push(makeGroup(current));
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current = [word];
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return;
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}
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current.push(word);
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var punctuation = /[,.:!?]$/.test(word.text);
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var pause = nextWord ? nextWord.start - word.end : 0;
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if (
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!nextWord ||
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punctuation ||
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pause >= PAUSE_THRESHOLD ||
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current.length >= MAX_WORDS_PER_GROUP
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) {
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groups.push(makeGroup(current));
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current = [];
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}
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});
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if (current.length) groups.push(makeGroup(current));
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return avoidSingleWordGroups(groups);
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}
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function makeGroup(words) {
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return {
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words: words.slice(),
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lines: splitLines(words),
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start: words[0].start,
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end: words[words.length - 1].end,
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};
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}
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function buildCaptions(groups) {
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var stage = document.getElementById("caption-stage");
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groups.forEach(function (group, groupIndex) {
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var groupText = group.words
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.map(function (w) {
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return w.text.toLowerCase();
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})
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.join(" ");
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var computedSize = fitFontSize(
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groupText,
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CAPTION_FONT_SIZE,
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"700",
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"Montserrat",
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MAX_LINE_WIDTH,
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);
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var groupEl = document.createElement("div");
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var copyEl = document.createElement("div");
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groupEl.id = "caption-group-" + groupIndex;
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groupEl.className = "caption-group";
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copyEl.className = "caption-copy";
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group.lines.forEach(function (line, lineIndex) {
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var lineEl = document.createElement("div");
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lineEl.className = "caption-line";
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lineEl.id = "caption-group-" + groupIndex + "-line-" + lineIndex;
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lineEl.style.fontWeight = lineIndex === 0 ? FONT_WEIGHT_BOLD : FONT_WEIGHT_LIGHT;
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lineEl.style.fontSize = computedSize + "px";
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line.words.forEach(function (word, wordIndex) {
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var wordEl = document.createElement("span");
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wordEl.textContent = word.text.toLowerCase();
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wordEl.style.display = "inline-block";
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lineEl.appendChild(wordEl);
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});
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copyEl.appendChild(lineEl);
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});
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groupEl.appendChild(copyEl);
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stage.appendChild(groupEl);
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});
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}
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var WORDS = normalizeWords(TRANSCRIPT);
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var GROUPS = makeGroups(WORDS);
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buildCaptions(GROUPS);
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window.__timelines = window.__timelines || {};
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var tl = gsap.timeline({ paused: true });
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var visibleStarts = GROUPS.map(function (group, groupIndex) {
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var prev = GROUPS[groupIndex - 1];
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var availableGap = prev ? Math.max(0, group.start - prev.end) : ENTRY_DURATION;
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var entryLead = Math.min(ENTRY_DURATION, availableGap);
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return Math.max(0, group.start - entryLead);
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});
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var allGroupEls = GROUPS.map(function (_, i) {
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return document.getElementById("caption-group-" + i);
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});
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GROUPS.forEach(function (group, groupIndex) {
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var groupEl = allGroupEls[groupIndex];
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var visibleStart = visibleStarts[groupIndex];
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var visibleEnd = groupIndex < GROUPS.length - 1 ? visibleStarts[groupIndex + 1] : DURATION;
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allGroupEls.forEach(function (otherEl, otherIndex) {
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if (otherIndex !== groupIndex) tl.set(otherEl, { opacity: 0 }, visibleStart);
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});
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tl.set(groupEl, { opacity: 0, scale: 0.85 }, visibleStart);
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tl.to(
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groupEl,
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{ opacity: 1, scale: 1, duration: ENTRY_DURATION, ease: "power3.out", force3D: true },
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visibleStart,
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);
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if (group.lines.length === 2) {
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var line1El = document.getElementById("caption-group-" + groupIndex + "-line-0");
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var line2El = document.getElementById("caption-group-" + groupIndex + "-line-1");
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var line2FirstWord = group.lines[1].words[0];
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var switchTime = line2FirstWord.start;
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tl.to(
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line1El,
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{ fontWeight: FONT_WEIGHT_LIGHT, duration: WEIGHT_TRANSITION, ease: "power2.out" },
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switchTime,
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);
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tl.to(
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line2El,
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{ fontWeight: FONT_WEIGHT_BOLD, duration: WEIGHT_TRANSITION, ease: "power2.out" },
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switchTime,
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);
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}
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tl.set(groupEl, { opacity: 0 }, visibleEnd);
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});
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window.__timelines["caption-weight-shift"] = tl;
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</script>
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</body>
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</html>
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