Chuyển cảnh xuyên qua

Mọi thứ trên trang này đều có bản máy đọc. Đưa agent link JSON, hoặc thêm MCP server gimgs rồi bảo nó tìm motion template.

1. Tải JSON — trong đó có công thức cảnh quay (timing, easing, bảng tham số, lỗi hay gặp) và toàn bộ source TSX.
2. Clone repo video-shotcraft; component import fixture chung từ demos/_fixtures và helper từ assets/lib.
3. Đăng ký component thành <Composition> trong project Remotion rồi render bằng `npx remotion render`, hoặc dựng lại công thức bằng engine của bạn.

curl -s https://gimgs.net/motion/transition-travel.json

git clone https://github.com/Vincentwei1021/video-shotcraft
# component: demos/transition/transition-travel/LetterformZoom.tsx, demos/transition/transition-travel/SharedElementMorph.tsx
npx remotion render <CompositionId> out.mp4

claude mcp add --transport http gimgs https://gimgs.net/mcp
# then: search_motion_templates / get_motion_template("transition-travel")

Use the video-shotcraft shot recipe "Chuyển cảnh xuyên qua" (Remotion composition, Apache-2.0) published on gimgs.net.
Recipe JSON (prompt = timing/easing/parameter table/pitfalls, files = TSX source): https://gimgs.net/motion/transition-travel.json
Raw TSX: https://gimgs.net/motion/transition-travel/template.html
Repository: https://github.com/Vincentwei1021/video-shotcraft  (component: demos/transition/transition-travel/LetterformZoom.tsx, demos/transition/transition-travel/SharedElementMorph.tsx; imports demos/_fixtures and assets/lib)
Spec: 1920x1080, 30 fps, 4.39s

1. Read the JSON and follow its "prompt" section (when to use, intention, parameter table, known pitfalls).
2. Adapt it for: <describe what you want>.
3. Either clone the repo, register the component as a <Composition> in a Remotion project and run npx remotion render <CompositionId> out.mp4 — or re-implement the recipe in your own engine (HTML/WAAPI works: keep the same timing and easing).

JSON · Markdown · llms.txt

// ===== demos/transition/transition-travel/LetterformZoom.tsx =====
import React, { useId } from 'react';
import { AbsoluteFill, Easing, interpolate, useCurrentFrame } from 'remotion';
import { FakeDashboard, G } from '../../_fixtures/Fixtures';

// letterform-zoom〔转场〕：巨型标题 "DASH" 字腔透出新页面，镜头急速推进
// 字母 A 的三角字腔，洞被撑满全屏的瞬间新页面接管，残余笔画滑出画外。
// 结构：底层 FakeDashboard B 静置全屏（微 dolly）；上层"米灰盖板"用
// SVG <mask>（白底 + 黑字）在字形处挖洞——洞里即透出 B；对盖板整组做
// transform-origin 对准 A 字腔中心的指数 scale 1→28（60f，前 20f 慢
// 后 40f 陡）。scale 过临界值后盖板快速退场 = 撤掉 mask，B 全屏接管。

const FS = 560; // 标题字号
// A 字腔（三角洞）中心：Helvetica Bold 度量估算——
// "DASH" 总宽 ≈ 2.833em，居中起点 x≈167，A 占 571–975 → 腔心 x≈773；
// 基线 y=741（大写居中），腔心约在基线上方 0.42em → y≈508。
const ORIGIN = { x: 773, y: 508 };
const BASELINE = 741;
const ZOOM_MAX = 28;

const titleFont: React.CSSProperties = {
  fontFamily: 'Helvetica Neue, Helvetica, Arial, sans-serif',
  fontWeight: 900,
  fontSize: FS,
};

export const LetterformZoom: React.FC = () => {
  const frame = useCurrentFrame();
  // mask ID 按实例生成，多实例同场不串引（useId 的 «:» 在 url() 里非法，需清洗）
  const cutId = `lfz-cut-${useId().replace(/[^a-zA-Z0-9]/g, '')}`;

  // 0–25f 建立 hold；25–85f 推进。慢起 bezier 叠指数尺度 = 前段慢、后段陡
  const t = interpolate(frame, [25, 85], [0, 1], {
    extrapolateLeft: 'clamp',
    extrapolateRight: 'clamp',
    easing: Easing.bezier(0.6, 0, 0.85, 0.5),
  });
  const scale = Math.pow(ZOOM_MAX, t); // 指数推进：等比的"穿越"速度感

  // scale 过临界值（洞已撑满画面中部）→ 盖板残余笔画边外飞边撤场（撤 mask）
  const plateOpacity = interpolate(scale, [15, 24], [1, 0], {
    extrapolateLeft: 'clamp',
    extrapolateRight: 'clamp',
  });

  // 速度模糊：期望视觉模糊量随推进升高；CSS filter 会被 transform 放大，
  // 故除以 scale 补偿
  const visBlur = interpolate(t, [0, 0.45, 1], [0, 1.5, 16], {
    extrapolateLeft: 'clamp',
    extrapolateRight: 'clamp',
  });
  const blurCss = visBlur / scale;

  // 新页面微 dolly：推进期跟着轻推 1→1.1，接管后 25f 内落定回 1（收势）
  const bScale =
    frame < 85
      ? interpolate(t, [0, 1], [1, 1.1])
      : interpolate(frame, [85, 110], [1.1, 1], {
          extrapolateLeft: 'clamp',
          extrapolateRight: 'clamp',
          easing: Easing.out(Easing.cubic),
        });

  return (
    <AbsoluteFill style={{ background: G.bg, overflow: 'hidden' }}>
      {/* 新页面：先只在字腔里透出，接管后全屏（110–140f 静止收尾） */}
      <div
        style={{
          position: 'absolute',
          inset: 0,
          transform: `scale(${bScale})`,
          transformOrigin: `${ORIGIN.x}px ${ORIGIN.y}px`,
        }}
      >
        <FakeDashboard variant="B" />
      </div>

      {/* 米灰盖板（字形挖洞）+ 字缘描边 + 副标灰条：整组指数推进后飞出画外 */}
      {plateOpacity > 0 && (
        <div
          style={{
            position: 'absolute',
            inset: 0,
            transform: `scale(${scale})`,
            transformOrigin: `${ORIGIN.x}px ${ORIGIN.y}px`,
            opacity: plateOpacity,
            filter: blurCss > 0.02 ? `blur(${blurCss}px)` : undefined,
          }}
        >
          <svg
            width={1920}
            height={1080}
            viewBox="0 0 1920 1080"
            style={{ position: 'absolute', inset: 0, display: 'block' }}
          >
            <defs>
              <mask id={cutId}>
                <rect width={1920} height={1080} fill="#fff" />
                <text
                  x={960}
                  y={BASELINE}
                  textAnchor="middle"
                  fill="#000"
                  style={titleFont}
                >
                  DASH
                </text>
              </mask>
            </defs>
            <rect width={1920} height={1080} fill={G.bg} mask={`url(#${cutId})`} />
            {/* 字缘细描边：让"洞"的轮廓在米灰上读得清 */}
            <text
              x={960}
              y={BASELINE}
              textAnchor="middle"
              fill="none"
              stroke={G.ink}
              strokeWidth={3}
              opacity={0.3}
              style={titleFont}
            >
              DASH
            </text>
          </svg>
          {/* 副标灰条：随盖板一起被甩出画外，强化"页面元素残余"感 */}
          <div
            style={{
              position: 'absolute',
              left: 0,
              right: 0,
              top: 812,
              display: 'flex',
              justifyContent: 'center',
              gap: 16,
            }}
          >
            <div style={{ width: 240, height: 16, background: G.bar, borderRadius: 8 }} />
            <div style={{ width: 130, height: 16, background: G.line, borderRadius: 8 }} />
          </div>
        </div>
      )}
    </AbsoluteFill>
  );
};


// ===== demos/transition/transition-travel/SharedElementMorph.tsx =====
import React from 'react';
import { AbsoluteFill, Easing, interpolate, useCurrentFrame } from 'remotion';
import { FakeDashboard, Card, G } from '../../_fixtures/Fixtures';

// shared-element-morph〔转场〕：全屏特写面板收缩、位移、长出圆角，
// 严丝合缝飞落进 dashboard 网格里它所属的卡片槽位，落座带 3% 过冲。
// 观众感觉是同一个物体被镜头送回原位（FLIP 共享元素转场）。
//
// 目标槽位 = FakeDashboard A 中列第二行那格（seed 5），按 fixtures 布局精确推算：
//   侧栏 220 + 网格 padding 36 → 列宽 (1920-220-72-56)/3 = 524
//   头部 72 + padding 36     → 行高 (1008-72-28)/2   = 454
//   中列 x = 220+36+524+28 = 808；第二行 y = 72+36+454+28 = 590
const SLOT = { x: 808, y: 590, w: 524, h: 454, r: 14, seed: 5 };
const FULL = { x: 0, y: 0, w: 1920, h: 1080, r: 0 };

// 节拍：0–35 全屏特写 hold ｜ 35–60 morph 25f（bezier 0.4,0,0.2,1 → 1.03）
//       60–70 过冲回弹落座 ｜ 70–130 静止收尾
const MORPH_START = 35;
const MORPH_END = 60;
const SETTLE_END = 70;

const lerp = (a: number, b: number, t: number) => a + (b - a) * t;

export const SharedElementMorph: React.FC = () => {
  const frame = useCurrentFrame();

  // 位置/尺寸/圆角共用同一条进度曲线：25f 冲到 1.03，再 10f 弹回 1
  const drive = interpolate(frame, [MORPH_START, MORPH_END], [0, 1.03], {
    extrapolateLeft: 'clamp',
    extrapolateRight: 'clamp',
    easing: Easing.bezier(0.4, 0, 0.2, 1),
  });
  const settle = interpolate(frame, [MORPH_END, SETTLE_END], [1.03, 1], {
    extrapolateLeft: 'clamp',
    extrapolateRight: 'clamp',
    easing: Easing.out(Easing.cubic),
  });
  const p = frame <= MORPH_END ? drive : settle;

  const x = lerp(FULL.x, SLOT.x, p);
  const y = lerp(FULL.y, SLOT.y, p);
  const w = lerp(FULL.w, SLOT.w, p);
  const h = lerp(FULL.h, SLOT.h, p);
  const r = lerp(FULL.r, SLOT.r, p);

  // 内容是同一张卡：按目标尺寸渲染，等比放大铺满全屏（全屏 = 这张卡的特写），
  // 收缩过程中内容随容器一起缩小，强化"同一个物体"的感知
  const contentScale = w / SLOT.w;

  // 投影随尺寸缩小：悬空时大而深，落座后收敛到 fixtures 卡片原生投影量级
  const ps = Math.min(Math.max(p, 0), 1);
  const shadowY = lerp(36, 2, ps);
  const shadowBlur = lerp(110, 8, ps);
  const shadowAlpha = lerp(0.32, 0.06, ps);

  // 背景 dashboard 先 0.9 透明度待命，落座瞬间提到 1
  const bgOpacity = interpolate(frame, [MORPH_END - 2, MORPH_END + 3], [0.9, 1], {
    extrapolateLeft: 'clamp',
    extrapolateRight: 'clamp',
    easing: Easing.out(Easing.quad),
  });

  return (
    <AbsoluteFill style={{ background: G.bg, overflow: 'hidden' }}>
      <div style={{ opacity: bgOpacity }}>
        <FakeDashboard variant="A" />
      </div>
      {/* 共享元素：全屏特写 → 精确飞落进槽位 */}
      <div
        style={{
          position: 'absolute',
          left: x,
          top: y,
          width: w,
          height: h,
          borderRadius: r,
          overflow: 'hidden',
          background: G.card,
          boxShadow: `0 ${shadowY}px ${shadowBlur}px rgba(0,0,0,${shadowAlpha})`,
        }}
      >
        <div
          style={{
            position: 'absolute',
            left: 0,
            top: 0,
            transform: `scale(${contentScale})`,
            transformOrigin: 'top left',
          }}
        >
          <Card
            w={SLOT.w}
            h={SLOT.h}
            seed={SLOT.seed}
            style={{ boxShadow: 'none', borderRadius: r / Math.max(contentScale, 0.0001) }}
          />
        </div>
      </div>
    </AbsoluteFill>
  );
};

1. Read the recipe
   Prompt = when to use, intention, parameter table with typical values and how each one feels, known pitfalls. Treat values as calibrated starting points.
2. Get the code
   tool: git
   git clone https://github.com/Vincentwei1021/video-shotcraft && cd video-shotcraft && npm install
3. Register + render
   tool: remotion
   npx remotion render <CompositionId> out.mp4 # component: demos/transition/transition-travel/LetterformZoom.tsx, demos/transition/transition-travel/SharedElementMorph.tsx
4. Or re-implement
   Port the timing/easing from the recipe to HTML + WAAPI (gimgs motion contract) or any engine; keep the same segment windows and easing.