review-loop

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Original

English

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Translation

Chinese

Review loop

审核循环

You can't watch the video, but you can look at frames. Never report a video as done without looking at contact sheets of the current render.

你无法直接观看视频，但可以查看帧画面。在未查看当前渲染版本的联系表之前，绝对不要宣称视频已完成。

Loop

循环流程

```
npm run draft
```
— half-resolution render to
```
out/draft.mp4
```
(fast).
```
npm run sheet
```
— one frame per timeline beat, 0.3 s after it so motion has settled, tiled 4×2 into
```
out/sheets/beats-N.png
```
. Each tile is labelled with its timestamp.
Open every sheet image and go through the checklist below.

Zoom in on anything suspicious:

npm run sheet -- --from 3 --to 5 --every 0.2

to scrub a transition,

```
npm run sheet -- 3.7 3.75 3.8
```
for exact moments,

npm run still -- out/still.png --frame=222

for one full-resolution frame.

Fix, then go back to step 1. Stop when a full pass finds nothing.

Final:

npm run build

, then

npm run sheet -- --video out/effort.mp4

and

npm run wave

```
npm run draft
```
— 以半分辨率渲染到
```
out/draft.mp4
```
（渲染速度快）。
```
npm run sheet
```
— 在每个时间线节拍点取一帧，取帧时间为节拍点后0.3秒（确保运动已稳定），以4×2的布局拼接为联系表，保存至
```
out/sheets/beats-N.png
```
。每个帧块都标注了对应的时间戳。
打开所有联系表图片，对照下方的检查清单逐一审核。
对任何可疑之处放大查看：
- ```
npm run sheet -- --from 3 --to 5 --every 0.2
```
  用于逐帧排查转场效果，
- ```
npm run sheet -- 3.7 3.75 3.8
```
  用于查看精确时间点的画面，
- ```
npm run still -- out/still.png --frame=222
```
  用于导出单张全分辨率帧。
修复问题后回到步骤1。当完整走一遍流程未发现任何问题时即可停止。

最终步骤：执行

npm run build

，然后运行

npm run sheet -- --video out/effort.mp4

和

npm run wave

。

Checklist

检查清单

Composition

One focal point per frame. If two things compete, one of them waits.
Nothing collides or overlaps unintentionally, especially during transitions where an exiting and an entering element share space.
Safe area: nothing important within ~60 px of an edge.
Frame 0 is a real image, not black (it's the X thumbnail).

Type

Nothing clipped by a mask, container or the frame when it shouldn't be.
Key message readable when the sheet tile is shrunk to phone width.
Text isn't moving while it's meant to be read.

Timing

Each readable state holds long enough (see
```
motion-design
```
§4). If a tile mid-hold shows text still animating, the hold is too short.
Scenes overlap instead of cutting to empty frames.
Exits are faster than entrances.

Consistency

Only palette colors from
```
C
```
; the accent marks the point of the frame.
Same element looks the same in every scene it appears in.

Sound (after

npm run wave

)

Transients sit on beat lines in
```
out/wave.png
```
.
−14 LUFS ±1, true peak ≤ −1 dBFS.

构图

每帧只有一个视觉焦点。如果有两个元素产生视觉竞争，其中一个需要延后出现。
没有意外的碰撞或重叠，尤其是在转场过程中，退出和进入的元素共享空间时更要注意。
安全区域：重要内容不得位于距离边缘约60像素的范围内。
第0帧应为真实画面，不能是全黑（该帧会作为X平台的视频缩略图）。

文字排版

文字不会被蒙版、容器或画面边缘意外裁切。
当联系表帧块缩小到手机屏幕宽度时，核心信息仍清晰可读。
需要阅读的文字不应处于移动状态。

时间节奏

每个可读状态的停留时间足够长（参见
```
motion-design
```
第4节）。如果处于停留阶段的帧块中文字仍在动画状态，说明停留时间过短。
场景之间采用重叠过渡，而非切到空帧。
元素退出的速度快于进入的速度。

一致性

仅使用
```
C
```
中定义的调色板颜色；强调色用于突出帧的核心重点。
同一元素在所有出现的场景中外观保持一致。

声音（执行

npm run wave

后检查）

声音瞬态信号对齐
```
out/wave.png
```
中的节拍线。
响度为 −14 LUFS ±1，真实峰值 ≤ −1 dBFS。

Report

报告要求

When you finish, say what you checked, what you fixed, and which sheet shows it. Don't claim a fix you haven't re-rendered and looked at.

完成后，请说明你检查了哪些内容、修复了哪些问题，以及哪张联系表可以佐证修复效果。不要宣称你尚未重新渲染并查看过的修复内容。