75 lines
1.7 KiB
JavaScript
75 lines
1.7 KiB
JavaScript
/**
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* 将 public/banner.mp4（或 banner.source.mp4）压成首屏 Hero 尺寸。
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* 用法：pnpm run optimize:banner
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* 可选：把未压缩母带重命名为 banner.source.mp4，脚本会优先读取它并写回 banner.mp4。
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*/
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import { execFileSync } from "node:child_process";
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import fs from "node:fs";
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import path from "node:path";
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import { fileURLToPath } from "node:url";
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import ffmpegPath from "ffmpeg-static";
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const root = path.join(path.dirname(fileURLToPath(import.meta.url)), "..");
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const publicDir = path.join(root, "public");
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const sourceCandidates = [
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path.join(publicDir, "banner.source.mp4"),
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path.join(publicDir, "banner.mp4"),
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];
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const input = sourceCandidates.find((p) => fs.existsSync(p));
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if (!input || !ffmpegPath) {
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console.error("缺少 banner.mp4 / banner.source.mp4 或 ffmpeg 二进制。");
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process.exit(1);
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}
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const outMp4 = path.join(publicDir, "banner.mp4");
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const outWebm = path.join(publicDir, "banner.webm");
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const tmpMp4 = path.join(publicDir, "banner.opt.mp4");
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const scale = "scale=1920:-2";
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const common = ["-y", "-i", input, "-an", "-vf", scale, "-pix_fmt", "yuv420p"];
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console.log(`输入: ${input}`);
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execFileSync(
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ffmpegPath,
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[
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...common,
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"-c:v",
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"libx264",
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"-preset",
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"slow",
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"-crf",
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"28",
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"-movflags",
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"+faststart",
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tmpMp4,
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],
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{ stdio: "inherit" },
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);
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execFileSync(
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ffmpegPath,
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[
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...common,
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"-c:v",
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"libvpx-vp9",
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"-crf",
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"35",
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"-b:v",
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"0",
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"-row-mt",
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"1",
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outWebm,
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],
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{ stdio: "inherit" },
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);
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fs.copyFileSync(tmpMp4, outMp4);
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fs.unlinkSync(tmpMp4);
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for (const f of [outMp4, outWebm]) {
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const kb = (fs.statSync(f).size / 1024).toFixed(1);
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console.log(`${path.basename(f)}: ${kb} KiB`);
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}
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