批量合并视频和字幕

use_ffmpeg_to_combine_video_and_subtitles.js

const path = require("path");
const { execSync } = require("child_process");
const fs = require("fs");

const makeNewMkv = (dirPath, mkvPath, assPath) => {
  const mkvName = path.basename(mkvPath).match(/S[\d]{2}E[\d]{2}/)[0];
  console.log("mkvName", mkvName);
  if (fs.existsSync(path.resolve(dirPath, mkvName + ".mkv"))) {
    console.log(`${mkvName}已存在`);
    return;
  }
  const stdout = execSync(
    `ffmpeg -i "${mkvPath}" -i "${assPath}" -map 0:v -map 0:a -map 1:s -c copy ${mkvName}.mkv`,
    {
      cwd: dirPath,
    }
  );
  console.log(stdout.toString());
};

const main = async (dirPath) => {
  // 读取dirPath下所有的文件
  //
  const allFiles = fs.readdirSync(dirPath);
  allFiles.forEach((file) => {
    const filePath = path.resolve(dirPath, file);
    const fileStat = fs.statSync(filePath);
    // const fileBaseName = path.basename(filePath);
    if (fileStat.isFile() && path.extname(filePath) === ".mkv") {
      console.log("mkv:", path.basename(filePath, ".mkv") + ".简体&英文");
      const assFile = allFiles.find((file) => {
        console.log("ass:", path.basename(file, ".ass"));
        return (
          path.basename(file, ".ass") ===
          path.basename(filePath, ".mkv") + ".简体&英文"
        );
      });
      if (!assFile) {
        return;
      }
      console.log(assFile);
      makeNewMkv(dirPath, filePath, path.resolve(dirPath, assFile));
      // process.exit(0);
    }
  });
};

// main(path.resolve("./第三季"));
// main(path.resolve("./第四季"));
// main(path.resolve("./第五季"));
main(path.resolve("./第六季"));

代码结构比较混乱，每个可能变动的点应该抽取成单独的函数来编写。下次得注意。