Function transcodeToMp4

packages/cli/src/commands/init.ts:141–172

(inputPath: string, outputPath: string)

// hasFFmpeg is imported from whisper/manager.ts to avoid duplication

function transcodeToMp4(inputPath: string, outputPath: string): Promise<boolean> {
  return new Promise((resolvePromise) => {
    const ffmpegPath = findFFmpeg();
    if (!ffmpegPath) {
      resolvePromise(false);
      return;
    }
    const child = spawn(
      ffmpegPath,
      [
        "-i",
        inputPath,
        "-c:v",
        "libx264",
        "-preset",
        "fast",
        "-crf",
        "18",
        "-c:a",
        "aac",
        "-b:a",
        "192k",
        "-y",
        outputPath,
      ],
      { stdio: "pipe" },
    );

    child.on("close", (code) => resolvePromise(code === 0));
    child.on("error", () => resolvePromise(false));
  });
}

// ---------------------------------------------------------------------------
// Static template helpers