Function runFfprobe

packages/engine/src/utils/ffprobe.ts:8–42

Spawn ffprobe with given args, return stdout. Throws on non-zero exit or missing binary.

(args: string[])

/** Spawn ffprobe with given args, return stdout. Throws on non-zero exit or missing binary. */
function runFfprobe(args: string[]): Promise<string> {
  return new Promise((resolve, reject) => {
    const command = getFfprobeBinary();
    const proc = spawn(command, args);
    let stdout = "";
    let stderr = "";
    proc.stdout.on("data", (data) => {
      stdout += data.toString();
    });
    proc.stderr.on("data", (data) => {
      stderr += data.toString();
    });
    proc.on("close", (code) => {
      if (code !== 0) {
        reject(new Error(`[FFmpeg] ffprobe exited with code ${code}: ${stderr}`));
      } else {
        resolve(stdout);
      }
    });
    proc.on("error", (err) => {
      if ((err as NodeJS.ErrnoException).code === "ENOENT") {
        const configured = process.env[FFPROBE_PATH_ENV]?.trim();
        reject(
          new Error(
            configured
              ? `[FFmpeg] ffprobe not found at ${FFPROBE_PATH_ENV}="${configured}". Please install FFmpeg.`
              : "[FFmpeg] ffprobe not found. Please install FFmpeg.",
          ),
        );
      } else {
        reject(err);
      }
    });
  });
}

function parseProbeJson(stdout: string): FFProbeOutput {
  try {