Function canUseGpuEncoder

packages/engine/src/utils/gpuEncoder.ts:149–190

(encoder: ConcreteGpuEncoder)

}

async function canUseGpuEncoder(encoder: ConcreteGpuEncoder): Promise<boolean> {
  return new Promise((resolve) => {
    let settled = false;
    let timedOut = false;
    let killTimer: ReturnType<typeof setTimeout> | undefined;
    let stderr = "";
    const finish = (usable: boolean) => {
      if (settled) return;
      settled = true;
      clearTimeout(timer);
      if (killTimer) clearTimeout(killTimer);
      resolve(usable);
    };
    const ffmpeg = spawn(getFfmpegBinary(), getProbeArgs(encoder), {
      stdio: ["ignore", "ignore", "pipe"],
    });

    ffmpeg.stderr?.on("data", (data) => {
      stderr += data.toString();
    });

    const timer = setTimeout(() => {
      timedOut = true;
      ffmpeg.kill("SIGTERM");
      killTimer = setTimeout(() => {
        ffmpeg.kill("SIGKILL");
        finish(false);
      }, GPU_PROBE_KILL_GRACE_MS);
    }, GPU_PROBE_TIMEOUT_MS);

    ffmpeg.on("close", (code, signal) => {
      const usable = code === 0;
      logGpuProbeFailure(encoder, { code, signal, stderr, timedOut });
      finish(usable);
    });

    ffmpeg.on("error", (error) => {
      logGpuProbeFailure(encoder, { error, timedOut });
      finish(false);
    });
  });
}

function logGpuProbeFailure(
  encoder: ConcreteGpuEncoder,