getTargetVideoBitrate method
获取目标视频编码码率
returns 目标视频编码码率 默认:800
Implementation
Future<int> getTargetVideoBitrate() async {
  String strV = await _livePusherConfigMC.invokeMethod(
    'getTargetVideoBitrate',
    wrapArgs(),
  );
  int intV = int.parse(strV);
  return intV;
}