diff --git a/src/mynteye/api/processor.cc b/src/mynteye/api/processor.cc
index 7559dc6..6e3620c 100644
--- a/src/mynteye/api/processor.cc
+++ b/src/mynteye/api/processor.cc
@@ -152,8 +152,6 @@ bool Processor::Process(std::shared_ptr<Object> in) {
 std::shared_ptr<Object> Processor::GetOutput() {
   std::lock_guard<std::mutex> lk(mtx_result_);
   return std::shared_ptr<Object>(std::move(output_result_));
-  // to make sure that one frame can just be get once!
-  output_result_ = nullptr;
 }
 
 std::uint64_t Processor::GetDroppedCount() {
@@ -267,6 +265,8 @@ Processor::process_type Processor::ProcessInputConnection() {
 api::StreamData Processor::GetStreamData(const Stream &stream) {
   auto sum = getStreamsSum();
   auto &&out = GetOutput();
+  // to make sure that one frame can just be get once!
+  output_result_ = nullptr;
   Synthetic::Mode enable_mode = Synthetic::MODE_OFF;
   auto streams = getTargetStreams();
   for (auto it_s : streams) {