Change the threshold for external VNR.

webrtc/modules/video_processing/video_denoiser.cc

 /*
  *  Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 230 matching lines @@
   const uint8_t* v_src = frame.buffer(kVPlane);
   uint8_t* y_dst = denoised_frame->buffer(kYPlane);
   uint8_t* u_dst = denoised_frame->buffer(kUPlane);
   uint8_t* v_dst = denoised_frame->buffer(kVPlane);
   uint8_t* y_dst_prev = denoised_frame_prev->buffer(kYPlane);
   memset(x_density_.get(), 0, mb_cols_);
   memset(y_density_.get(), 0, mb_rows_);
   memset(moving_object_.get(), 1, mb_cols_ * mb_rows_);
 
   uint8_t noise_level = noise_estimation_enabled ? ne_->GetNoiseLevel() : 0;
-  int thr_var_base = 16 * 16 * 5;
+  int thr_var_base = 16 * 16 * 2;
   // Loop over blocks to accumulate/extract noise level and update x/y_density
   // factors for moving object detection.
   for (int mb_row = 0; mb_row < mb_rows_; ++mb_row) {
     const int mb_index_base = mb_row * mb_cols_;
     const int offset_base = (mb_row << 4) * stride_y_;
     const uint8_t* mb_src_base = y_src + offset_base;
     uint8_t* mb_dst_base = y_dst + offset_base;
     uint8_t* mb_dst_prev_base = y_dst_prev + offset_base;
     for (int mb_col = 0; mb_col < mb_cols_; ++mb_col) {
       const int mb_index = mb_index_base + mb_col;
@@ skipping 79 matching lines @@
   denoised_frame->set_render_time_ms(frame.render_time_ms());
 
 #if DISPLAY || DISPLAYNEON
   // Show rectangular region
   ShowRect(filter_, moving_edge_, moving_object_, x_density_, y_density_, u_src,
            v_src, u_dst, v_dst, mb_rows_, mb_cols_, stride_u_, stride_v_);
 #endif
 }
 
 }  // namespace webrtc