diff --git a/webrtc/tools/event_log_visualizer/analyzer.cc b/webrtc/tools/event_log_visualizer/analyzer.cc
index a45ec770f0..2c340127de 100644
--- a/webrtc/tools/event_log_visualizer/analyzer.cc
+++ b/webrtc/tools/event_log_visualizer/analyzer.cc
@@ -555,12 +555,11 @@ void EventLogAnalyzer::CreateAccumulatedPacketsTimeSeries(
 
     TimeSeries time_series;
     time_series.label = label_prefix + " " + GetStreamName(stream_id);
-    time_series.style = LINE_GRAPH;
+    time_series.style = LINE_STEP_GRAPH;
 
     for (size_t i = 0; i < packet_stream.size(); i++) {
       float x = static_cast<float>(packet_stream[i].timestamp - begin_time_) /
                 1000000;
-      time_series.points.emplace_back(x, i);
       time_series.points.emplace_back(x, i + 1);
     }
 
@@ -893,9 +892,8 @@ void EventLogAnalyzer::CreateTotalBitrateGraph(
       plot->series_list_.back().points.emplace_back(x, y);
     }
     plot->series_list_.back().label = "Loss-based estimate";
-    plot->series_list_.back().style = LINE_GRAPH;
+    plot->series_list_.back().style = LINE_STEP_GRAPH;
   }
-  plot->series_list_.back().style = LINE_GRAPH;
   plot->SetXAxis(0, call_duration_s_, "Time (s)", kLeftMargin, kRightMargin);
   plot->SetSuggestedYAxis(0, 1, "Bitrate (kbps)", kBottomMargin, kTopMargin);
   if (desired_direction == webrtc::PacketDirection::kIncomingPacket) {
diff --git a/webrtc/tools/event_log_visualizer/chart.proto b/webrtc/tools/event_log_visualizer/chart.proto
index 685b4bd762..e005391c9f 100644
--- a/webrtc/tools/event_log_visualizer/chart.proto
+++ b/webrtc/tools/event_log_visualizer/chart.proto
@@ -9,6 +9,7 @@ message ChartStyle {
     UNDEFINED = 0;
     LINE_CHART = 1;
     BAR_CHART = 2;
+    LINE_STEP_CHART = 3;
   }
 }
 
@@ -33,4 +34,4 @@ message Chart {
 
 message ChartCollection {
   repeated Chart charts = 1;
-}
\ No newline at end of file
+}
diff --git a/webrtc/tools/event_log_visualizer/plot_base.h b/webrtc/tools/event_log_visualizer/plot_base.h
index 5546271132..e2bec2df78 100644
--- a/webrtc/tools/event_log_visualizer/plot_base.h
+++ b/webrtc/tools/event_log_visualizer/plot_base.h
@@ -18,7 +18,7 @@
 namespace webrtc {
 namespace plotting {
 
-enum PlotStyle { LINE_GRAPH, LINE_DOT_GRAPH, BAR_GRAPH };
+enum PlotStyle { LINE_GRAPH, LINE_DOT_GRAPH, BAR_GRAPH, LINE_STEP_GRAPH };
 
 struct TimeSeriesPoint {
   TimeSeriesPoint(float x, float y) : x(x), y(y) {}
diff --git a/webrtc/tools/event_log_visualizer/plot_protobuf.cc b/webrtc/tools/event_log_visualizer/plot_protobuf.cc
index e6e1adc703..6e4558579b 100644
--- a/webrtc/tools/event_log_visualizer/plot_protobuf.cc
+++ b/webrtc/tools/event_log_visualizer/plot_protobuf.cc
@@ -38,6 +38,8 @@ void ProtobufPlot::ExportProtobuf(webrtc::analytics::Chart* chart) {
     } else if (series_list_[i].style == LINE_DOT_GRAPH) {
       data_set->set_style(webrtc::analytics::ChartStyle::LINE_CHART);
       data_set->set_highlight_points(true);
+    } else if (series_list_[i].style == LINE_STEP_GRAPH) {
+      data_set->set_style(webrtc::analytics::ChartStyle::LINE_STEP_CHART);
     } else {
       data_set->set_style(webrtc::analytics::ChartStyle::UNDEFINED);
     }
diff --git a/webrtc/tools/event_log_visualizer/plot_python.cc b/webrtc/tools/event_log_visualizer/plot_python.cc
index d4583444ef..c91efe32c7 100644
--- a/webrtc/tools/event_log_visualizer/plot_python.cc
+++ b/webrtc/tools/event_log_visualizer/plot_python.cc
@@ -65,6 +65,16 @@ void PythonPlot::Draw() {
             "plt.plot(x%zu, y%zu, color=rgb_colors[%zu], label=\'%s\', "
             "marker='.')\n",
             i, i, i, series_list_[i].label.c_str());
+      } else if (series_list_[i].style == LINE_STEP_GRAPH) {
+        // Draw lines from (x[0],y[0]) to (x[1],y[0]) to (x[1],y[1]) and so on
+        // to illustrate the "steps". This can be expressed by duplicating all
+        // elements except the first in x and the last in y.
+        printf("x%zu = [v for dup in x%zu for v in [dup, dup]]\n", i, i);
+        printf("y%zu = [v for dup in y%zu for v in [dup, dup]]\n", i, i);
+        printf(
+            "plt.plot(x%zu[1:], y%zu[:-1], color=rgb_colors[%zu], "
+            "label=\'%s\')\n",
+            i, i, i, series_list_[i].label.c_str());
       } else {
         printf("raise Exception(\"Unknown graph type\")\n");
       }