diff --git a/call/video_send_stream.h b/call/video_send_stream.h
index 5daec19449..8f550daa9c 100644
--- a/call/video_send_stream.h
+++ b/call/video_send_stream.h
@@ -68,6 +68,8 @@ class VideoSendStream {
     int avg_encode_time_ms = 0;
     int encode_usage_percent = 0;
     uint32_t frames_encoded = 0;
+    // https://w3c.github.io/webrtc-stats/#dom-rtcoutboundrtpstreamstats-totalencodetime
+    uint64_t total_encode_time_ms = 0;
     uint32_t frames_dropped_by_capturer = 0;
     uint32_t frames_dropped_by_encoder_queue = 0;
     uint32_t frames_dropped_by_rate_limiter = 0;
diff --git a/video/end_to_end_tests/stats_tests.cc b/video/end_to_end_tests/stats_tests.cc
index 3717c7663b..3201e19bb2 100644
--- a/video/end_to_end_tests/stats_tests.cc
+++ b/video/end_to_end_tests/stats_tests.cc
@@ -161,7 +161,8 @@ TEST_F(StatsEndToEndTest, GetStats) {
           stats.substreams.size() == expected_num_streams;
 
       send_stats_filled_["CpuOveruseMetrics"] |=
-          stats.avg_encode_time_ms != 0 && stats.encode_usage_percent != 0;
+          stats.avg_encode_time_ms != 0 && stats.encode_usage_percent != 0 &&
+          stats.total_encode_time_ms != 0;
 
       send_stats_filled_["EncoderImplementationName"] |=
           stats.encoder_implementation_name ==
diff --git a/video/send_statistics_proxy.cc b/video/send_statistics_proxy.cc
index 20e54496f9..0b165374e9 100644
--- a/video/send_statistics_proxy.cc
+++ b/video/send_statistics_proxy.cc
@@ -674,10 +674,12 @@ void SendStatisticsProxy::OnEncoderReconfigured(
 
 void SendStatisticsProxy::OnEncodedFrameTimeMeasured(int encode_time_ms,
                                                      int encode_usage_percent) {
+  RTC_DCHECK_GE(encode_time_ms, 0);
   rtc::CritScope lock(&crit_);
   uma_container_->encode_time_counter_.Add(encode_time_ms);
   encode_time_.Apply(1.0f, encode_time_ms);
   stats_.avg_encode_time_ms = round(encode_time_.filtered());
+  stats_.total_encode_time_ms += encode_time_ms;
   stats_.encode_usage_percent = encode_usage_percent;
 }
 
diff --git a/video/send_statistics_proxy_unittest.cc b/video/send_statistics_proxy_unittest.cc
index 1e367957be..ded7fedc5e 100644
--- a/video/send_statistics_proxy_unittest.cc
+++ b/video/send_statistics_proxy_unittest.cc
@@ -318,6 +318,15 @@ TEST_F(SendStatisticsProxyTest, OnEncodedFrameTimeMeasured) {
   EXPECT_EQ(encode_usage_percent, stats.encode_usage_percent);
 }
 
+TEST_F(SendStatisticsProxyTest, TotalEncodeTimeIncreasesPerFrameMeasured) {
+  const int kEncodeUsagePercent = 0;  // Don't care for this test.
+  EXPECT_EQ(0u, statistics_proxy_->GetStats().total_encode_time_ms);
+  statistics_proxy_->OnEncodedFrameTimeMeasured(10, kEncodeUsagePercent);
+  EXPECT_EQ(10u, statistics_proxy_->GetStats().total_encode_time_ms);
+  statistics_proxy_->OnEncodedFrameTimeMeasured(20, kEncodeUsagePercent);
+  EXPECT_EQ(30u, statistics_proxy_->GetStats().total_encode_time_ms);
+}
+
 TEST_F(SendStatisticsProxyTest, OnSendEncodedImageIncreasesFramesEncoded) {
   EncodedImage encoded_image;
   CodecSpecificInfo codec_info;