diff --git a/third_party/libwebrtc/README.mozilla.last-vendor b/third_party/libwebrtc/README.mozilla.last-vendor
index 2911c1c5c377..e31648df135d 100644
--- a/third_party/libwebrtc/README.mozilla.last-vendor
+++ b/third_party/libwebrtc/README.mozilla.last-vendor
@@ -1,4 +1,4 @@
 # ./mach python dom/media/webrtc/third_party_build/vendor-libwebrtc.py --from-local /home/mfroman/mozilla/elm/.moz-fast-forward/moz-libwebrtc --commit mozpatches libwebrtc
-libwebrtc updated from /home/mfroman/mozilla/elm/.moz-fast-forward/moz-libwebrtc commit mozpatches on 2025-03-07T22:26:04.421669+00:00.
+libwebrtc updated from /home/mfroman/mozilla/elm/.moz-fast-forward/moz-libwebrtc commit mozpatches on 2025-03-07T22:26:58.460825+00:00.
 # base of lastest vendoring
-8e14ab0310
+9494d02c03
diff --git a/third_party/libwebrtc/modules/video_coding/utility/quality_scaler.h b/third_party/libwebrtc/modules/video_coding/utility/quality_scaler.h
index eeb878a0c693..9b6aec670b12 100644
--- a/third_party/libwebrtc/modules/video_coding/utility/quality_scaler.h
+++ b/third_party/libwebrtc/modules/video_coding/utility/quality_scaler.h
@@ -88,10 +88,9 @@ class QualityScaler {
   VideoEncoder::QpThresholds thresholds_ RTC_GUARDED_BY(&task_checker_);
   const int64_t sampling_period_ms_;
   bool fast_rampup_ RTC_GUARDED_BY(&task_checker_);
-  rtc::MovingAverage average_qp_ RTC_GUARDED_BY(&task_checker_);
-  rtc::MovingAverage framedrop_percent_media_opt_
-      RTC_GUARDED_BY(&task_checker_);
-  rtc::MovingAverage framedrop_percent_all_ RTC_GUARDED_BY(&task_checker_);
+  MovingAverage average_qp_ RTC_GUARDED_BY(&task_checker_);
+  MovingAverage framedrop_percent_media_opt_ RTC_GUARDED_BY(&task_checker_);
+  MovingAverage framedrop_percent_all_ RTC_GUARDED_BY(&task_checker_);
 
   // Used by QualityScalingExperiment.
   const bool experiment_enabled_;
diff --git a/third_party/libwebrtc/rtc_base/numerics/moving_average.cc b/third_party/libwebrtc/rtc_base/numerics/moving_average.cc
index f91926f59721..17c5d9cd9afa 100644
--- a/third_party/libwebrtc/rtc_base/numerics/moving_average.cc
+++ b/third_party/libwebrtc/rtc_base/numerics/moving_average.cc
@@ -17,7 +17,7 @@
 
 #include "rtc_base/checks.h"
 
-namespace rtc {
+namespace webrtc {
 
 MovingAverage::MovingAverage(size_t window_size) : history_(window_size, 0) {
   // Limit window size to avoid overflow.
@@ -60,4 +60,4 @@ void MovingAverage::Reset() {
 size_t MovingAverage::Size() const {
   return std::min(count_, history_.size());
 }
-}  // namespace rtc
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/rtc_base/numerics/moving_average.h b/third_party/libwebrtc/rtc_base/numerics/moving_average.h
index f9aa8ee02115..7d9a70463038 100644
--- a/third_party/libwebrtc/rtc_base/numerics/moving_average.h
+++ b/third_party/libwebrtc/rtc_base/numerics/moving_average.h
@@ -17,7 +17,7 @@
 #include <optional>
 #include <vector>
 
-namespace rtc {
+namespace webrtc {
 
 // Calculates average over fixed size window. If there are less than window
 // size elements, calculates average of all inserted so far elements.
@@ -61,5 +61,11 @@ class MovingAverage {
   std::vector<int> history_;
 };
 
+}  //  namespace webrtc
+
+// Re-export symbols from the webrtc namespace for backwards compatibility.
+// TODO(bugs.webrtc.org/4222596): Remove once all references are updated.
+namespace rtc {
+using ::webrtc::MovingAverage;
 }  // namespace rtc
 #endif  // RTC_BASE_NUMERICS_MOVING_AVERAGE_H_
diff --git a/third_party/libwebrtc/rtc_base/numerics/moving_average_unittest.cc b/third_party/libwebrtc/rtc_base/numerics/moving_average_unittest.cc
index 163a7785d284..5b691e7476b2 100644
--- a/third_party/libwebrtc/rtc_base/numerics/moving_average_unittest.cc
+++ b/third_party/libwebrtc/rtc_base/numerics/moving_average_unittest.cc
@@ -17,21 +17,21 @@
 namespace test {
 
 TEST(MovingAverageTest, EmptyAverage) {
-  rtc::MovingAverage moving_average(1);
+  webrtc::MovingAverage moving_average(1);
   EXPECT_EQ(0u, moving_average.Size());
   EXPECT_EQ(std::nullopt, moving_average.GetAverageRoundedDown());
 }
 
 // Test single value.
 TEST(MovingAverageTest, OneElement) {
-  rtc::MovingAverage moving_average(1);
+  webrtc::MovingAverage moving_average(1);
   moving_average.AddSample(3);
   EXPECT_EQ(1u, moving_average.Size());
   EXPECT_EQ(3, *moving_average.GetAverageRoundedDown());
 }
 
 TEST(MovingAverageTest, GetAverage) {
-  rtc::MovingAverage moving_average(1024);
+  webrtc::MovingAverage moving_average(1024);
   moving_average.AddSample(1);
   moving_average.AddSample(1);
   moving_average.AddSample(3);
@@ -41,7 +41,7 @@ TEST(MovingAverageTest, GetAverage) {
 }
 
 TEST(MovingAverageTest, GetAverageRoundedDownRounds) {
-  rtc::MovingAverage moving_average(1024);
+  webrtc::MovingAverage moving_average(1024);
   moving_average.AddSample(1);
   moving_average.AddSample(2);
   moving_average.AddSample(2);
@@ -50,7 +50,7 @@ TEST(MovingAverageTest, GetAverageRoundedDownRounds) {
 }
 
 TEST(MovingAverageTest, GetAverageRoundedToClosestRounds) {
-  rtc::MovingAverage moving_average(1024);
+  webrtc::MovingAverage moving_average(1024);
   moving_average.AddSample(1);
   moving_average.AddSample(2);
   moving_average.AddSample(2);
@@ -59,7 +59,7 @@ TEST(MovingAverageTest, GetAverageRoundedToClosestRounds) {
 }
 
 TEST(MovingAverageTest, Reset) {
-  rtc::MovingAverage moving_average(5);
+  webrtc::MovingAverage moving_average(5);
   moving_average.AddSample(1);
   EXPECT_EQ(1, *moving_average.GetAverageRoundedDown());
   EXPECT_EQ(1, *moving_average.GetAverageRoundedToClosest());
@@ -73,7 +73,7 @@ TEST(MovingAverageTest, Reset) {
 }
 
 TEST(MovingAverageTest, ManySamples) {
-  rtc::MovingAverage moving_average(10);
+  webrtc::MovingAverage moving_average(10);
   for (int i = 1; i < 11; i++) {
     moving_average.AddSample(i);
   }
diff --git a/third_party/libwebrtc/video/video_quality_observer2.h b/third_party/libwebrtc/video/video_quality_observer2.h
index 87dff9b434c9..e9b66c5dfdb5 100644
--- a/third_party/libwebrtc/video/video_quality_observer2.h
+++ b/third_party/libwebrtc/video/video_quality_observer2.h
@@ -72,7 +72,7 @@ class VideoQualityObserver {
   bool is_last_frame_blocky_;
   // Decoded timestamp of the last delayed frame.
   int64_t last_unfreeze_time_ms_;
-  rtc::MovingAverage render_interframe_delays_;
+  MovingAverage render_interframe_delays_;
   double sum_squared_interframe_delays_secs_;
   // An inter-frame delay is counted as a freeze if it's significantly longer
   // than average inter-frame delay.