diff --git a/rtc_base/experiments/rate_control_settings.cc b/rtc_base/experiments/rate_control_settings.cc
index 81089b83ff..018ef1a9ff 100644
--- a/rtc_base/experiments/rate_control_settings.cc
+++ b/rtc_base/experiments/rate_control_settings.cc
@@ -73,8 +73,11 @@ RateControlSettings::RateControlSettings(
       congestion_window_pushback_(
           "cwnd_pushback",
           MaybeReadCongestionWindowPushbackExperimentParameter(
-              key_value_config)) {
-  ParseFieldTrial({&congestion_window_, &congestion_window_pushback_},
+              key_value_config)),
+      pacing_factor_("pacing_factor"),
+      alr_probing_("alr_probing", false) {
+  ParseFieldTrial({&congestion_window_, &congestion_window_pushback_,
+                   &pacing_factor_, &alr_probing_},
                   key_value_config->Lookup("WebRTC-VideoRateControl"));
 }
 
@@ -111,4 +114,12 @@ uint32_t RateControlSettings::CongestionWindowMinPushbackTargetBitrateBps()
       kDefaultMinPushbackTargetBitrateBps);
 }
 
+absl::optional<double> RateControlSettings::GetPacingFactor() const {
+  return pacing_factor_.GetOptional();
+}
+
+bool RateControlSettings::UseAlrProbing() const {
+  return alr_probing_.Get();
+}
+
 }  // namespace webrtc
diff --git a/rtc_base/experiments/rate_control_settings.h b/rtc_base/experiments/rate_control_settings.h
index 0afda877b6..b4a3755268 100644
--- a/rtc_base/experiments/rate_control_settings.h
+++ b/rtc_base/experiments/rate_control_settings.h
@@ -14,6 +14,7 @@
 #include "absl/types/optional.h"
 #include "api/transport/webrtc_key_value_config.h"
 #include "rtc_base/experiments/field_trial_parser.h"
+#include "rtc_base/experiments/field_trial_units.h"
 
 namespace webrtc {
 
@@ -34,12 +35,17 @@ class RateControlSettings final {
   bool UseCongestionWindowPushback() const;
   uint32_t CongestionWindowMinPushbackTargetBitrateBps() const;
 
+  absl::optional<double> GetPacingFactor() const;
+  bool UseAlrProbing() const;
+
  private:
   explicit RateControlSettings(
       const WebRtcKeyValueConfig* const key_value_config);
 
   FieldTrialOptional<int> congestion_window_;
   FieldTrialOptional<int> congestion_window_pushback_;
+  FieldTrialOptional<double> pacing_factor_;
+  FieldTrialParameter<bool> alr_probing_;
 };
 
 }  // namespace webrtc
diff --git a/video/BUILD.gn b/video/BUILD.gn
index 1b3e698ea6..a56e506f7f 100644
--- a/video/BUILD.gn
+++ b/video/BUILD.gn
@@ -86,6 +86,7 @@ rtc_static_library("video") {
     "../rtc_base:stringutils",
     "../rtc_base/experiments:alr_experiment",
     "../rtc_base/experiments:quality_scaling_experiment",
+    "../rtc_base/experiments:rate_control_settings",
     "../rtc_base/system:fallthrough",
     "../rtc_base/task_utils:repeating_task",
     "../system_wrappers:field_trial",
diff --git a/video/video_send_stream_impl.cc b/video/video_send_stream_impl.cc
index f455d18de2..2b6dbb5e11 100644
--- a/video/video_send_stream_impl.cc
+++ b/video/video_send_stream_impl.cc
@@ -25,6 +25,7 @@
 #include "rtc_base/atomic_ops.h"
 #include "rtc_base/checks.h"
 #include "rtc_base/experiments/alr_experiment.h"
+#include "rtc_base/experiments/rate_control_settings.h"
 #include "rtc_base/logging.h"
 #include "rtc_base/numerics/safe_conversions.h"
 #include "rtc_base/scoped_ref_ptr.h"
@@ -204,6 +205,7 @@ VideoSendStreamImpl::VideoSendStreamImpl(
       stats_proxy_(stats_proxy),
       config_(config),
       worker_queue_(worker_queue),
+      timed_out_(false),
       call_stats_(call_stats),
       transport_(transport),
       bitrate_allocator_(bitrate_allocator),
@@ -278,9 +280,16 @@ VideoSendStreamImpl::VideoSendStreamImpl(
       configured_pacing_factor_ = alr_settings->pacing_factor;
       transport->SetQueueTimeLimit(alr_settings->max_paced_queue_time);
     } else {
-      transport->EnablePeriodicAlrProbing(false);
-      transport->SetPacingFactor(pacing_config_.pacing_factor);
-      configured_pacing_factor_ = pacing_config_.pacing_factor;
+      RateControlSettings rate_control_settings =
+          RateControlSettings::ParseFromFieldTrials();
+
+      transport->EnablePeriodicAlrProbing(
+          rate_control_settings.UseAlrProbing());
+      const double pacing_factor =
+          rate_control_settings.GetPacingFactor().value_or(
+              pacing_config_.pacing_factor);
+      transport->SetPacingFactor(pacing_factor);
+      configured_pacing_factor_ = pacing_factor;
       transport->SetQueueTimeLimit(pacing_config_.max_pacing_delay.Get().ms());
     }
   }