diff --git a/api/video_codecs/scalability_mode.h b/api/video_codecs/scalability_mode.h
index 262e7ce..a33b9e4 100644
--- a/api/video_codecs/scalability_mode.h
+++ b/api/video_codecs/scalability_mode.h
@@ -44,6 +44,7 @@
   kL3T3h,
   kL3T3_KEY,
   kS2T1,
+  kS2T3,
   kS3T3,
 };
 
diff --git a/modules/video_coding/codecs/vp9/libvpx_vp9_encoder.cc b/modules/video_coding/codecs/vp9/libvpx_vp9_encoder.cc
index b252fb7..35675f5 100644
--- a/modules/video_coding/codecs/vp9/libvpx_vp9_encoder.cc
+++ b/modules/video_coding/codecs/vp9/libvpx_vp9_encoder.cc
@@ -466,7 +466,7 @@
   }
   for (int tid = 0; tid < num_temporal_layers_; ++tid) {
     config_->layer_target_bitrate[sid * num_temporal_layers_ + tid] =
-        current_bitrate_allocation_.GetBitrate(sid, tid) / 1000;
+        current_bitrate_allocation_.GetTemporalLayerSum(sid, tid) / 1000;
   }
   config_->ss_target_bitrate[sid] =
       current_bitrate_allocation_.GetSpatialLayerSum(sid) / 1000;
diff --git a/modules/video_coding/svc/BUILD.gn b/modules/video_coding/svc/BUILD.gn
index d82f316..b8ce91d 100644
--- a/modules/video_coding/svc/BUILD.gn
+++ b/modules/video_coding/svc/BUILD.gn
@@ -112,6 +112,7 @@
       "../../../api/video:video_frame_type",
       "../../../api/video_codecs:scalability_mode",
       "../../../common_video/generic_frame_descriptor",
+      "../../../rtc_base:stringutils",
       "../../../test:test_support",
     ]
     absl_deps = [
diff --git a/modules/video_coding/svc/create_scalability_structure.cc b/modules/video_coding/svc/create_scalability_structure.cc
index dfbfb14..d5a85e0 100644
--- a/modules/video_coding/svc/create_scalability_structure.cc
+++ b/modules/video_coding/svc/create_scalability_structure.cc
@@ -106,6 +106,13 @@
     {1, 1},
     {2, 1}};
 
+constexpr ScalableVideoController::StreamLayersConfig kConfigS2T3 = {
+    /*num_spatial_layers=*/2,
+    /*num_temporal_layers=*/3,
+    /*uses_reference_scaling=*/false,
+    {1, 1},
+    {2, 1}};
+
 constexpr ScalableVideoController::StreamLayersConfig kConfigS3T3 = {
     /*num_spatial_layers=*/3,
     /*num_temporal_layers=*/3,
@@ -127,6 +134,7 @@
      kConfigL2T2},
     {ScalabilityMode::kL2T2_KEY_SHIFT, Create<ScalabilityStructureL2T2KeyShift>,
      kConfigL2T2},
+    {ScalabilityMode::kL2T3, Create<ScalabilityStructureL2T3>, kConfigL2T3},
     {ScalabilityMode::kL2T3_KEY, Create<ScalabilityStructureL2T3Key>,
      kConfigL2T3},
     {ScalabilityMode::kL3T1, Create<ScalabilityStructureL3T1>, kConfigL3T1},
@@ -134,6 +142,7 @@
     {ScalabilityMode::kL3T3_KEY, Create<ScalabilityStructureL3T3Key>,
      kConfigL3T3},
     {ScalabilityMode::kS2T1, Create<ScalabilityStructureS2T1>, kConfigS2T1},
+    {ScalabilityMode::kS2T3, Create<ScalabilityStructureS2T3>, kConfigS2T3},
     {ScalabilityMode::kS3T3, Create<ScalabilityStructureS3T3>, kConfigS3T3},
 };
 
diff --git a/modules/video_coding/svc/scalability_mode_util.cc b/modules/video_coding/svc/scalability_mode_util.cc
index d0a56af..510c9fd3 100644
--- a/modules/video_coding/svc/scalability_mode_util.cc
+++ b/modules/video_coding/svc/scalability_mode_util.cc
@@ -75,6 +75,8 @@
 
   if (mode_string == "S2T1")
     return ScalabilityMode::kS2T1;
+  if (mode_string == "S2T3")
+    return ScalabilityMode::kS2T3;
   if (mode_string == "S3T3")
     return ScalabilityMode::kS3T3;
 
@@ -133,6 +135,8 @@
       return "L3T3_KEY";
     case ScalabilityMode::kS2T1:
       return "S2T1";
+    case ScalabilityMode::kS2T3:
+      return "S2T3";
     case ScalabilityMode::kS3T3:
       return "S3T3";
   }
@@ -179,6 +183,7 @@
     case ScalabilityMode::kL3T3_KEY:
       return InterLayerPredMode::kOnKeyPic;
     case ScalabilityMode::kS2T1:
+    case ScalabilityMode::kS2T3:
     case ScalabilityMode::kS3T3:
       return InterLayerPredMode::kOff;
   }
@@ -215,6 +220,7 @@
     case ScalabilityMode::kL3T3_KEY:
       return 3;
     case ScalabilityMode::kS2T1:
+    case ScalabilityMode::kS2T3:
       return 2;
     case ScalabilityMode::kS3T3:
       return 3;
@@ -259,6 +265,7 @@
       return 3;
     case ScalabilityMode::kS2T1:
       return 1;
+    case ScalabilityMode::kS2T3:
     case ScalabilityMode::kS3T3:
       return 3;
   }
diff --git a/modules/video_coding/svc/scalability_structure_full_svc.cc b/modules/video_coding/svc/scalability_structure_full_svc.cc
index 8920592..d73f167 100644
--- a/modules/video_coding/svc/scalability_structure_full_svc.cc
+++ b/modules/video_coding/svc/scalability_structure_full_svc.cc
@@ -353,6 +353,26 @@
   return structure;
 }
 
+FrameDependencyStructure ScalabilityStructureL2T3::DependencyStructure() const {
+  FrameDependencyStructure structure;
+  structure.num_decode_targets = 6;
+  structure.num_chains = 2;
+  structure.decode_target_protected_by_chain = {0, 0, 0, 1, 1, 1};
+  auto& t = structure.templates;
+  t.resize(10);
+  t[1].S(0).T(0).Dtis("SSSSSS").ChainDiffs({0, 0});
+  t[6].S(1).T(0).Dtis("---SSS").ChainDiffs({1, 1}).FrameDiffs({1});
+  t[3].S(0).T(2).Dtis("--D--R").ChainDiffs({2, 1}).FrameDiffs({2});
+  t[8].S(1).T(2).Dtis("-----D").ChainDiffs({3, 2}).FrameDiffs({2, 1});
+  t[2].S(0).T(1).Dtis("-DS-RR").ChainDiffs({4, 3}).FrameDiffs({4});
+  t[7].S(1).T(1).Dtis("----DS").ChainDiffs({5, 4}).FrameDiffs({4, 1});
+  t[4].S(0).T(2).Dtis("--D--R").ChainDiffs({6, 5}).FrameDiffs({2});
+  t[9].S(1).T(2).Dtis("-----D").ChainDiffs({7, 6}).FrameDiffs({2, 1});
+  t[0].S(0).T(0).Dtis("SSSRRR").ChainDiffs({8, 7}).FrameDiffs({8});
+  t[5].S(1).T(0).Dtis("---SSS").ChainDiffs({1, 1}).FrameDiffs({8, 1});
+  return structure;
+}
+
 FrameDependencyStructure ScalabilityStructureL3T1::DependencyStructure() const {
   FrameDependencyStructure structure;
   structure.num_decode_targets = 3;
diff --git a/modules/video_coding/svc/scalability_structure_full_svc.h b/modules/video_coding/svc/scalability_structure_full_svc.h
index a3cad0a..03141ff 100644
--- a/modules/video_coding/svc/scalability_structure_full_svc.h
+++ b/modules/video_coding/svc/scalability_structure_full_svc.h
@@ -133,6 +133,23 @@
   FrameDependencyStructure DependencyStructure() const override;
 };
 
+// S1T2      4    ,8
+// S1T1    / |  6' |
+// S1T0   2--+-'+--+-...
+//        |  |  |  |
+// S0T2   |  3  | ,7
+// S0T1   | /   5'
+// S0T0   1----'-----...
+// Time-> 0  1  2  3
+class ScalabilityStructureL2T3 : public ScalabilityStructureFullSvc {
+ public:
+  explicit ScalabilityStructureL2T3(ScalingFactor resolution_factor = {})
+      : ScalabilityStructureFullSvc(2, 3, resolution_factor) {}
+  ~ScalabilityStructureL2T3() override = default;
+
+  FrameDependencyStructure DependencyStructure() const override;
+};
+
 // S2     0-0-0-
 //        | | |
 // S1     0-0-0-...
diff --git a/modules/video_coding/svc/scalability_structure_simulcast.cc b/modules/video_coding/svc/scalability_structure_simulcast.cc
index e5fa4c4..0a06e9e 100644
--- a/modules/video_coding/svc/scalability_structure_simulcast.cc
+++ b/modules/video_coding/svc/scalability_structure_simulcast.cc
@@ -242,6 +242,26 @@
   return structure;
 }
 
+FrameDependencyStructure ScalabilityStructureS2T3::DependencyStructure() const {
+  FrameDependencyStructure structure;
+  structure.num_decode_targets = 6;
+  structure.num_chains = 2;
+  structure.decode_target_protected_by_chain = {0, 0, 0, 1, 1, 1};
+  auto& t = structure.templates;
+  t.resize(10);
+  t[1].S(0).T(0).Dtis("SSS---").ChainDiffs({0, 0});
+  t[6].S(1).T(0).Dtis("---SSS").ChainDiffs({1, 0});
+  t[3].S(0).T(2).Dtis("--D---").ChainDiffs({2, 1}).FrameDiffs({2});
+  t[8].S(1).T(2).Dtis("-----D").ChainDiffs({3, 2}).FrameDiffs({2});
+  t[2].S(0).T(1).Dtis("-DS---").ChainDiffs({4, 3}).FrameDiffs({4});
+  t[7].S(1).T(1).Dtis("----DS").ChainDiffs({5, 4}).FrameDiffs({4});
+  t[4].S(0).T(2).Dtis("--D---").ChainDiffs({6, 5}).FrameDiffs({2});
+  t[9].S(1).T(2).Dtis("-----D").ChainDiffs({7, 6}).FrameDiffs({2});
+  t[0].S(0).T(0).Dtis("SSS---").ChainDiffs({8, 7}).FrameDiffs({8});
+  t[5].S(1).T(0).Dtis("---SSS").ChainDiffs({1, 8}).FrameDiffs({8});
+  return structure;
+}
+
 FrameDependencyStructure ScalabilityStructureS3T3::DependencyStructure() const {
   FrameDependencyStructure structure;
   structure.num_decode_targets = 9;
diff --git a/modules/video_coding/svc/scalability_structure_simulcast.h b/modules/video_coding/svc/scalability_structure_simulcast.h
index 7b57df2..53f491c 100644
--- a/modules/video_coding/svc/scalability_structure_simulcast.h
+++ b/modules/video_coding/svc/scalability_structure_simulcast.h
@@ -76,6 +76,26 @@
   FrameDependencyStructure DependencyStructure() const override;
 };
 
+// S1T2       3   7
+//            |  /
+// S1T1       / 5
+//           |_/
+// S1T0     1-------9...
+//
+// S0T2       2   6
+//            |  /
+// S0T1       / 4
+//           |_/
+// S0T0     0-------8...
+// Time->   0 1 2 3 4
+class ScalabilityStructureS2T3 : public ScalabilityStructureSimulcast {
+ public:
+  ScalabilityStructureS2T3() : ScalabilityStructureSimulcast(2, 3) {}
+  ~ScalabilityStructureS2T3() override = default;
+
+  FrameDependencyStructure DependencyStructure() const override;
+};
+
 class ScalabilityStructureS3T3 : public ScalabilityStructureSimulcast {
  public:
   ScalabilityStructureS3T3() : ScalabilityStructureSimulcast(3, 3) {}
diff --git a/modules/video_coding/svc/scalability_structure_unittest.cc b/modules/video_coding/svc/scalability_structure_unittest.cc
index ffc085d..86d7cc0 100644
--- a/modules/video_coding/svc/scalability_structure_unittest.cc
+++ b/modules/video_coding/svc/scalability_structure_unittest.cc
@@ -22,6 +22,7 @@
 #include "modules/video_coding/svc/scalability_mode_util.h"
 #include "modules/video_coding/svc/scalability_structure_test_helpers.h"
 #include "modules/video_coding/svc/scalable_video_controller.h"
+#include "rtc_base/strings/string_builder.h"
 #include "test/gmock.h"
 #include "test/gtest.h"
 
@@ -43,6 +44,41 @@
 using ::testing::TestWithParam;
 using ::testing::Values;
 
+std::string FrameDependencyTemplateToString(const FrameDependencyTemplate& t) {
+  rtc::StringBuilder sb;
+  sb << "S" << t.spatial_id << "T" << t.temporal_id;
+  sb << ": dtis = ";
+  for (const auto dtis : t.decode_target_indications) {
+    switch (dtis) {
+      case DecodeTargetIndication::kNotPresent:
+        sb << "-";
+        break;
+      case DecodeTargetIndication::kDiscardable:
+        sb << "D";
+        break;
+      case DecodeTargetIndication::kSwitch:
+        sb << "S";
+        break;
+      case DecodeTargetIndication::kRequired:
+        sb << "R";
+        break;
+      default:
+        sb << "?";
+        break;
+    }
+  }
+  sb << ", frame diffs = { ";
+  for (int d : t.frame_diffs) {
+    sb << d << ", ";
+  }
+  sb << "}, chain diffs = { ";
+  for (int d : t.chain_diffs) {
+    sb << d << ", ";
+  }
+  sb << "}";
+  return sb.Release();
+}
+
 struct SvcTestParam {
   friend std::ostream& operator<<(std::ostream& os, const SvcTestParam& param) {
     return os << param.name;
@@ -176,7 +212,8 @@
           .GenerateFrames(GetParam().num_temporal_units);
   for (size_t frame_id = 0; frame_id < frame_infos.size(); ++frame_id) {
     EXPECT_THAT(structure.templates, Contains(frame_infos[frame_id]))
-        << " for frame " << frame_id;
+        << " for frame " << frame_id << ", Expected "
+        << FrameDependencyTemplateToString(frame_infos[frame_id]);
   }
 }
 
@@ -336,10 +373,12 @@
            SvcTestParam{"L3T1", /*num_temporal_units=*/3},
            SvcTestParam{"L3T3", /*num_temporal_units=*/8},
            SvcTestParam{"S2T1", /*num_temporal_units=*/3},
+           SvcTestParam{"S2T3", /*num_temporal_units=*/8},
            SvcTestParam{"S3T3", /*num_temporal_units=*/8},
            SvcTestParam{"L2T2", /*num_temporal_units=*/4},
            SvcTestParam{"L2T2_KEY", /*num_temporal_units=*/4},
            SvcTestParam{"L2T2_KEY_SHIFT", /*num_temporal_units=*/4},
+           SvcTestParam{"L2T3", /*num_temporal_units=*/8},
            SvcTestParam{"L2T3_KEY", /*num_temporal_units=*/8},
            SvcTestParam{"L3T3_KEY", /*num_temporal_units=*/8}),
     [](const testing::TestParamInfo<SvcTestParam>& info) {
diff --git a/pc/test/svc_e2e_tests.cc b/pc/test/svc_e2e_tests.cc
index 30a0ca4..993d18b 100644
--- a/pc/test/svc_e2e_tests.cc
+++ b/pc/test/svc_e2e_tests.cc
@@ -295,6 +295,7 @@
            SvcTestParameters{cricket::kVp9CodecName, "L2T2", 2, 2},
            SvcTestParameters{cricket::kVp9CodecName, "L2T2_KEY", 2, 2},
            SvcTestParameters{cricket::kVp9CodecName, "L2T2_KEY_SHIFT", 2, 2},
+           SvcTestParameters{cricket::kVp9CodecName, "L2T3", 2, 3},
            SvcTestParameters{cricket::kVp9CodecName, "L2T3_KEY", 2, 3},
            SvcTestParameters{cricket::kVp9CodecName, "L3T1", 3, 1},
            SvcTestParameters{cricket::kVp9CodecName, "L3T3", 3, 3}),