diff --git a/test/pc/e2e/analyzer/video/default_video_quality_analyzer.cc b/test/pc/e2e/analyzer/video/default_video_quality_analyzer.cc
index 8cf9e7a011..81231d71c7 100644
--- a/test/pc/e2e/analyzer/video/default_video_quality_analyzer.cc
+++ b/test/pc/e2e/analyzer/video/default_video_quality_analyzer.cc
@@ -52,21 +52,6 @@ void LogFrameCounters(const std::string& name, const FrameCounters& counters) {
   RTC_LOG(LS_INFO) << "[" << name << "] Dropped     : " << counters.dropped;
 }
 
-absl::string_view ToString(FrameDropPhase phase) {
-  switch (phase) {
-    case FrameDropPhase::kBeforeEncoder:
-      return "kBeforeEncoder";
-    case FrameDropPhase::kByEncoder:
-      return "kByEncoder";
-    case FrameDropPhase::kTransport:
-      return "kTransport";
-    case FrameDropPhase::kAfterDecoder:
-      return "kAfterDecoder";
-    case FrameDropPhase::kLastValue:
-      RTC_CHECK(false) << "FrameDropPhase::kLastValue mustn't be used";
-  }
-}
-
 void LogStreamInternalStats(const std::string& name,
                             const StreamStats& stats,
                             Timestamp start_time) {
diff --git a/test/pc/e2e/analyzer/video/default_video_quality_analyzer_shared_objects.cc b/test/pc/e2e/analyzer/video/default_video_quality_analyzer_shared_objects.cc
index cc17429072..732ec217b8 100644
--- a/test/pc/e2e/analyzer/video/default_video_quality_analyzer_shared_objects.cc
+++ b/test/pc/e2e/analyzer/video/default_video_quality_analyzer_shared_objects.cc
@@ -11,6 +11,8 @@
 
 #include <algorithm>
 #include <iterator>
+#include <ostream>
+#include <string>
 
 #include "api/units/timestamp.h"
 #include "rtc_base/checks.h"
@@ -23,6 +25,46 @@ constexpr int kMicrosPerSecond = 1000000;
 
 }  // namespace
 
+std::string StreamCodecInfo::ToString() const {
+  rtc::StringBuilder out;
+  out << "{codec_name=" << codec_name << "; first_frame_id=" << first_frame_id
+      << "; last_frame_id=" << last_frame_id
+      << "; switched_on_at=" << webrtc::ToString(switched_on_at)
+      << "; switched_from_at=" << webrtc::ToString(switched_from_at) << " }";
+  return out.str();
+}
+
+std::ostream& operator<<(std::ostream& os, const StreamCodecInfo& state) {
+  return os << state.ToString();
+}
+
+rtc::StringBuilder& operator<<(rtc::StringBuilder& sb,
+                               const StreamCodecInfo& state) {
+  return sb << state.ToString();
+}
+
+std::string ToString(FrameDropPhase phase) {
+  switch (phase) {
+    case FrameDropPhase::kBeforeEncoder:
+      return "kBeforeEncoder";
+    case FrameDropPhase::kByEncoder:
+      return "kByEncoder";
+    case FrameDropPhase::kTransport:
+      return "kTransport";
+    case FrameDropPhase::kAfterDecoder:
+      return "kAfterDecoder";
+    case FrameDropPhase::kLastValue:
+      return "kLastValue";
+  }
+}
+
+std::ostream& operator<<(std::ostream& os, FrameDropPhase phase) {
+  return os << ToString(phase);
+}
+rtc::StringBuilder& operator<<(rtc::StringBuilder& sb, FrameDropPhase phase) {
+  return sb << ToString(phase);
+}
+
 void SamplesRateCounter::AddEvent(Timestamp event_time) {
   if (event_first_time_.IsMinusInfinity()) {
     event_first_time_ = event_time;
diff --git a/test/pc/e2e/analyzer/video/default_video_quality_analyzer_shared_objects.h b/test/pc/e2e/analyzer/video/default_video_quality_analyzer_shared_objects.h
index 8f0afd36f7..3b2897bf9d 100644
--- a/test/pc/e2e/analyzer/video/default_video_quality_analyzer_shared_objects.h
+++ b/test/pc/e2e/analyzer/video/default_video_quality_analyzer_shared_objects.h
@@ -13,6 +13,7 @@
 
 #include <map>
 #include <memory>
+#include <ostream>
 #include <set>
 #include <string>
 #include <utility>
@@ -21,6 +22,7 @@
 #include "absl/types/optional.h"
 #include "api/numerics/samples_stats_counter.h"
 #include "api/units/timestamp.h"
+#include "rtc_base/strings/string_builder.h"
 
 namespace webrtc {
 
@@ -77,8 +79,14 @@ struct StreamCodecInfo {
   Timestamp switched_on_at = Timestamp::PlusInfinity();
   // Timestamp when this codec was used last time.
   Timestamp switched_from_at = Timestamp::PlusInfinity();
+
+  std::string ToString() const;
 };
 
+std::ostream& operator<<(std::ostream& os, const StreamCodecInfo& state);
+rtc::StringBuilder& operator<<(rtc::StringBuilder& sb,
+                               const StreamCodecInfo& state);
+
 // Represents phases where video frame can be dropped and such drop will be
 // detected by analyzer.
 enum class FrameDropPhase : int {
@@ -90,6 +98,10 @@ enum class FrameDropPhase : int {
   kLastValue
 };
 
+std::string ToString(FrameDropPhase phase);
+std::ostream& operator<<(std::ostream& os, FrameDropPhase phase);
+rtc::StringBuilder& operator<<(rtc::StringBuilder& sb, FrameDropPhase phase);
+
 struct StreamStats {
   explicit StreamStats(Timestamp stream_started_time);