diff --git a/api/test/video_quality_analyzer_interface.h b/api/test/video_quality_analyzer_interface.h
index f20ae3efc9..1ea59f731c 100644
--- a/api/test/video_quality_analyzer_interface.h
+++ b/api/test/video_quality_analyzer_interface.h
@@ -150,13 +150,15 @@ class VideoQualityAnalyzerInterface
   // call.
   virtual void UnregisterParticipantInCall(absl::string_view peer_name) {}
 
-  // Informs analyzer that peer `receiver_peer_name` shouldn't receive all
-  // streams from sender `sender_peer_name`.
+  // Informs analyzer that peer `receiver_peer_name` should not receive any
+  // stream from sender `sender_peer_name`.
+  // This method is a no-op if the sender or the receiver does not exist.
   virtual void OnPauseAllStreamsFrom(absl::string_view sender_peer_name,
                                      absl::string_view receiver_peer_name) {}
 
   // Informs analyzer that peer `receiver_peer_name` is expected to receive all
   // streams from `sender_peer_name`.
+  // This method is a no-op if the sender or the receiver does not exist.
   virtual void OnResumeAllStreamsFrom(absl::string_view sender_peer_name,
                                       absl::string_view receiver_peer_name) {}
 
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 ebd20b6c5e..d39a06878e 100644
--- a/test/pc/e2e/analyzer/video/default_video_quality_analyzer.cc
+++ b/test/pc/e2e/analyzer/video/default_video_quality_analyzer.cc
@@ -723,14 +723,14 @@ void DefaultVideoQualityAnalyzer::OnPauseAllStreamsFrom(
     absl::string_view sender_peer_name,
     absl::string_view receiver_peer_name) {
   MutexLock lock(&mutex_);
-  RTC_CHECK(peers_->HasName(sender_peer_name));
-  size_t sender_peer_index = peers_->index(sender_peer_name);
-  RTC_CHECK(peers_->HasName(receiver_peer_name));
-  size_t receiver_peer_index = peers_->index(receiver_peer_name);
-
-  for (auto& [unused, stream_state] : stream_states_) {
-    if (stream_state.sender() == sender_peer_index) {
-      stream_state.GetPausableState(receiver_peer_index)->Pause();
+  if (peers_->HasName(sender_peer_name) &&
+      peers_->HasName(receiver_peer_name)) {
+    size_t sender_peer_index = peers_->index(sender_peer_name);
+    size_t receiver_peer_index = peers_->index(receiver_peer_name);
+    for (auto& [unused, stream_state] : stream_states_) {
+      if (stream_state.sender() == sender_peer_index) {
+        stream_state.GetPausableState(receiver_peer_index)->Pause();
+      }
     }
   }
 }
@@ -739,14 +739,14 @@ void DefaultVideoQualityAnalyzer::OnResumeAllStreamsFrom(
     absl::string_view sender_peer_name,
     absl::string_view receiver_peer_name) {
   MutexLock lock(&mutex_);
-  RTC_CHECK(peers_->HasName(sender_peer_name));
-  size_t sender_peer_index = peers_->index(sender_peer_name);
-  RTC_CHECK(peers_->HasName(receiver_peer_name));
-  size_t receiver_peer_index = peers_->index(receiver_peer_name);
-
-  for (auto& [unused, stream_state] : stream_states_) {
-    if (stream_state.sender() == sender_peer_index) {
-      stream_state.GetPausableState(receiver_peer_index)->Resume();
+  if (peers_->HasName(sender_peer_name) &&
+      peers_->HasName(receiver_peer_name)) {
+    size_t sender_peer_index = peers_->index(sender_peer_name);
+    size_t receiver_peer_index = peers_->index(receiver_peer_name);
+    for (auto& [unused, stream_state] : stream_states_) {
+      if (stream_state.sender() == sender_peer_index) {
+        stream_state.GetPausableState(receiver_peer_index)->Resume();
+      }
     }
   }
 }