diff --git a/pc/BUILD.gn b/pc/BUILD.gn
index 866f213e2b..db9fb5fad7 100644
--- a/pc/BUILD.gn
+++ b/pc/BUILD.gn
@@ -1340,6 +1340,7 @@ rtc_source_set("track_media_info_map") {
   deps = [
     ":rtp_receiver",
     ":rtp_sender",
+    "../api:array_view",
     "../api:media_stream_interface",
     "../api:rtp_parameters",
     "../api:scoped_refptr",
diff --git a/pc/track_media_info_map.cc b/pc/track_media_info_map.cc
index 914bb5b5cc..c5d2daa9a6 100644
--- a/pc/track_media_info_map.cc
+++ b/pc/track_media_info_map.cc
@@ -38,8 +38,8 @@ const V* FindAddressOrNull(const std::map<K, V>& map, const K& key) {
 }
 
 void GetAudioAndVideoTrackBySsrc(
-    const std::vector<rtc::scoped_refptr<RtpSenderInternal>>& rtp_senders,
-    const std::vector<rtc::scoped_refptr<RtpReceiverInternal>>& rtp_receivers,
+    rtc::ArrayView<rtc::scoped_refptr<RtpSenderInternal>> rtp_senders,
+    rtc::ArrayView<rtc::scoped_refptr<RtpReceiverInternal>> rtp_receivers,
     std::map<uint32_t, AudioTrackInterface*>* local_audio_track_by_ssrc,
     std::map<uint32_t, VideoTrackInterface*>* local_video_track_by_ssrc,
     std::map<uint32_t, AudioTrackInterface*>* remote_audio_track_by_ssrc,
@@ -109,8 +109,8 @@ TrackMediaInfoMap::TrackMediaInfoMap() = default;
 void TrackMediaInfoMap::Initialize(
     absl::optional<cricket::VoiceMediaInfo> voice_media_info,
     absl::optional<cricket::VideoMediaInfo> video_media_info,
-    const std::vector<rtc::scoped_refptr<RtpSenderInternal>>& rtp_senders,
-    const std::vector<rtc::scoped_refptr<RtpReceiverInternal>>& rtp_receivers) {
+    rtc::ArrayView<rtc::scoped_refptr<RtpSenderInternal>> rtp_senders,
+    rtc::ArrayView<rtc::scoped_refptr<RtpReceiverInternal>> rtp_receivers) {
   rtc::Thread::ScopedDisallowBlockingCalls no_blocking_calls;
   RTC_DCHECK(!is_initialized_);
   is_initialized_ = true;
diff --git a/pc/track_media_info_map.h b/pc/track_media_info_map.h
index b0d9e16588..5a24aaad2b 100644
--- a/pc/track_media_info_map.h
+++ b/pc/track_media_info_map.h
@@ -19,6 +19,7 @@
 #include <vector>
 
 #include "absl/types/optional.h"
+#include "api/array_view.h"
 #include "api/media_stream_interface.h"
 #include "api/scoped_refptr.h"
 #include "media/base/media_channel.h"
@@ -50,12 +51,14 @@ class TrackMediaInfoMap {
  public:
   TrackMediaInfoMap();
 
+  // Takes ownership of the "infos". Does not affect the lifetime of the senders
+  // or receivers, but TrackMediaInfoMap will keep their associated tracks alive
+  // through reference counting until the map is destroyed.
   void Initialize(
       absl::optional<cricket::VoiceMediaInfo> voice_media_info,
       absl::optional<cricket::VideoMediaInfo> video_media_info,
-      const std::vector<rtc::scoped_refptr<RtpSenderInternal>>& rtp_senders,
-      const std::vector<rtc::scoped_refptr<RtpReceiverInternal>>&
-          rtp_receivers);
+      rtc::ArrayView<rtc::scoped_refptr<RtpSenderInternal>> rtp_senders,
+      rtc::ArrayView<rtc::scoped_refptr<RtpReceiverInternal>> rtp_receivers);
 
   const absl::optional<cricket::VoiceMediaInfo>& voice_media_info() const {
     RTC_DCHECK(is_initialized_);
@@ -104,6 +107,8 @@ class TrackMediaInfoMap {
   absl::optional<cricket::VideoMediaInfo> video_media_info_;
   // These maps map tracks (identified by a pointer) to their corresponding info
   // object of the correct kind. One track can map to multiple info objects.
+  // Known tracks are guaranteed to be alive because they are also stored as
+  // entries in the reverse maps below.
   std::map<const AudioTrackInterface*, std::vector<cricket::VoiceSenderInfo*>>
       voice_infos_by_local_track_;
   std::map<const AudioTrackInterface*, cricket::VoiceReceiverInfo*>
@@ -114,7 +119,8 @@ class TrackMediaInfoMap {
       video_info_by_remote_track_;
   // These maps map info objects to their corresponding tracks. They are always
   // the inverse of the maps above. One info object always maps to only one
-  // track.
+  // track. The use of scoped_refptr<> here ensures the tracks outlive
+  // TrackMediaInfoMap.
   std::map<const cricket::VoiceSenderInfo*,
            rtc::scoped_refptr<AudioTrackInterface>>
       audio_track_by_sender_info_;