diff --git a/extension/content-script.js b/extension/content-script.js
--- a/extension/content-script.js
+++ b/extension/content-script.js
@@ -231,6 +231,7 @@
     // a website might have set Media Sessions metadata prior to playing
     // and then we would have ignored the metadata signal because there was no player
     sendMessage("mpris", "playing", {
+        mediaSrc: player.src,
         duration: player.duration,
         currentTime: player.currentTime,
         playbackRate: player.playbackRate,
diff --git a/host/mprisplugin.h b/host/mprisplugin.h
--- a/host/mprisplugin.h
+++ b/host/mprisplugin.h
@@ -150,6 +150,7 @@
 
     QString m_pageTitle;
     QUrl m_url;
+    QUrl m_mediaSrc;
 
     QString m_title;
     QString m_artist;
diff --git a/host/mprisplugin.cpp b/host/mprisplugin.cpp
--- a/host/mprisplugin.cpp
+++ b/host/mprisplugin.cpp
@@ -130,6 +130,7 @@
         m_canGoPrevious = false;
         m_pageTitle.clear();
         m_url.clear();
+        m_mediaSrc.clear();
         m_title.clear();
         m_artist.clear();
         m_artworkUrl.clear();
@@ -140,6 +141,7 @@
         setPlaybackStatus(QStringLiteral("Playing"));
         m_pageTitle = data.value(QStringLiteral("tabTitle")).toString();
         m_url = QUrl(data.value(QStringLiteral("url")).toString());
+        m_mediaSrc = QUrl(data.value(QStringLiteral("mediaSrc")).toString());
 
         const qreal volume = data.value(QStringLiteral("volume")).toDouble(1);
         if (m_volume != volume) {
@@ -384,6 +386,9 @@
     if (m_url.isValid()) {
         metadata.insert(QStringLiteral("xesam:url"), m_url.toDisplayString());
     }
+    if (m_mediaSrc.isValid()) {
+        metadata.insert(QStringLiteral("kde:mediaSrc"), m_mediaSrc.toDisplayString());
+    }
     if (m_length > 0) {
         metadata.insert(QStringLiteral("mpris:length"), m_length);
     }