diff --git a/subprojects/gst-integration-testsuites/testsuites/validate/matroska/demux_flush_within_cluster.default/flow-expectations/log-fakesink0-sink-expected b/subprojects/gst-integration-testsuites/testsuites/validate/matroska/demux_flush_within_cluster.default/flow-expectations/log-fakesink0-sink-expected
index 9a4b892190..2b015f3a82 100644
--- a/subprojects/gst-integration-testsuites/testsuites/validate/matroska/demux_flush_within_cluster.default/flow-expectations/log-fakesink0-sink-expected
+++ b/subprojects/gst-integration-testsuites/testsuites/validate/matroska/demux_flush_within_cluster.default/flow-expectations/log-fakesink0-sink-expected
@@ -2,7 +2,7 @@ event stream-start: GstEventStreamStart, flags=(GstStreamFlags)GST_STREAM_FLAG_S
 event caps: video/x-vp9, framerate=(fraction)0/1, height=(int)240, width=(int)426;
 event segment: format=TIME, start=0:00:00.000000000, offset=0:00:00.000000000, stop=none, time=0:00:00.000000000, base=0:00:00.000000000, position=0:00:00.000000000, duration=0:02:15.469000000
 event tag: GstTagList-global, taglist=(taglist)"taglist\,\ container-format\=\(string\)Matroska\;";
-event tag: GstTagList-stream, taglist=(taglist)"taglist\,\ video-codec\=\(string\)\"On2\\\ VP9\"\;";
+event tag: GstTagList-stream, taglist=(taglist)"taglist\,\ video-codec\=\(string\)\"On2\\\ VP9\"\,\ container-specific-track-id\=\(string\)1\;";
 buffer: pts=0:00:00.000000000, flags=discont tag-memory
 buffer: pts=0:00:00.033000000, flags=delta-unit tag-memory
 buffer: pts=0:00:00.067000000, flags=delta-unit tag-memory
diff --git a/subprojects/gst-plugins-good/gst/matroska/matroska-demux.c b/subprojects/gst-plugins-good/gst/matroska/matroska-demux.c
index ee2699c8f0..41725e83a6 100644
--- a/subprojects/gst-plugins-good/gst/matroska/matroska-demux.c
+++ b/subprojects/gst-plugins-good/gst/matroska/matroska-demux.c
@@ -1596,6 +1596,15 @@ gst_matroska_demux_parse_stream (GstMatroskaDemux * demux, GstEbmlRead * ebml,
     context->tags_changed = TRUE;
   }
 
+  /* https://dev.w3.org/html5/html-sourcing-inband-tracks/#webm  */
+  if (context->num) {
+    gchar *track_id_str = g_strdup_printf ("%" G_GUINT64_FORMAT, context->num);
+    gst_tag_list_add (context->tags, GST_TAG_MERGE_REPLACE,
+        GST_TAG_CONTAINER_SPECIFIC_TRACK_ID, track_id_str, NULL);
+    g_free (track_id_str);
+    context->tags_changed = TRUE;
+  }
+
   if (caps == NULL) {
     GST_WARNING_OBJECT (demux, "could not determine caps for stream with "
         "codec_id='%s'", context->codec_id);