1 files changed, 6 insertions, 3 deletions
diff --git a/demux/timeline.h b/demux/timeline.h
index faeec53b32..7bc7e9e053 100644
--- a/demux/timeline.h
+++ b/demux/timeline.h
@@ -2,6 +2,7 @@
 #define MP_TIMELINE_H_
 
 #include "common/common.h"
+#include "misc/bstr.h"
 
 // Single segment in a timeline.
 struct timeline_part {
@@ -24,9 +25,11 @@ struct timeline_par {
     bstr init_fragment;
     bool dash, no_clip, delay_open;
 
-    // If non-NULL, _some_ fields are used. If delay_open==true, this must be
-    // set, and the codec info is used.
-    struct sh_stream *sh_meta;
+    // Of any of these, _some_ fields are used. If delay_open==true, this
+    // describes each sub-track, and the codec info is used.
+    // In both cases, the metadata is mapped to actual tracks in specific ways.
+    struct sh_stream **sh_meta;
+    int num_sh_meta;
 
     // Segments to play, ordered by time.
     struct timeline_part *parts;