1 files changed, 13 insertions, 0 deletions
diff --git a/source/blender/sequencer/intern/strip_relations.c b/source/blender/sequencer/intern/strip_relations.c
index 4acf2763ce5..a123212cb6e 100644
--- a/source/blender/sequencer/intern/strip_relations.c
+++ b/source/blender/sequencer/intern/strip_relations.c
@@ -457,3 +457,16 @@ struct Sequence *SEQ_find_metastrip_by_sequence(ListBase *seqbase, Sequence *met
 
   return NULL;
 }
+
+bool SEQ_exists_in_seqbase(const Sequence *seq, const ListBase *seqbase)
+{
+  LISTBASE_FOREACH (Sequence *, seq_test, seqbase) {
+    if (seq_test->type == SEQ_TYPE_META && SEQ_exists_in_seqbase(seq, &seq_test->seqbase)) {
+      return true;
+    }
+    if (seq_test == seq) {
+      return true;
+    }
+  }
+  return false;
+}