only call update_timeline once during first import, adds empty clips twice otherwise

pandora/archive/tasks.py

@@ -107,7 +107,7 @@ def process_stream(fileId):
         file = models.File.objects.get(id=fileId)
         file.encoding = False
         file.save()
-    file.item.update_selected()
+    file.item.update_selected(update_timeline=False)
     if not file.item.rendered:
         file.item.update_timeline()
     if file.item.rendered:

pandora/item/models.py

@@ -1164,7 +1164,7 @@ class Item(models.Model):
             qs = qs.exclude(id__in=wanted)
         qs.update(wanted=False)
 
-    def update_selected(self):
+    def update_selected(self, update_timeline=True):
         sets = self.sets()
         for s in sets:
             if s.filter(Q(is_video=True)|Q(is_audio=True)).filter(available=False).count() == 0:
@@ -1180,6 +1180,7 @@ class Item(models.Model):
                 if update:
                     self.rendered = False
                     self.save()
+                    if update_timeline:
                         tasks.update_timeline.delay(self.public_id)
                 break
         if not sets: