videosequence: return an empty frame if no preroll available

rjw57 · Apr 2, 2016 · a8e64c5 · a8e64c5
1 parent 497aa70
commit a8e64c5
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/videosequence/__init__.py b/videosequence/__init__.py
@@ -137,6 +137,9 @@ def _get_frame(self, index):
         assert self.current_index == index
 
         sample = self.appsink.pull_preroll()
+        if sample is None:
+            LOG.warn("Returning empty frame since no preroll available")
+            return Image.new("RGB", (self.width, self.height))
         return _sample_to_image(sample)
 
     def _get_slice(self, slc):