Add _stream_time and skip() to CIDVideoSource

tasks/streaming.py

@@ -139,6 +139,15 @@ class CIDVideoSource:
         self._ensure_source()
         return self._source.path
 
+    @property
+    def _stream_time(self):
+        self._ensure_source()
+        return self._source._stream_time
+
+    def skip(self):
+        self._ensure_source()
+        return self._source.skip()
+
     def close(self):
         if self._source:
             self._source.close()