color conversion (version < 3)

python/ftl/ftlstream.py

@@ -234,7 +234,10 @@ class FTLStreamReader:
             raise NotImplementedError("non-color channel decoding not available")
         
         else:
-            self._frame = _ycrcb2rgb(img)
+            if self._version < 3:
+                self._frame = _ycrcb2rgb(img)
+            else:
+                self._frame = img
 
     def _decode_opencv(self, sp, p):
         try: