Fixed Bug when switching from video media

Fixed an issue where the QVideoWidget was hidden when switching away from a video but never shown again when switching back to anyone.

ArtNet/gui/window.py

@@ -544,6 +544,9 @@ class Window(QtWidgets.QMainWindow):
             self.__pixmap.frameChanged.connect(self.on_movie_frame_changed)
         elif file_ending in ["webm", "mp4", "mov", "mkv"]:
             self.__showing_video = True
+            if isinstance(self.__video, QVideoWidget):
+                self.__video.show()
+            else:
                 self.__video = QVideoWidget() if self.__video is None else self.__video
             self.__player = QtMultimedia.QMediaPlayer(None, QtMultimedia.QMediaPlayer.VideoSurface)
             self.__player.setVideoOutput(self.__video)