              self._rename_tmp_file()
              return
  
          logger.info("Muxing Audio...")
          if self.frame_ranges is not None:
              logger.warning("Muxing audio is not currently supported for limited frame ranges."
                             "The output video has been created but you will need to mux audio "
                             "yourself")
              self._rename_tmp_file()
              return
 
</s> remove                 os.rename(self.video_tmp_file, self.video_file)
 </s> add                 os.rename(self._video_tmp_file, self._output_filename) </s> remove             A future fix could be implemented to mux audio with the frames """
 </s> add             # TODO A future fix could be implemented to mux audio with the frames """ </s> remove     def mux_audio(self):
        """ Mux audio
 </s> add  </s> remove         self.writer.close()
        self.mux_audio()
 </s> add         self._writer.close()
        self._mux_audio()

    def _mux_audio(self) -> None:
        """ Mux audio the audio to the generated video temp file. </s> remove     def set_frame_order(self, total_count):
        """ Return the full list of frames to be converted in order """
        if self.frame_ranges is None:
 </s> add     def _get_output_filename(self) -> str:
        """ Return full path to video output file.

        The filename is the same as the input video with `"_converted"` appended to the end. The
        file extension is as selected in the plugin settings. If a file already exists with the
        given filename, then `"_1"` is appended to the end of the filename. This number iterates
        until a valid filename that does not exist is found.

        Returns
        -------
        str
            The full path to the output video filename
        """
        filename = os.path.basename(self._source_video)
        filename = os.path.splitext(filename)[0]
        ext = self.config["container"]
        idx = 0
        while True:
            out_file = f"{filename}_converted{'' if idx == 0 else f'_{idx}'}.{ext}"
            retval = os.path.join(self.output_folder, out_file)
            if not os.path.exists(retval):
                break
            idx += 1
        logger.info("Outputting to: '%s'", retval)
        return retval

    def _set_frame_order(self, total_count: int) -> List[int]:
        """ Obtain the full list of frames to be converted in order.

        Parameters
        ----------
        total_count: int
            The total number of frames to be converted

        Returns
        -------
        list
            Full list of all frame indices to be converted
        """
        if self._frame_ranges is None:
        if self._frame_ranges is not None:
              self._rename_tmp_file()
              return
  
          logger.info("Muxing Audio...")
        if self._frame_ranges is not None:
              logger.warning("Muxing audio is not currently supported for limited frame ranges."
                             "The output video has been created but you will need to mux audio "
                             "yourself")
              self._rename_tmp_file()
              return
keep keep keep keep replace keep keep keep keep keep
 ffmpeg writer: Create new filename if output pre-exists 
plugins/convert/writer/ffmpeg.py