Fix decoder input path when using tbc directly

src/tbc_video_export/process/wrapper/wrapper_group.py

@@ -141,7 +141,7 @@ def _create_decoder_wrappers(self) -> None:
                             tbc_type,
                             ProcessName.LD_CHROMA_DECODER,
                             PipeFactory.create_dummy_pipe(
-                                self._state.file_helper.tbc_luma
+                                self._state.file_helper.tbcs[tbc_type]
                             ),
                         )
                     )