Implementing Custom Output File Naming for MDX, MDXC, and VR Models

audio_separator/separator/architectures/mdx_separator.py

@@ -132,13 +132,15 @@ def load_model(self):
             self.model_run.to(self.torch_device).eval()
             self.logger.warning("Model converted from onnx to pytorch due to segment size not matching dim_t, processing may be slower.")
 
-    def separate(self, audio_file_path):
+    def separate(self, audio_file_path, primary_output_name=None, secondary_output_name=None):
         """
         Separates the audio file into primary and secondary sources based on the model's configuration.
         It processes the mix, demixes it into sources, normalizes the sources, and saves the output files.
 
         Args:
             audio_file_path (str): The path to the audio file to be processed.
+            primary_output_name (str, optional): Custom name for the primary output file. Defaults to None.
+            secondary_output_name (str, optional): Custom name for the secondary output file. Defaults to None.
 
         Returns:
             list: A list of paths to the output files generated by the separation process.
@@ -182,15 +184,22 @@ def separate(self, audio_file_path):
 
         # Save and process the secondary stem if needed
         if not self.output_single_stem or self.output_single_stem.lower() == self.secondary_stem_name.lower():
-            self.secondary_stem_output_path = os.path.join(f"{self.audio_file_base}_({self.secondary_stem_name})_{self.model_name}.{self.output_format.lower()}")
+            if secondary_output_name:
+                self.secondary_stem_output_path = os.path.join(f"{secondary_output_name}.{self.output_format.lower()}")
+            else:
+                self.secondary_stem_output_path = os.path.join(f"{self.audio_file_base}_({self.secondary_stem_name})_{self.model_name}.{self.output_format.lower()}")
 
             self.logger.info(f"Saving {self.secondary_stem_name} stem to {self.secondary_stem_output_path}...")
             self.final_process(self.secondary_stem_output_path, self.secondary_source, self.secondary_stem_name)
             output_files.append(self.secondary_stem_output_path)
 
         # Save and process the primary stem if needed
         if not self.output_single_stem or self.output_single_stem.lower() == self.primary_stem_name.lower():
-            self.primary_stem_output_path = os.path.join(f"{self.audio_file_base}_({self.primary_stem_name})_{self.model_name}.{self.output_format.lower()}")
+            if primary_output_name:
+                self.primary_stem_output_path = os.path.join(f"{primary_output_name}.{self.output_format.lower()}")
+            else:
+                self.primary_stem_output_path = os.path.join(f"{self.audio_file_base}_({self.primary_stem_name})_{self.model_name}.{self.output_format.lower()}")
+
             if not isinstance(self.primary_source, np.ndarray):
                 self.primary_source = source.T
 

audio_separator/separator/architectures/mdxc_separator.py

@@ -111,13 +111,15 @@ def load_model(self):
             self.logger.error(f"Please try deleting the model file from {self.model_path} and run audio-separator again to re-download it.")
             sys.exit(1)
 
-    def separate(self, audio_file_path):
+    def separate(self, audio_file_path, primary_output_name=None, secondary_output_name=None):
         """
         Separates the audio file into primary and secondary sources based on the model's configuration.
         It processes the mix, demixes it into sources, normalizes the sources, and saves the output files.
 
         Args:
             audio_file_path (str): The path to the audio file to be processed.
+            primary_output_name (str, optional): Custom name for the primary output file. Defaults to None.
+            secondary_output_name (str, optional): Custom name for the secondary output file. Defaults to None.
 
         Returns:
             list: A list of paths to the output files generated by the separation process.
@@ -152,14 +154,20 @@ def separate(self, audio_file_path):
                 self.secondary_source = spec_utils.normalize(wave=source[self.secondary_stem_name], max_peak=self.normalization_threshold, min_peak=self.amplification_threshold).T
 
             if not self.output_single_stem or self.output_single_stem.lower() == self.secondary_stem_name.lower():
-                self.secondary_stem_output_path = os.path.join(f"{self.audio_file_base}_({self.secondary_stem_name})_{self.model_name}.{self.output_format.lower()}")
+                if secondary_output_name:
+                    self.secondary_stem_output_path = os.path.join(f"{secondary_output_name}.{self.output_format.lower()}")
+                else:
+                    self.secondary_stem_output_path = os.path.join(f"{self.audio_file_base}_({self.secondary_stem_name})_{self.model_name}.{self.output_format.lower()}")
 
                 self.logger.info(f"Saving {self.secondary_stem_name} stem to {self.secondary_stem_output_path}...")
                 self.final_process(self.secondary_stem_output_path, self.secondary_source, self.secondary_stem_name)
                 output_files.append(self.secondary_stem_output_path)
 
         if not isinstance(source, dict) or not self.output_single_stem or self.output_single_stem.lower() == self.primary_stem_name.lower():
-            self.primary_stem_output_path = os.path.join(f"{self.audio_file_base}_({self.primary_stem_name})_{self.model_name}.{self.output_format.lower()}")
+            if primary_output_name:
+                self.primary_stem_output_path = os.path.join(f"{primary_output_name}.{self.output_format.lower()}")
+            else:
+                self.primary_stem_output_path = os.path.join(f"{self.audio_file_base}_({self.primary_stem_name})_{self.model_name}.{self.output_format.lower()}")
 
             if not isinstance(self.primary_source, np.ndarray):
                 self.primary_source = source.T

audio_separator/separator/architectures/vr_separator.py

@@ -110,13 +110,15 @@ def __init__(self, common_config, arch_config: dict):
 
         self.logger.info("VR Separator initialisation complete")
 
-    def separate(self, audio_file_path):
+    def separate(self, audio_file_path, primary_output_name=None, secondary_output_name=None):
         """
         Separates the audio file into primary and secondary sources based on the model's configuration.
         It processes the mix, demixes it into sources, normalizes the sources, and saves the output files.
 
         Args:
             audio_file_path (str): The path to the audio file to be processed.
+            primary_output_name (str, optional): Custom name for the primary output file. Defaults to None.
+            secondary_output_name (str, optional): Custom name for the secondary output file. Defaults to None.
 
         Returns:
             list: A list of paths to the output files generated by the separation process.
@@ -195,7 +197,10 @@ def separate(self, audio_file_path):
                     self.primary_source = librosa.resample(self.primary_source.T, orig_sr=self.model_samplerate, target_sr=44100).T
                     self.logger.debug("Resampling primary source to 44100Hz.")
 
-            self.primary_stem_output_path = os.path.join(f"{self.audio_file_base}_({self.primary_stem_name})_{self.model_name}.{self.output_format.lower()}")
+            if primary_output_name:
+                self.primary_stem_output_path = os.path.join(f"{primary_output_name}.{self.output_format.lower()}")
+            else:
+                self.primary_stem_output_path = os.path.join(f"{self.audio_file_base}_({self.primary_stem_name})_{self.model_name}.{self.output_format.lower()}")
 
             self.logger.info(f"Saving {self.primary_stem_name} stem to {self.primary_stem_output_path}...")
             self.final_process(self.primary_stem_output_path, self.primary_source, self.primary_stem_name)
@@ -213,7 +218,10 @@ def separate(self, audio_file_path):
                     self.secondary_source = librosa.resample(self.secondary_source.T, orig_sr=self.model_samplerate, target_sr=44100).T
                     self.logger.debug("Resampling secondary source to 44100Hz.")
 
-            self.secondary_stem_output_path = os.path.join(f"{self.audio_file_base}_({self.secondary_stem_name})_{self.model_name}.{self.output_format.lower()}")
+            if secondary_output_name:
+                self.secondary_stem_output_path = os.path.join(f"{secondary_output_name}.{self.output_format.lower()}")
+            else:
+                self.secondary_stem_output_path = os.path.join(f"{self.audio_file_base}_({self.secondary_stem_name})_{self.model_name}.{self.output_format.lower()}")
 
             self.logger.info(f"Saving {self.secondary_stem_name} stem to {self.secondary_stem_output_path}...")
             self.final_process(self.secondary_stem_output_path, self.secondary_source, self.secondary_stem_name)

audio_separator/separator/separator.py

@@ -737,7 +737,7 @@ def load_model(self, model_filename="model_mel_band_roformer_ep_3005_sdr_11.4360
         self.logger.debug("Loading model completed.")
         self.logger.info(f'Load model duration: {time.strftime("%H:%M:%S", time.gmtime(int(time.perf_counter() - load_model_start_time)))}')
 
-    def separate(self, audio_file_path):
+    def separate(self, audio_file_path, primary_output_name=None, secondary_output_name=None):
         """
         Separates the audio file into different stems (e.g., vocals, instruments) using the loaded model.
 
@@ -747,6 +747,8 @@ def separate(self, audio_file_path):
 
         Parameters:
         - audio_file_path (str): The path to the audio file to be separated.
+        - primary_output_name (str, optional): Custom name for the primary output file. Defaults to None.
+        - secondary_output_name (str, optional): Custom name for the secondary output file. Defaults to None.
 
         Returns:
         - output_files (list of str): A list containing the paths to the separated audio stem files.
@@ -766,10 +768,10 @@ def separate(self, audio_file_path):
         if self.use_autocast and autocast_mode.is_autocast_available(self.torch_device.type):
             self.logger.debug("Autocast available.")
             with autocast_mode.autocast(self.torch_device.type):
-                output_files = self.model_instance.separate(audio_file_path)
+                output_files = self.model_instance.separate(audio_file_path, primary_output_name, secondary_output_name)
         else:
             self.logger.debug("Autocast unavailable.")
-            output_files = self.model_instance.separate(audio_file_path)
+            output_files = self.model_instance.separate(audio_file_path, primary_output_name, secondary_output_name)
 
         # Clear GPU cache to free up memory
         self.model_instance.clear_gpu_cache()

audio_separator/utils/cli.py

@@ -56,6 +56,8 @@ def main():
     sample_rate_help = "modify the sample rate of the output audio (default: %(default)s). Example: --sample_rate=44100"
     use_soundfile_help = "Use soundfile to write audio output (default: %(default)s). Example: --use_soundfile"
     use_autocast_help = "use PyTorch autocast for faster inference (default: %(default)s). Do not use for CPU inference. Example: --use_autocast"
+    primary_output_name_help = "Custom name for the primary output file (default: %(default)s). Example: --primary_output_name=custom_primary_output"
+    secondary_output_name_help = "Custom name for the secondary output file (default: %(default)s). Example: --secondary_output_name=custom_secondary_output"
 
     common_params = parser.add_argument_group("Common Separation Parameters")
     common_params.add_argument("--invert_spect", action="store_true", help=invert_spect_help)
@@ -65,6 +67,8 @@ def main():
     common_params.add_argument("--sample_rate", type=int, default=44100, help=sample_rate_help)
     common_params.add_argument("--use_soundfile", action="store_true", help=use_soundfile_help)
     common_params.add_argument("--use_autocast", action="store_true", help=use_autocast_help)
+    common_params.add_argument("--primary_output_name", default=None, help=primary_output_name_help)
+    common_params.add_argument("--secondary_output_name", default=None, help=secondary_output_name_help)
 
     mdx_segment_size_help = "larger consumes more resources, but may give better results (default: %(default)s). Example: --mdx_segment_size=256"
     mdx_overlap_help = "amount of overlap between prediction windows, 0.001-0.999. higher is better but slower (default: %(default)s). Example: --mdx_overlap=0.25"
@@ -201,6 +205,6 @@ def main():
     separator.load_model(model_filename=args.model_filename)
 
     for audio_file in args.audio_files:
-        output_files = separator.separate(audio_file)
+        output_files = separator.separate(audio_file, primary_output_name=args.primary_output_name, secondary_output_name=args.secondary_output_name)
 
         logger.info(f"Separation complete! Output file(s): {' '.join(output_files)}")

tests/unit/test_cli.py

@@ -224,6 +224,7 @@ def test_cli_invert_spectrogram_argument(common_expected_args):
             # Assertions
             mock_separator.assert_called_once_with(**expected_args)
 
+
 # Test using use_autocast argument
 def test_cli_use_autocast_argument(common_expected_args):
     test_args = ["cli.py", "test_audio.mp3", "--use_autocast"]
@@ -240,6 +241,7 @@ def test_cli_use_autocast_argument(common_expected_args):
             # Assertions
             mock_separator.assert_called_once_with(**common_expected_args)
 
+
 # Test using use_autocast argument
 def test_cli_use_autocast_argument(common_expected_args):
     test_args = ["cli.py", "test_audio.mp3", "--use_autocast"]
@@ -254,3 +256,45 @@ def test_cli_use_autocast_argument(common_expected_args):
 
             # Assertions
             mock_separator.assert_called_once_with(**common_expected_args)
+
+
+# Test using primary_output_name argument
+def test_cli_primary_output_name_argument(common_expected_args):
+    test_args = ["cli.py", "test_audio.mp3", "--primary_output_name=custom_primary_output"]
+    with patch("sys.argv", test_args):
+        with patch("audio_separator.separator.Separator") as mock_separator:
+            mock_separator_instance = mock_separator.return_value
+            mock_separator_instance.separate.return_value = ["output_file.mp3"]
+            main()
+
+            # Assertions
+            mock_separator.assert_called_once_with(**common_expected_args)
+            mock_separator_instance.separate.assert_called_once_with("test_audio.mp3", primary_output_name="custom_primary_output", secondary_output_name=None)
+
+
+# Test using secondary_output_name argument
+def test_cli_secondary_output_name_argument(common_expected_args):
+    test_args = ["cli.py", "test_audio.mp3", "--secondary_output_name=custom_secondary_output"]
+    with patch("sys.argv", test_args):
+        with patch("audio_separator.separator.Separator") as mock_separator:
+            mock_separator_instance = mock_separator.return_value
+            mock_separator_instance.separate.return_value = ["output_file.mp3"]
+            main()
+
+            # Assertions
+            mock_separator.assert_called_once_with(**common_expected_args)
+            mock_separator_instance.separate.assert_called_once_with("test_audio.mp3", primary_output_name=None, secondary_output_name="custom_secondary_output")
+
+
+# Test using both primary_output_name and secondary_output_name arguments
+def test_cli_both_output_names_argument(common_expected_args):
+    test_args = ["cli.py", "test_audio.mp3", "--primary_output_name=custom_primary_output", "--secondary_output_name=custom_secondary_output"]
+    with patch("sys.argv", test_args):
+        with patch("audio_separator.separator.Separator") as mock_separator:
+            mock_separator_instance = mock_separator.return_value
+            mock_separator_instance.separate.return_value = ["output_file.mp3"]
+            main()
+
+            # Assertions
+            mock_separator.assert_called_once_with(**common_expected_args)
+            mock_separator_instance.separate.assert_called_once_with("test_audio.mp3", primary_output_name="custom_primary_output", secondary_output_name="custom_secondary_output")