try makinh mp4 copatible

app.py

@@ -39,11 +39,18 @@ def get_cached_model(model_name: str):
 # Separation Logic (all stems)
 def separate_all_stems(audio_file_path: str, model_name: str):
     model = get_cached_model(model_name)
-    waveform, sr = torchaudio.load(audio_file_path)
-    is_mono = waveform.shape[0] == 1
-    if is_mono:
-        waveform = waveform.repeat(2, 1)
-
+    #waveform, sr = torchaudio.load(audio_file_path)
+    #is_mono = waveform.shape[0] == 1
+    #if is_mono:
+        #waveform = waveform.repeat(2, 1)
+        
+    signal = AudioSignal(audio_file_path)
+    signal = signal.resample(44100)  # expects 44.1kHz
+    if signal.num_channels == 1:
+        signal = signal.convert_to(stereo=True)
+
+    waveform = torch.tensor(signal.audio_data).to(torch.float32)
+    sr = signal.sample_rate
     with torch.no_grad():
         stems_batch = apply_model(
             model,