fix: remove torchcodec, add ffmpeg system pkg, monkey-patch torchaudio to use soundfile backend

app.py

@@ -3,6 +3,29 @@ import gradio as gr
 import torch
 import librosa
 import numpy as np
+
+# Patch torchaudio to use soundfile backend globally.
+# PyTorch 2.9+ defaults to torchcodec which requires FFmpeg shared libs
+# that are incompatible with the HF Space environment.
+import torchaudio
+
+_orig_torchaudio_load = torchaudio.load
+_orig_torchaudio_info = torchaudio.info
+
+
+def _patched_load(*args, **kwargs):
+    kwargs.setdefault("backend", "soundfile")
+    return _orig_torchaudio_load(*args, **kwargs)
+
+
+def _patched_info(*args, **kwargs):
+    kwargs.setdefault("backend", "soundfile")
+    return _orig_torchaudio_info(*args, **kwargs)
+
+
+torchaudio.load = _patched_load
+torchaudio.info = _patched_info
+
 from inference import inference
 from huggingface_hub import hf_hub_download
 from pathlib import Path

packages.txt

@@ -0,0 +1,2 @@
+ffmpeg
+libsndfile1-dev

requirements.txt

@@ -2,7 +2,6 @@ https://github.com/CPJKU/beat_this/archive/main.zip
 gradio>=4.0.0
 torch>=2.0.0
 torchaudio>=2.0.0
-torchcodec
 pytorch-lightning>=2.0.0
 transformers>=4.46.0
 huggingface_hub>=0.25.0,<1.0.0