Update app.py

app.py

@@ -12,6 +12,23 @@ subprocess.run([sys.executable, "-m", "pip", "install", "xformers==0.0.32.post2"
 # Install video preprocessing dependencies (pose/canny/depth extraction)
 subprocess.run([sys.executable, "-m", "pip", "install", "controlnet_aux", "imageio[ffmpeg]"], check=False)
 
+# Reinstall torchaudio to match the torch CUDA version on this space.
+# controlnet_aux or other deps can pull in a CPU-only torchaudio that conflicts
+# with the pre-installed CUDA torch, causing "undefined symbol" errors.
+_tv = subprocess.run([sys.executable, "-c", "import torch; print(torch.__version__)"],
+                     capture_output=True, text=True)
+if _tv.returncode == 0:
+    _full_ver = _tv.stdout.strip()
+    # Extract CUDA suffix if present (e.g. "2.7.0+cu124" -> "cu124")
+    _cuda_suffix = _full_ver.split("+")[-1] if "+" in _full_ver else "cu124"
+    _base_ver = _full_ver.split("+")[0]
+    print(f"Detected torch {_full_ver}, reinstalling matching torchaudio...")
+    subprocess.run([
+        sys.executable, "-m", "pip", "install", "--force-reinstall", "--no-deps",
+        f"torchaudio=={_base_ver}",
+        "--index-url", f"https://download.pytorch.org/whl/{_cuda_suffix}",
+    ], check=False)
+
 # Clone LTX-2 repo and install packages
 LTX_REPO_URL = "https://github.com/Lightricks/LTX-2.git"
 LTX_REPO_DIR = os.path.join(os.path.dirname(os.path.abspath(__file__)), "LTX-2")