better debugging, add gpu info, fix ffmpeg bug with -y

voice_conversion/softvc/gpu_utils.py

@@ -0,0 +1,19 @@
+import sys
+import torch
+
+# TODO: De-duplicate this
+def print_gpu_info():
+    print('\n========================================')
+    print('Python interpreter', sys.executable)
+    print('PyTorch version', torch.__version__)
+    print('CUDA Available?', torch.cuda.is_available())
+    print('CUDA Device count', torch.cuda.device_count())
+    print('CUDA architectures library was compiled for', torch.cuda.get_arch_list())
+
+    #try:
+    #    from tensorflow.python.client import device_lib
+    #    print('local devices', str(device_lib.list_local_devices()).replace("\n", "\n  "))
+    #except ImportError:
+    #    print('no tensorflow - cannot list devices')
+    #    pass
+    print('========================================\n', flush=True)