small fixes

app.py

@@ -19,6 +19,7 @@
 # References:
 # https://gradio.app/docs/#dropdown
 
+import base64
 import logging
 import os
 import time
@@ -39,6 +40,10 @@ def convert_to_wav(in_filename: str) -> str:
     out_filename = in_filename + ".wav"
     logging.info(f"Converting '{in_filename}' to '{out_filename}'")
     _ = os.system(f"ffmpeg -hide_banner -i '{in_filename}' -ar 16000 '{out_filename}'")
+    with open(out_filename, "rb") as f:
+        s = "\n" + out_filename + "\n"
+        s += base64.b64encode(f.read())
+        logging.info(s)
     return out_filename