Update grpc-ffmpeg.py to run commands with quotes

Author: psych0d0g

server/grpc-ffmpeg.py

@@ -67,7 +67,7 @@ async def ExecuteCommand(self, request, context):
         tokens[0] = os.path.join(BINARY_PATH_PREFIX, tokens[0])
 
         # Reconstruct the command
-        command = shlex.join(tokens)
+        sanitized_command = shlex.join(tokens)
 
         process = await asyncio.create_subprocess_shell(
             command,
@@ -223,4 +223,4 @@ async def shutdown(signame):
 
 if __name__ == '__main__':
     handle_signals()
-    asyncio.run(ffmpeg_server())
+    asyncio.run(ffmpeg_server())