small fix

Former-commit-id: 9c51a989e2c42774a4f1f5b81bc5391f55adead6

pipeline.py

@@ -22,7 +22,7 @@ parser.add_argument("-v", help="auto encode script with video", action='store_tr
 args = parser.parse_args()
 
 # input should be either video file or youtube video link.
-if args.link is None and args.video_file is None and args.srt_file is None:
+if args.link is None and args.video_file is None and args.srt_file is None and args.audio_file is None:
     print("need video source or srt file")
     exit()
 
@@ -49,6 +49,8 @@ if args.video_name == 'placeholder' :
         VIDEO_NAME = args.srt_file.split('/')[-1].split('.')[0]
     else:
         VIDEO_NAME = args.video_name
+else:
+    VIDEO_NAME = args.video_name
 
 model_name = args.model_name
 
@@ -87,7 +89,8 @@ if args.link is not None and args.video_file is None:
 elif args.video_file is not None:
     # Read from local
     video_path = args.video_file
-    if args.audio_file is not None:
+    audio_path = "{DOWNLOAD_PATH}/audio/{VIDEO_NAME}.mp3".format(DOWNLOAD_PATH, VIDEO_NAME)
+    if args.audio_file is not None or os.path.exists(audio_path):
         audio_file= open(args.audio_file, "rb")
         audio_path = args.audio_file
     else: