fix indexing bug

OpenshotService/openshot_video_generator.py

@@ -244,7 +244,7 @@ def parse_script(file_path,gt_list):
     for idx in range(int((len(lines)+1)/4)):
         script={}
         script['index'] = idx
-        time_raw = lines[idx * 4]
+        time_raw = lines[idx * 4 +1 ]
         script['content'] = lines[idx * 4 + 2]
         start = time_raw.split(' --> ')[0].split(':')
         stop = time_raw.split(' --> ')[1].split(':')