allow any delimiter for time values in srt files xx.yy.zz.zzz normalize to xx:yy:zz,zzz which is the most common

oxdbarchive/subtitles.py

@@ -61,6 +61,7 @@ def dict2srt(subtitles, encoding = "utf-8"):
 def time_str2msec(time_string):
   from datetime import datetime, timedelta
   import time
+  time_string = re.sub('(\d{2}).(\d{2}).(\d{2}).(\d{3})', '\\1:\\2:\\3,\\4', time_string)
   if len(time_string.split(',')) > 1:
     msec = float("0." + time_string.split(',')[-1])
   else: