A new strange behavior of this util. When downloading a format of the file that is pure video (i.e. no audio) I end up with tens of small files each one labeled by the name of the listed movie appended with .part-FragN where N ranges from 0 to more than 200 sometimes. I updated youtube-dl by running youtube-dl -U and retried. It does the same thing. After it finished getting all the fragments, it does not catenate them into a single video file. How can I get around this problem? Thanx!!